1ba2b2efdSGlen BarberNews for the tz database 2ba2b2efdSGlen Barber 3*d2cccdefSPhilip PaepsRelease 2025b - 2025-03-22 13:40:46 -0700 4*d2cccdefSPhilip Paeps 5*d2cccdefSPhilip Paeps Briefly: 6*d2cccdefSPhilip Paeps New zone for Aysén Region in Chile which moves from -04/-03 to -03. 7*d2cccdefSPhilip Paeps 8*d2cccdefSPhilip Paeps Changes to future timestamps 9*d2cccdefSPhilip Paeps 10*d2cccdefSPhilip Paeps Chile's Aysén Region moves from -04/-03 to -03 year-round, joining 11*d2cccdefSPhilip Paeps Magallanes Region. The region will not change its clocks on 12*d2cccdefSPhilip Paeps 2025-04-05 at 24:00, diverging from America/Santiago and creating a 13*d2cccdefSPhilip Paeps new zone America/Coyhaique. (Thanks to Yonathan Dossow.) Model 14*d2cccdefSPhilip Paeps this as a change to standard offset effective 2025-03-20. 15*d2cccdefSPhilip Paeps 16*d2cccdefSPhilip Paeps Changes to past timestamps 17*d2cccdefSPhilip Paeps 18*d2cccdefSPhilip Paeps Iran switched from +04 to +0330 on 1978-11-10 at 24:00, not at 19*d2cccdefSPhilip Paeps year end. (Thanks to Roozbeh Pournader.) 20*d2cccdefSPhilip Paeps 21*d2cccdefSPhilip Paeps Changes to code 22*d2cccdefSPhilip Paeps 23*d2cccdefSPhilip Paeps 'zic -l TIMEZONE -d . -l /some/other/file/system' no longer 24*d2cccdefSPhilip Paeps attempts to create an incorrect symlink, and no longer has a 25*d2cccdefSPhilip Paeps read buffer underflow. (Problem reported by Evgeniy Gorbanev.) 26*d2cccdefSPhilip Paeps 27*d2cccdefSPhilip Paeps 2846226b01SPhilip PaepsRelease 2025a - 2025-01-15 10:47:24 -0800 2946226b01SPhilip Paeps 3046226b01SPhilip Paeps Briefly: 31*d2cccdefSPhilip Paeps Paraguay adopted permanent -03 starting spring 2024. 3246226b01SPhilip Paeps Improve pre-1991 data for the Philippines. 3346226b01SPhilip Paeps Etc/Unknown is now reserved. 3446226b01SPhilip Paeps 3546226b01SPhilip Paeps Changes to future timestamps 3646226b01SPhilip Paeps 37*d2cccdefSPhilip Paeps Paraguay stopped changing its clocks after the spring-forward 3846226b01SPhilip Paeps transition on 2024-10-06, so it is now permanently at -03. 3946226b01SPhilip Paeps (Thanks to Heitor David Pinto and Even Scharning.) 4046226b01SPhilip Paeps This affects timestamps starting 2025-03-22, as well as the 4146226b01SPhilip Paeps obsolescent tm_isdst flags starting 2024-10-15. 4246226b01SPhilip Paeps 4346226b01SPhilip Paeps Changes to past timestamps 4446226b01SPhilip Paeps 4546226b01SPhilip Paeps Correct timestamps for the Philippines before 1900, and from 1937 4646226b01SPhilip Paeps through 1990. (Thanks to P Chan for the heads-up and citations.) 4746226b01SPhilip Paeps This includes adjusting local mean time before 1899; fixing 4846226b01SPhilip Paeps transitions in September 1899, January 1937, and June 1954; adding 4946226b01SPhilip Paeps transitions in December 1941, November 1945, March and September 5046226b01SPhilip Paeps 1977, and May and July 1990; and removing incorrect transitions in 5146226b01SPhilip Paeps March and September 1978. 5246226b01SPhilip Paeps 5346226b01SPhilip Paeps Changes to data 5446226b01SPhilip Paeps 5546226b01SPhilip Paeps Add zone1970.tab lines for the Concordia and Eyre Bird Observatory 5646226b01SPhilip Paeps research stations. (Thanks to Derick Rethans and Jule Dabars.) 5746226b01SPhilip Paeps 5846226b01SPhilip Paeps Changes to code 5946226b01SPhilip Paeps 6046226b01SPhilip Paeps strftime %s now generates the correct numeric string even when the 6146226b01SPhilip Paeps represented number does not fit into time_t. This is better than 6246226b01SPhilip Paeps generating the numeric equivalent of (time_t) -1, as strftime did 6346226b01SPhilip Paeps in TZDB releases 96a (when %s was introduced) through 2020a and in 6446226b01SPhilip Paeps releases 2022b through 2024b. It is also better than failing and 6546226b01SPhilip Paeps returning 0, as strftime did in releases 2020b through 2022a. 6646226b01SPhilip Paeps 6746226b01SPhilip Paeps strftime now outputs an invalid conversion specifier as-is, 6846226b01SPhilip Paeps instead of eliding the leading '%', which confused debugging. 6946226b01SPhilip Paeps 7046226b01SPhilip Paeps An invalid TZ now generates the time zone abbreviation "-00", not 7146226b01SPhilip Paeps "UTC", to help the user see that an error has occurred. (Thanks 7246226b01SPhilip Paeps to Arthur David Olson for suggesting a "wrong result".) 7346226b01SPhilip Paeps 7446226b01SPhilip Paeps mktime and timeoff no longer incorrectly fail merely because a 7546226b01SPhilip Paeps struct tm component near INT_MIN or INT_MAX overflows when a 7646226b01SPhilip Paeps lower-order component carries into it. 7746226b01SPhilip Paeps 7846226b01SPhilip Paeps TZNAME_MAXIMUM, the maximum number of bytes in a proleptic TZ 7946226b01SPhilip Paeps string's time zone abbreviation, now defaults to 254 not 255. 8046226b01SPhilip Paeps This helps reduce the size of internal state from 25480 to 21384 8146226b01SPhilip Paeps on common platforms. This change should not be a problem, as 8246226b01SPhilip Paeps nobody uses such long "abbreviations" and the longstanding tzcode 8346226b01SPhilip Paeps maximum was 16 until release 2023a. For those who prefer no 8446226b01SPhilip Paeps arbitrary limits, you can now specify TZNAME_MAXIMUM values up to 8546226b01SPhilip Paeps PTRDIFF_MAX, a limit forced by C anyway; formerly tzcode silently 8646226b01SPhilip Paeps misbehaved unless TZNAME_MAXIMUM was less than INT_MAX. 8746226b01SPhilip Paeps 8846226b01SPhilip Paeps tzset and related functions no longer leak a file descriptor if 8946226b01SPhilip Paeps another thread forks or execs at about the same time and if the 9046226b01SPhilip Paeps platform has O_CLOFORK and O_CLOEXEC respectively. Also, the 9146226b01SPhilip Paeps functions no longer let a TZif file become a controlling terminal. 9246226b01SPhilip Paeps 9346226b01SPhilip Paeps 'zdump -' now reads TZif data from /dev/stdin. 9446226b01SPhilip Paeps (From a question by Arthur David Olson.) 9546226b01SPhilip Paeps 9646226b01SPhilip Paeps Changes to documentation 9746226b01SPhilip Paeps 9846226b01SPhilip Paeps The name Etc/Unknown is now reserved: it will not be used by TZDB. 9946226b01SPhilip Paeps This is for compatibility with CLDR, which uses the string 10046226b01SPhilip Paeps "Etc/Unknown" for an unknown or invalid timezone. (Thanks to 10146226b01SPhilip Paeps Justin Grant, Mark Davis, and Guy Harris.) 10246226b01SPhilip Paeps 10346226b01SPhilip Paeps Cite Internet RFC 9636, which obsoletes RFC 8536 for TZif format. 10446226b01SPhilip Paeps 10546226b01SPhilip Paeps 106e273650fSPhilip PaepsRelease 2024b - 2024-09-04 12:27:47 -0700 107e273650fSPhilip Paeps 108e273650fSPhilip Paeps Briefly: 109e273650fSPhilip Paeps Improve historical data for Mexico, Mongolia, and Portugal. 110e273650fSPhilip Paeps System V names are now obsolescent. 111e273650fSPhilip Paeps The main data form now uses %z. 112e273650fSPhilip Paeps The code now conforms to RFC 8536 for early timestamps. 113e273650fSPhilip Paeps Support POSIX.1-2024, which removes asctime_r and ctime_r. 114e273650fSPhilip Paeps Assume POSIX.2-1992 or later for shell scripts. 115e273650fSPhilip Paeps SUPPORT_C89 now defaults to 1. 116e273650fSPhilip Paeps 117e273650fSPhilip Paeps Changes to past timestamps 118e273650fSPhilip Paeps 119e273650fSPhilip Paeps Asia/Choibalsan is now an alias for Asia/Ulaanbaatar rather than 120e273650fSPhilip Paeps being a separate Zone with differing behavior before April 2008. 121e273650fSPhilip Paeps This seems better given our wildly conflicting information about 122e273650fSPhilip Paeps Mongolia's time zone history. (Thanks to Heitor David Pinto.) 123e273650fSPhilip Paeps 124e273650fSPhilip Paeps Historical transitions for Mexico have been updated based on 125e273650fSPhilip Paeps official Mexican decrees. The affected timestamps occur during 126e273650fSPhilip Paeps the years 1921-1927, 1931, 1945, 1949-1970, and 1981-1997. 127e273650fSPhilip Paeps The affected zones are America/Bahia_Banderas, America/Cancun, 128e273650fSPhilip Paeps America/Chihuahua, America/Ciudad_Juarez, America/Hermosillo, 129e273650fSPhilip Paeps America/Mazatlan, America/Merida, America/Mexico_City, 130e273650fSPhilip Paeps America/Monterrey, America/Ojinaga, and America/Tijuana. 131e273650fSPhilip Paeps (Thanks to Heitor David Pinto.) 132e273650fSPhilip Paeps 133e273650fSPhilip Paeps Historical transitions for Portugal, represented by Europe/Lisbon, 134e273650fSPhilip Paeps Atlantic/Azores, and Atlantic/Madeira, have been updated based on a 135e273650fSPhilip Paeps close reading of old Portuguese legislation, replacing previous data 136e273650fSPhilip Paeps mainly originating from Whitman and Shanks & Pottenger. These 137e273650fSPhilip Paeps changes affect a few transitions in 1917-1921, 1924, and 1940 138e273650fSPhilip Paeps throughout these regions by a few hours or days, and various 139e273650fSPhilip Paeps timestamps between 1977 and 1993 depending on the region. In 140e273650fSPhilip Paeps particular, the Azores and Madeira did not observe DST from 1977 to 141e273650fSPhilip Paeps 1981. Additionally, the adoption of standard zonal time in former 142e273650fSPhilip Paeps Portuguese colonies have been adjusted: Africa/Maputo in 1909, and 143e273650fSPhilip Paeps Asia/Dili by 22 minutes at the start of 1912. 144e273650fSPhilip Paeps (Thanks to Tim Parenti.) 145e273650fSPhilip Paeps 146e273650fSPhilip Paeps Changes to past tm_isdst flags 147e273650fSPhilip Paeps 148e273650fSPhilip Paeps The period from 1966-04-03 through 1966-10-02 in Portugal is now 149e273650fSPhilip Paeps modeled as DST, to more closely reflect how contemporaneous changes 150e273650fSPhilip Paeps in law entered into force. 151e273650fSPhilip Paeps 152e273650fSPhilip Paeps Changes to data 153e273650fSPhilip Paeps 154e273650fSPhilip Paeps Names present only for compatibility with UNIX System V 155e273650fSPhilip Paeps (last released in the 1990s) have been moved to 'backward'. 156e273650fSPhilip Paeps These names, which for post-1970 timestamps mostly just duplicate 157e273650fSPhilip Paeps data of geographical names, were confusing downstream uses. 158e273650fSPhilip Paeps Names moved to 'backward' are now links to geographical names. 159e273650fSPhilip Paeps This affects behavior for TZ='EET' for some pre-1981 timestamps, 160e273650fSPhilip Paeps for TZ='CET' for some pre-1947 timestamps, and for TZ='WET' for 161e273650fSPhilip Paeps some pre-1996 timestamps. Also, TZ='MET' now behaves like 162e273650fSPhilip Paeps TZ='CET' and so uses the abbreviation "CET" rather than "MET". 163e273650fSPhilip Paeps Those needing the previous TZDB behavior, which does not match any 164e273650fSPhilip Paeps real-world clocks, can find the old entries in 'backzone'. 165e273650fSPhilip Paeps (Problem reported by Justin Grant.) 166e273650fSPhilip Paeps 167e273650fSPhilip Paeps The main source files' time zone abbreviations now use %z, 168e273650fSPhilip Paeps supported by zic since release 2015f and used in vanguard form 169e273650fSPhilip Paeps since release 2022b. For example, America/Sao_Paulo now contains 170e273650fSPhilip Paeps the zone continuation line "-3:00 Brazil %z", which is less error 171e273650fSPhilip Paeps prone than the old "-3:00 Brazil -03/-02". This does not change 172e273650fSPhilip Paeps the represented data: the generated TZif files are unchanged. 173e273650fSPhilip Paeps Rearguard form still avoids %z, to support obsolescent parsers. 174e273650fSPhilip Paeps 175e273650fSPhilip Paeps Asia/Almaty has been removed from zonenow.tab as it now agrees 176e273650fSPhilip Paeps with Asia/Tashkent for future timestamps, due to Kazakhstan's 177e273650fSPhilip Paeps 2024-02-29 time zone change. Similarly, America/Scoresbysund 178e273650fSPhilip Paeps has been removed, as it now agrees with America/Nuuk due to 179e273650fSPhilip Paeps its 2024-03-31 time zone change. 180e273650fSPhilip Paeps 181e273650fSPhilip Paeps Changes to code 182e273650fSPhilip Paeps 183e273650fSPhilip Paeps localtime.c now always uses a TZif file's time type 0 to handle 184e273650fSPhilip Paeps timestamps before the file's first transition. Formerly, 185e273650fSPhilip Paeps localtime.c sometimes inferred a different time type, in order to 186e273650fSPhilip Paeps handle problematic data generated by zic 2018e or earlier. As it 187e273650fSPhilip Paeps is now safe to assume more recent versions of zic, there is no 188e273650fSPhilip Paeps longer a pressing need to fail to conform RFC 8536 section 3.2, 189e273650fSPhilip Paeps which requires using time type 0 in this situation. This change 190e273650fSPhilip Paeps does not affect behavior when reading TZif files generated by zic 191e273650fSPhilip Paeps 2018f and later. 192e273650fSPhilip Paeps 193e273650fSPhilip Paeps POSIX.1-2024 removes asctime_r and ctime_r and does not let 194e273650fSPhilip Paeps libraries define them, so remove them except when needed to 195e273650fSPhilip Paeps conform to earlier POSIX. These functions are dangerous as they 196e273650fSPhilip Paeps can overrun user buffers. If you still need them, add 197e273650fSPhilip Paeps -DSUPPORT_POSIX2008 to CFLAGS. 198e273650fSPhilip Paeps 199e273650fSPhilip Paeps The SUPPORT_C89 option now defaults to 1 instead of 0, fixing a 200e273650fSPhilip Paeps POSIX-conformance bug introduced in 2023a. 201e273650fSPhilip Paeps 202e273650fSPhilip Paeps tzselect now supports POSIX.1-2024 proleptic TZ strings. Also, it 203e273650fSPhilip Paeps assumes POSIX.2-1992 or later, as practical porting targets now 204e273650fSPhilip Paeps all support that, and it uses some features from POSIX.1-2024 if 205e273650fSPhilip Paeps available. 206e273650fSPhilip Paeps 207e273650fSPhilip Paeps Changes to build procedure 208e273650fSPhilip Paeps 209e273650fSPhilip Paeps 'make check' no longer requires curl and Internet access. 210e273650fSPhilip Paeps 211e273650fSPhilip Paeps The build procedure now assumes POSIX.2-1992 or later, to simplify 212e273650fSPhilip Paeps maintenance. To build on Solaris 10, the only extant system still 213e273650fSPhilip Paeps defaulting to pre-POSIX, prepend /usr/xpg4/bin to PATH. 214e273650fSPhilip Paeps 215e273650fSPhilip Paeps Changes to documentation 216e273650fSPhilip Paeps 217e273650fSPhilip Paeps The documentation now reflects POSIX.1-2024. 218e273650fSPhilip Paeps 219e273650fSPhilip Paeps Changes to commentary 220e273650fSPhilip Paeps 221e273650fSPhilip Paeps Commentary about historical transitions in Portugal and her former 22246226b01SPhilip Paeps colonies has been expanded with links to relevant legislation. 223e273650fSPhilip Paeps (Thanks to Tim Parenti.) 224e273650fSPhilip Paeps 225e273650fSPhilip Paeps 2262723c7ffSPhilip PaepsRelease 2024a - 2024-02-01 09:28:56 -0800 2272723c7ffSPhilip Paeps 2282723c7ffSPhilip Paeps Briefly: 2292723c7ffSPhilip Paeps Kazakhstan unifies on UTC+5 beginning 2024-03-01. 2302723c7ffSPhilip Paeps Palestine springs forward a week later after Ramadan. 2312723c7ffSPhilip Paeps zic no longer pretends to support indefinite-past DST. 2322723c7ffSPhilip Paeps localtime no longer mishandles Ciudad Juárez in 2422. 2332723c7ffSPhilip Paeps 2342723c7ffSPhilip Paeps Changes to future timestamps 2352723c7ffSPhilip Paeps 2362723c7ffSPhilip Paeps Kazakhstan unifies on UTC+5. This affects Asia/Almaty and 2372723c7ffSPhilip Paeps Asia/Qostanay which together represent the eastern portion of the 2382723c7ffSPhilip Paeps country that will transition from UTC+6 on 2024-03-01 at 00:00 to 2392723c7ffSPhilip Paeps join the western portion. (Thanks to Zhanbolat Raimbekov.) 2402723c7ffSPhilip Paeps 2412723c7ffSPhilip Paeps Palestine springs forward a week later than previously predicted 2422723c7ffSPhilip Paeps in 2024 and 2025. (Thanks to Heba Hamad.) Change spring-forward 2432723c7ffSPhilip Paeps predictions to the second Saturday after Ramadan, not the first; 2442723c7ffSPhilip Paeps this also affects other predictions starting in 2039. 2452723c7ffSPhilip Paeps 2462723c7ffSPhilip Paeps Changes to past timestamps 2472723c7ffSPhilip Paeps 2482723c7ffSPhilip Paeps Asia/Ho_Chi_Minh's 1955-07-01 transition occurred at 01:00 2492723c7ffSPhilip Paeps not 00:00. (Thanks to Đoàn Trần Công Danh.) 2502723c7ffSPhilip Paeps 2512723c7ffSPhilip Paeps From 1947 through 1949, Toronto's transitions occurred at 02:00 2522723c7ffSPhilip Paeps not 00:00. (Thanks to Chris Walton.) 2532723c7ffSPhilip Paeps 2542723c7ffSPhilip Paeps In 1911 Miquelon adopted standard time on June 15, not May 15. 2552723c7ffSPhilip Paeps 2562723c7ffSPhilip Paeps Changes to code 2572723c7ffSPhilip Paeps 2582723c7ffSPhilip Paeps The FROM and TO columns of Rule lines can no longer be "minimum" 2592723c7ffSPhilip Paeps or an abbreviation of "minimum", because TZif files do not support 2602723c7ffSPhilip Paeps DST rules that extend into the indefinite past - although these 2612723c7ffSPhilip Paeps rules were supported when TZif files had only 32-bit data, this 2622723c7ffSPhilip Paeps stopped working when 64-bit TZif files were introduced in 1995. 2632723c7ffSPhilip Paeps This should not be a problem for realistic data, since DST was 2642723c7ffSPhilip Paeps first used in the 20th century. As a transition aid, FROM columns 2652723c7ffSPhilip Paeps like "minimum" are now diagnosed and then treated as if they were 2662723c7ffSPhilip Paeps the year 1900; this should suffice for TZif files on old systems 2672723c7ffSPhilip Paeps with only 32-bit time_t, and it is more compatible with bugs in 2682723c7ffSPhilip Paeps 2023c-and-earlier localtime.c. (Problem reported by Yoshito 2692723c7ffSPhilip Paeps Umaoka.) 2702723c7ffSPhilip Paeps 2712723c7ffSPhilip Paeps localtime and related functions no longer mishandle some 2722723c7ffSPhilip Paeps timestamps that occur about 400 years after a switch to a time 2732723c7ffSPhilip Paeps zone with a DST schedule. In 2023d data this problem was visible 2742723c7ffSPhilip Paeps for some timestamps in November 2422, November 2822, etc. in 2752723c7ffSPhilip Paeps America/Ciudad_Juarez. (Problem reported by Gilmore Davidson.) 2762723c7ffSPhilip Paeps 2772723c7ffSPhilip Paeps strftime %s now uses tm_gmtoff if available. (Problem and draft 2782723c7ffSPhilip Paeps patch reported by Dag-Erling Smørgrav.) 2792723c7ffSPhilip Paeps 2802723c7ffSPhilip Paeps Changes to build procedure 2812723c7ffSPhilip Paeps 2822723c7ffSPhilip Paeps The leap-seconds.list file is now copied from the IERS instead of 2832723c7ffSPhilip Paeps from its downstream counterpart at NIST, as the IERS version is 2842723c7ffSPhilip Paeps now in the public domain too and tends to be more up-to-date. 2852723c7ffSPhilip Paeps (Thanks to Martin Burnicki for liaisoning with the IERS.) 2862723c7ffSPhilip Paeps 2872723c7ffSPhilip Paeps Changes to documentation 2882723c7ffSPhilip Paeps 2892723c7ffSPhilip Paeps The strftime man page documents which struct tm members affect 2902723c7ffSPhilip Paeps which conversion specs, and that tzset is called. (Problems 2912723c7ffSPhilip Paeps reported by Robert Elz and Steve Summit.) 2922723c7ffSPhilip Paeps 2932723c7ffSPhilip Paeps 294eebb9c2cSPhilip PaepsRelease 2023d - 2023-12-21 20:02:24 -0800 295eebb9c2cSPhilip Paeps 296eebb9c2cSPhilip Paeps Briefly: 297eebb9c2cSPhilip Paeps Ittoqqortoormiit, Greenland changes time zones on 2024-03-31. 298eebb9c2cSPhilip Paeps Vostok, Antarctica changed time zones on 2023-12-18. 299eebb9c2cSPhilip Paeps Casey, Antarctica changed time zones five times since 2020. 300eebb9c2cSPhilip Paeps Code and data fixes for Palestine timestamps starting in 2072. 301eebb9c2cSPhilip Paeps A new data file zonenow.tab for timestamps starting now. 302eebb9c2cSPhilip Paeps 303eebb9c2cSPhilip Paeps Changes to future timestamps 304eebb9c2cSPhilip Paeps 305eebb9c2cSPhilip Paeps Ittoqqortoormiit, Greenland (America/Scoresbysund) joins most of 306eebb9c2cSPhilip Paeps the rest of Greenland's timekeeping practice on 2024-03-31, by 307eebb9c2cSPhilip Paeps changing its time zone from -01/+00 to -02/-01 at the same moment 308eebb9c2cSPhilip Paeps as the spring-forward transition. Its clocks will therefore not 309eebb9c2cSPhilip Paeps spring forward as previously scheduled. The time zone change 31046226b01SPhilip Paeps reverts to its common practice before 1981. (Thanks to Jule Dabars.) 311eebb9c2cSPhilip Paeps 312eebb9c2cSPhilip Paeps Fix predictions for DST transitions in Palestine in 2072-2075, 31346226b01SPhilip Paeps correcting a typo introduced in 2023a. (Thanks to Jule Dabars.) 314eebb9c2cSPhilip Paeps 315eebb9c2cSPhilip Paeps Changes to past and future timestamps 316eebb9c2cSPhilip Paeps 317eebb9c2cSPhilip Paeps Vostok, Antarctica changed to +05 on 2023-12-18. It had been at 318eebb9c2cSPhilip Paeps +07 (not +06) for years. (Thanks to Zakhary V. Akulov.) 319eebb9c2cSPhilip Paeps 320eebb9c2cSPhilip Paeps Change data for Casey, Antarctica to agree with timeanddate.com, 321eebb9c2cSPhilip Paeps by adding five time zone changes since 2020. Casey is now at +08 322eebb9c2cSPhilip Paeps instead of +11. 323eebb9c2cSPhilip Paeps 324eebb9c2cSPhilip Paeps Changes to past tm_isdst flags 325eebb9c2cSPhilip Paeps 326eebb9c2cSPhilip Paeps Much of Greenland, represented by America/Nuuk, changed its 327eebb9c2cSPhilip Paeps standard time from -03 to -02 on 2023-03-25, not on 2023-10-28. 328eebb9c2cSPhilip Paeps This does not affect UTC offsets, only the tm_isdst flag. 329eebb9c2cSPhilip Paeps (Thanks to Thomas M. Steenholdt.) 330eebb9c2cSPhilip Paeps 331eebb9c2cSPhilip Paeps New data file 332eebb9c2cSPhilip Paeps 333eebb9c2cSPhilip Paeps A new data file zonenow.tab helps configure applications that use 334eebb9c2cSPhilip Paeps timestamps dated from now on. This simplifies configuration, 335eebb9c2cSPhilip Paeps since users choose from a smaller Zone set. The file's format is 336eebb9c2cSPhilip Paeps experimental and subject to change. 337eebb9c2cSPhilip Paeps 338eebb9c2cSPhilip Paeps Changes to code 339eebb9c2cSPhilip Paeps 340eebb9c2cSPhilip Paeps localtime.c no longer mishandles TZif files that contain a single 341eebb9c2cSPhilip Paeps transition into a DST regime. Previously, it incorrectly assumed 342eebb9c2cSPhilip Paeps DST was in effect before the transition too. (Thanks to Alois 343eebb9c2cSPhilip Paeps Treindl for debugging help.) 344eebb9c2cSPhilip Paeps 345eebb9c2cSPhilip Paeps localtime.c's timeoff no longer collides with OpenBSD 7.4. 346eebb9c2cSPhilip Paeps 347eebb9c2cSPhilip Paeps The C code now uses _Generic only if __STDC_VERSION__ says the 348eebb9c2cSPhilip Paeps compiler is C11 or later. 349eebb9c2cSPhilip Paeps 350eebb9c2cSPhilip Paeps tzselect now optionally reads zonenow.tab, to simplify when 351eebb9c2cSPhilip Paeps configuring only for timestamps dated from now on. 352eebb9c2cSPhilip Paeps 353eebb9c2cSPhilip Paeps tzselect no longer creates temporary files. 354eebb9c2cSPhilip Paeps 355eebb9c2cSPhilip Paeps tzselect no longer mishandles the following: 356eebb9c2cSPhilip Paeps 357eebb9c2cSPhilip Paeps Spaces and most other special characters in BUGEMAIL, PACKAGE, 358eebb9c2cSPhilip Paeps TZDIR, and VERSION. 359eebb9c2cSPhilip Paeps 360eebb9c2cSPhilip Paeps TZ strings when using mawk 1.4.3, which mishandles regular 361eebb9c2cSPhilip Paeps expressions of the form /X{2,}/. 362eebb9c2cSPhilip Paeps 363eebb9c2cSPhilip Paeps ISO 6709 coordinates when using an awk that lacks the GNU 364eebb9c2cSPhilip Paeps extension of newlines in -v option-arguments. 365eebb9c2cSPhilip Paeps 366eebb9c2cSPhilip Paeps Non UTF-8 locales when using an iconv command that lacks the GNU 367eebb9c2cSPhilip Paeps //TRANSLIT extension. 368eebb9c2cSPhilip Paeps 369eebb9c2cSPhilip Paeps zic no longer mishandles data for Palestine after the year 2075. 370eebb9c2cSPhilip Paeps Previously, it incorrectly omitted post-2075 transitions that are 371eebb9c2cSPhilip Paeps predicted for just before and just after Ramadan. (Thanks to Ken 372eebb9c2cSPhilip Paeps Murchison for debugging help.) 373eebb9c2cSPhilip Paeps 374eebb9c2cSPhilip Paeps zic now works again on Linux 2.6.16 and 2.6.17 (2006). 375eebb9c2cSPhilip Paeps (Problem reported by Rune Torgersen.) 376eebb9c2cSPhilip Paeps 377eebb9c2cSPhilip Paeps Changes to build procedure 378eebb9c2cSPhilip Paeps 379eebb9c2cSPhilip Paeps The Makefile is now more compatible with POSIX: 380eebb9c2cSPhilip Paeps * It no longer defines AR, CC, CFLAGS, LDFLAGS, and SHELL. 381eebb9c2cSPhilip Paeps * It no longer uses its own 'cc' in place of CC. 382eebb9c2cSPhilip Paeps * It now uses ARFLAGS, with default specified by POSIX. 383eebb9c2cSPhilip Paeps * It does not use LFLAGS incompatibly with POSIX. 384eebb9c2cSPhilip Paeps * It uses the special .POSIX target. 385eebb9c2cSPhilip Paeps * It quotes special characters more carefully. 386eebb9c2cSPhilip Paeps * It no longer mishandles builds in an ISO 8859 locale. 387e273650fSPhilip Paeps Due to the CC changes, TZDIR is now #defined in a file tzdir.h 388eebb9c2cSPhilip Paeps built by 'make', not in a $(CC) -D option. Also, TZDEFAULT is 389eebb9c2cSPhilip Paeps now treated like TZDIR as they have similar roles. 390eebb9c2cSPhilip Paeps 391eebb9c2cSPhilip Paeps Changes to commentary 392eebb9c2cSPhilip Paeps 393eebb9c2cSPhilip Paeps Limitations and hazards of the optional support for obsolescent 394eebb9c2cSPhilip Paeps C89 platforms are documented better, along with a tentative 395eebb9c2cSPhilip Paeps schedule for removing this support. 396eebb9c2cSPhilip Paeps 397eebb9c2cSPhilip Paeps 3989fbeeb6eSPhilip PaepsRelease 2023c - 2023-03-28 12:42:14 -0700 3992084f6a4SPhilip Paeps 4009fbeeb6eSPhilip Paeps Changes to past and future timestamps 4019fbeeb6eSPhilip Paeps 4029fbeeb6eSPhilip Paeps Model Lebanon's DST chaos by reverting data to tzdb 2023a. 4039fbeeb6eSPhilip Paeps (Thanks to Rany Hany for the heads-up.) 4049fbeeb6eSPhilip Paeps 4059fbeeb6eSPhilip Paeps 4069fbeeb6eSPhilip PaepsRelease 2023b - 2023-03-23 19:50:38 -0700 4072084f6a4SPhilip Paeps 4082084f6a4SPhilip Paeps Changes to future timestamps 4092084f6a4SPhilip Paeps 4102084f6a4SPhilip Paeps This year Lebanon springs forward April 20/21 not March 25/26. 4119fbeeb6eSPhilip Paeps (Thanks to Saadallah Itani.) [This was reverted in 2023c.] 4122084f6a4SPhilip Paeps 4132084f6a4SPhilip Paeps 414259e2ad7SPhilip PaepsRelease 2023a - 2023-03-22 12:39:33 -0700 415259e2ad7SPhilip Paeps 416259e2ad7SPhilip Paeps Briefly: 417259e2ad7SPhilip Paeps Egypt now uses DST again, from April through October. 418259e2ad7SPhilip Paeps This year Morocco springs forward April 23, not April 30. 419259e2ad7SPhilip Paeps Palestine delays the start of DST this year. 420259e2ad7SPhilip Paeps Much of Greenland still uses DST from 2024 on. 421259e2ad7SPhilip Paeps America/Yellowknife now links to America/Edmonton. 422259e2ad7SPhilip Paeps tzselect can now use current time to help infer timezone. 423259e2ad7SPhilip Paeps The code now defaults to C99 or later. 424259e2ad7SPhilip Paeps Fix use of C23 attributes. 425259e2ad7SPhilip Paeps 426259e2ad7SPhilip Paeps Changes to future timestamps 427259e2ad7SPhilip Paeps 428259e2ad7SPhilip Paeps Starting in 2023, Egypt will observe DST from April's last Friday 429259e2ad7SPhilip Paeps through October's last Thursday. (Thanks to Ahmad ElDardiry.) 430259e2ad7SPhilip Paeps Assume the transition times are 00:00 and 24:00, respectively. 431259e2ad7SPhilip Paeps 432259e2ad7SPhilip Paeps In 2023 Morocco's spring-forward transition after Ramadan 433259e2ad7SPhilip Paeps will occur April 23, not April 30. (Thanks to Milamber.) 434259e2ad7SPhilip Paeps Adjust predictions for future years accordingly. This affects 435259e2ad7SPhilip Paeps predictions for 2023, 2031, 2038, and later years. 436259e2ad7SPhilip Paeps 437259e2ad7SPhilip Paeps This year Palestine will delay its spring forward from 438259e2ad7SPhilip Paeps March 25 to April 29 due to Ramadan. (Thanks to Heba Hamad.) 439259e2ad7SPhilip Paeps Make guesses for future Ramadans too. 440259e2ad7SPhilip Paeps 441259e2ad7SPhilip Paeps Much of Greenland, represented by America/Nuuk, will continue to 442259e2ad7SPhilip Paeps observe DST using European Union rules. When combined with 443259e2ad7SPhilip Paeps Greenland's decision not to change the clocks in fall 2023, 444259e2ad7SPhilip Paeps America/Nuuk therefore changes from -03/-02 to -02/-01 effective 445259e2ad7SPhilip Paeps 2023-10-29 at 01:00 UTC. (Thanks to Thomas M. Steenholdt.) 446259e2ad7SPhilip Paeps This change from 2022g doesn't affect timestamps until 2024-03-30, 447259e2ad7SPhilip Paeps and doesn't affect tm_isdst until 2023-03-25. 448259e2ad7SPhilip Paeps 449259e2ad7SPhilip Paeps Changes to past timestamps 450259e2ad7SPhilip Paeps 451259e2ad7SPhilip Paeps America/Yellowknife has changed from a Zone to a backward 452259e2ad7SPhilip Paeps compatibility Link, as it no longer differs from America/Edmonton 453259e2ad7SPhilip Paeps since 1970. (Thanks to Almaz Mingaleev.) This affects some 454259e2ad7SPhilip Paeps pre-1948 timestamps. The old data are now in 'backzone'. 455259e2ad7SPhilip Paeps 456259e2ad7SPhilip Paeps Changes to past time zone abbreviations 457259e2ad7SPhilip Paeps 458259e2ad7SPhilip Paeps When observing Moscow time, Europe/Kirov and Europe/Volgograd now 459259e2ad7SPhilip Paeps use the abbreviations MSK/MSD instead of numeric abbreviations, 460259e2ad7SPhilip Paeps for consistency with other timezones observing Moscow time. 461259e2ad7SPhilip Paeps 462259e2ad7SPhilip Paeps Changes to code 463259e2ad7SPhilip Paeps 464259e2ad7SPhilip Paeps You can now tell tzselect local time, to simplify later choices. 465259e2ad7SPhilip Paeps Select the 'time' option in its first prompt. 466259e2ad7SPhilip Paeps 467259e2ad7SPhilip Paeps You can now compile with -DTZNAME_MAXIMUM=N to limit time zone 468259e2ad7SPhilip Paeps abbreviations to N bytes (default 255). The reference runtime 469259e2ad7SPhilip Paeps library now rejects POSIX-style TZ strings that contain longer 470259e2ad7SPhilip Paeps abbreviations, treating them as UTC. Previously the limit was 471259e2ad7SPhilip Paeps platform dependent and abbreviations were silently truncated to 472259e2ad7SPhilip Paeps 16 bytes even when the limit was greater than 16. 473259e2ad7SPhilip Paeps 474eebb9c2cSPhilip Paeps The code by default is now designed for C99 or later. To build on 475eebb9c2cSPhilip Paeps a mostly-C89 platform, compile with -DPORT_TO_C89; this should 476eebb9c2cSPhilip Paeps work on C89 platforms that also support C99 'long long' and 477eebb9c2cSPhilip Paeps perhaps a few other extensions to C89. To support C89 callers of 478eebb9c2cSPhilip Paeps tzcode's library, compile with -DSUPPORT_C89; however, this could 479eebb9c2cSPhilip Paeps trigger latent bugs in C99-or-later callers. The two new macros 480eebb9c2cSPhilip Paeps are transitional aids planned to be removed in a future version 481eebb9c2cSPhilip Paeps (say, in 2029), when C99 or later will be required. 482259e2ad7SPhilip Paeps 483259e2ad7SPhilip Paeps The code now builds again on pre-C99 platforms, if you compile 484259e2ad7SPhilip Paeps with -DPORT_TO_C89. This fixes a bug introduced in 2022f. 485259e2ad7SPhilip Paeps 486259e2ad7SPhilip Paeps On C23-compatible platforms tzcode no longer uses syntax like 487259e2ad7SPhilip Paeps 'static [[noreturn]] void usage(void);'. Instead, it uses 488259e2ad7SPhilip Paeps '[[noreturn]] static void usage(void);' as strict C23 requires. 489259e2ad7SPhilip Paeps (Problem reported by Houge Langley.) 490259e2ad7SPhilip Paeps 491259e2ad7SPhilip Paeps The code's functions now constrain their arguments with the C 492259e2ad7SPhilip Paeps 'restrict' keyword consistently with their documentation. 493259e2ad7SPhilip Paeps This may allow future optimizations. 494259e2ad7SPhilip Paeps 495259e2ad7SPhilip Paeps zdump again builds standalone with ckdadd and without setenv, 496259e2ad7SPhilip Paeps fixing a bug introduced in 2022g. (Problem reported by panic.) 497259e2ad7SPhilip Paeps 498259e2ad7SPhilip Paeps leapseconds.awk can now process a leap seconds file that never 499259e2ad7SPhilip Paeps expires; this might be useful if leap seconds are discontinued. 500259e2ad7SPhilip Paeps 501259e2ad7SPhilip Paeps Changes to commentary 502259e2ad7SPhilip Paeps 503259e2ad7SPhilip Paeps tz-link.html has a new section "Coordinating with governments and 504259e2ad7SPhilip Paeps distributors". (Thanks to Neil Fuller for some of the text.) 505259e2ad7SPhilip Paeps 506259e2ad7SPhilip Paeps To improve tzselect diagnostics, zone1970.tab's comments column is 507259e2ad7SPhilip Paeps now limited to countries that have multiple timezones. 508259e2ad7SPhilip Paeps 509e273650fSPhilip Paeps Note that there are plans to discontinue leap seconds by 2035. 510259e2ad7SPhilip Paeps 511259e2ad7SPhilip Paeps 512cf1ad535SPhilip PaepsRelease 2022g - 2022-11-29 08:58:31 -0800 513cf1ad535SPhilip Paeps 514cf1ad535SPhilip Paeps Briefly: 515cf1ad535SPhilip Paeps The northern edge of Chihuahua changes to US timekeeping. 516cf1ad535SPhilip Paeps Much of Greenland stops changing clocks after March 2023. 517cf1ad535SPhilip Paeps Fix some pre-1996 timestamps in northern Canada. 518cf1ad535SPhilip Paeps C89 is now deprecated; please use C99 or later. 519cf1ad535SPhilip Paeps Portability fixes for AIX, libintl, MS-Windows, musl, z/OS 520cf1ad535SPhilip Paeps In C code, use more C23 features if available. 521cf1ad535SPhilip Paeps C23 timegm now supported by default 522cf1ad535SPhilip Paeps Fixes for unlikely integer overflows 523cf1ad535SPhilip Paeps 524cf1ad535SPhilip Paeps Changes to future timestamps 525cf1ad535SPhilip Paeps 526cf1ad535SPhilip Paeps In the Mexican state of Chihuahua, the border strip near the US 527cf1ad535SPhilip Paeps will change to agree with nearby US locations on 2022-11-30. 528cf1ad535SPhilip Paeps The strip's western part, represented by Ciudad Juárez, switches 529cf1ad535SPhilip Paeps from -06 all year to -07/-06 with US DST rules, like El Paso, TX. 530cf1ad535SPhilip Paeps The eastern part, represented by Ojinaga, will observe US DST next 531cf1ad535SPhilip Paeps year, like Presidio, TX. (Thanks to Heitor David Pinto.) 532cf1ad535SPhilip Paeps A new Zone America/Ciudad_Juarez splits from America/Ojinaga. 533cf1ad535SPhilip Paeps 534cf1ad535SPhilip Paeps Much of Greenland, represented by America/Nuuk, stops observing 535cf1ad535SPhilip Paeps winter time after March 2023, so its daylight saving time becomes 536cf1ad535SPhilip Paeps standard time. (Thanks to Jonas Nyrup and Jürgen Appel.) 537cf1ad535SPhilip Paeps 538cf1ad535SPhilip Paeps Changes to past timestamps 539cf1ad535SPhilip Paeps 540cf1ad535SPhilip Paeps Changes for pre-1996 northern Canada (thanks to Chris Walton): 541cf1ad535SPhilip Paeps 542cf1ad535SPhilip Paeps Merge America/Iqaluit and America/Pangnirtung into the former, 543cf1ad535SPhilip Paeps with a backward compatibility link for the latter name. 544cf1ad535SPhilip Paeps There is no good evidence the two locations differ since 1970. 545cf1ad535SPhilip Paeps This change affects pre-1996 America/Pangnirtung timestamps. 546cf1ad535SPhilip Paeps 547cf1ad535SPhilip Paeps Cambridge Bay, Inuvik, Iqaluit, Rankin Inlet, Resolute and 548cf1ad535SPhilip Paeps Yellowknife did not observe DST in 1965, and did observe DST 549cf1ad535SPhilip Paeps from 1972 through 1979. 550cf1ad535SPhilip Paeps 551cf1ad535SPhilip Paeps Whitehorse moved from -09 to -08 on 1966-02-27, not 1967-05-28. 552cf1ad535SPhilip Paeps 553cf1ad535SPhilip Paeps Colombia's 1993 fallback was 02-06 24:00, not 04-04 00:00. 554cf1ad535SPhilip Paeps (Thanks to Alois Treindl.) 555cf1ad535SPhilip Paeps 556cf1ad535SPhilip Paeps Singapore's 1981-12-31 change was at 16:00 UTC (23:30 local time), 557cf1ad535SPhilip Paeps not 24:00 local time. (Thanks to Geoff Clare via Robert Elz.) 558cf1ad535SPhilip Paeps 559cf1ad535SPhilip Paeps Changes to code 560cf1ad535SPhilip Paeps 561cf1ad535SPhilip Paeps Although tzcode still works with C89, bugs found in recent routine 562cf1ad535SPhilip Paeps maintenance indicate that bitrot has set in and that in practice 563cf1ad535SPhilip Paeps C89 is no longer used to build tzcode. As it is a maintenance 564cf1ad535SPhilip Paeps burden, support for C89 is planned to be removed soon. Instead, 565cf1ad535SPhilip Paeps please use compilers compatible with C99, C11, C17, or C23. 566cf1ad535SPhilip Paeps 567cf1ad535SPhilip Paeps timegm, which tzcode implemented in 1989, will finally be 568cf1ad535SPhilip Paeps standardized 34 years later as part of C23, so timegm is now 569cf1ad535SPhilip Paeps supported even if STD_INSPIRED is not defined. 570cf1ad535SPhilip Paeps 571cf1ad535SPhilip Paeps Fix bug in zdump's tzalloc emulation on hosts that lack tm_zone. 572cf1ad535SPhilip Paeps (Problem reported by Đoàn Trần Công Danh.) 573cf1ad535SPhilip Paeps 574cf1ad535SPhilip Paeps Fix bug in zic on hosts where malloc(0) yields NULL on success. 575cf1ad535SPhilip Paeps (Problem reported by Tim McBrayer for AIX 6.1.) 576cf1ad535SPhilip Paeps 577cf1ad535SPhilip Paeps Fix zic configuration to avoid linkage failures on some platforms. 578cf1ad535SPhilip Paeps (Problems reported by Gilmore Davidson and Igor Ivanov.) 579cf1ad535SPhilip Paeps 580cf1ad535SPhilip Paeps Work around MS-Windows nmake incompatibility with POSIX. 581cf1ad535SPhilip Paeps (Problem reported by Manuela Friedrich.) 582cf1ad535SPhilip Paeps 583cf1ad535SPhilip Paeps Port mktime and strftime to debugging platforms where accessing 584cf1ad535SPhilip Paeps uninitialized data has undefined behavior (strftime problem 585cf1ad535SPhilip Paeps reported by Robert Elz). 586cf1ad535SPhilip Paeps 587cf1ad535SPhilip Paeps Check more carefully for unlikely integer overflows, preferring 588cf1ad535SPhilip Paeps C23 <stdckdint.h> to overflow checking by hand, as the latter has 589cf1ad535SPhilip Paeps had obscure bugs. 590cf1ad535SPhilip Paeps 591cf1ad535SPhilip Paeps Changes to build procedure 592cf1ad535SPhilip Paeps 593cf1ad535SPhilip Paeps New Makefile rule check_mild that skips checking whether Link 594cf1ad535SPhilip Paeps lines are in the file 'backward'. (Inspired by a suggestion from 595cf1ad535SPhilip Paeps Stephen Colebourne.) 596cf1ad535SPhilip Paeps 597cf1ad535SPhilip Paeps 5989142a2a3SPhilip PaepsRelease 2022f - 2022-10-28 18:04:57 -0700 5999142a2a3SPhilip Paeps 6009142a2a3SPhilip Paeps Briefly: 6019142a2a3SPhilip Paeps Mexico will no longer observe DST except near the US border. 6029142a2a3SPhilip Paeps Chihuahua moves to year-round -06 on 2022-10-30. 6039142a2a3SPhilip Paeps Fiji no longer observes DST. 6049142a2a3SPhilip Paeps Move links to 'backward'. 6059142a2a3SPhilip Paeps In vanguard form, GMT is now a Zone and Etc/GMT a link. 6069142a2a3SPhilip Paeps zic now supports links to links, and vanguard form uses this. 6079142a2a3SPhilip Paeps Simplify four Ontario zones. 6089142a2a3SPhilip Paeps Fix a Y2438 bug when reading TZif data. 6099142a2a3SPhilip Paeps Enable 64-bit time_t on 32-bit glibc platforms. 6109142a2a3SPhilip Paeps Omit large-file support when no longer needed. 6119142a2a3SPhilip Paeps In C code, use some C23 features if available. 6129142a2a3SPhilip Paeps Remove no-longer-needed workaround for Qt bug 53071. 6139142a2a3SPhilip Paeps 614cf1ad535SPhilip Paeps Changes to future timestamps 6159142a2a3SPhilip Paeps 6169142a2a3SPhilip Paeps Mexico will no longer observe DST after 2022, except for areas 6179142a2a3SPhilip Paeps near the US border that continue to observe US DST rules. 6189142a2a3SPhilip Paeps On 2022-10-30 at 02:00 the Mexican state of Chihuahua moves 6199142a2a3SPhilip Paeps from -07 (-06 with DST) to year-round -06, thus not changing 6209142a2a3SPhilip Paeps its clocks that day. The new law states that Chihuahua 6219142a2a3SPhilip Paeps near the US border no longer observes US DST. 622cf1ad535SPhilip Paeps (Thanks to gera for the heads-up about Chihuahua.) 6239142a2a3SPhilip Paeps 6249142a2a3SPhilip Paeps Fiji will not observe DST in 2022/3. (Thanks to Shalvin Narayan.) 6259142a2a3SPhilip Paeps For now, assume DST is suspended indefinitely. 6269142a2a3SPhilip Paeps 6279142a2a3SPhilip Paeps Changes to data 6289142a2a3SPhilip Paeps 6299142a2a3SPhilip Paeps Move links to 'backward' to ease and simplify link maintenance. 6309142a2a3SPhilip Paeps This affects generated data only if you use 'make BACKWARD='. 6319142a2a3SPhilip Paeps 6329142a2a3SPhilip Paeps GMT is now a Zone and Etc/GMT a link instead of vice versa, 6339142a2a3SPhilip Paeps as GMT is needed for leap second support whereas Etc/GMT is not. 6349142a2a3SPhilip Paeps However, this change exposes a bug in TZUpdater 2.3.2 so it is 6359142a2a3SPhilip Paeps present only in vanguard form for now. 6369142a2a3SPhilip Paeps 6379142a2a3SPhilip Paeps Vanguard form now uses links to links, as zic now supports this. 6389142a2a3SPhilip Paeps 6399142a2a3SPhilip Paeps Changes to past timestamps 6409142a2a3SPhilip Paeps 6419142a2a3SPhilip Paeps Simplify four Ontario zones, as most of the post-1970 differences 6429142a2a3SPhilip Paeps seem to have been imaginary. (Problem reported by Chris Walton.) 6439142a2a3SPhilip Paeps Move America/Nipigon, America/Rainy_River, and America/Thunder_Bay 6449142a2a3SPhilip Paeps to 'backzone'; backward-compatibility links still work, albeit 6459142a2a3SPhilip Paeps with some different timestamps before November 2005. 6469142a2a3SPhilip Paeps 6479142a2a3SPhilip Paeps Changes to code 6489142a2a3SPhilip Paeps 6499142a2a3SPhilip Paeps zic now supports links to links regardless of input line order. 6509142a2a3SPhilip Paeps For example, if Australia/Sydney is a Zone, the lines 6519142a2a3SPhilip Paeps Link Australia/Canberra Australia/ACT 6529142a2a3SPhilip Paeps Link Australia/Sydney Australia/Canberra 6539142a2a3SPhilip Paeps now work correctly, even though the shell commands 6549142a2a3SPhilip Paeps ln Australia/Canberra Australia/ACT 6559142a2a3SPhilip Paeps ln Australia/Sydney Australia/Canberra 6569142a2a3SPhilip Paeps would fail because the first command attempts to use a link 6579142a2a3SPhilip Paeps Australia/Canberra that does not exist until after the second 6589142a2a3SPhilip Paeps command is executed. Previously, zic had unspecified behavior if 6599142a2a3SPhilip Paeps a Link line's target was another link, and zic often misbehaved if 6609142a2a3SPhilip Paeps a Link line's target was a later Link line. 6619142a2a3SPhilip Paeps 6629142a2a3SPhilip Paeps Fix line number in zic's diagnostic for a link to a link. 6639142a2a3SPhilip Paeps 6649142a2a3SPhilip Paeps Fix a bug that caused localtime to mishandle timestamps starting 6659142a2a3SPhilip Paeps in the year 2438 when reading data generated by 'zic -b fat' when 6669142a2a3SPhilip Paeps distant-future DST transitions occur at times given in standard 6679142a2a3SPhilip Paeps time or in UT, not the usual case of local time. This occurs when 6689142a2a3SPhilip Paeps the corresponding .zi Rule lines specify DST transitions with TO 6699142a2a3SPhilip Paeps columns of 'max' and AT columns that end in 's' or 'u'. The 6709142a2a3SPhilip Paeps number 2438 comes from the 32-bit limit in the year 2038, plus the 6719142a2a3SPhilip Paeps 400-year Gregorian cycle. (Problem reported by Bradley White.) 6729142a2a3SPhilip Paeps 6739142a2a3SPhilip Paeps On glibc 2.34 and later, which optionally supports 64-bit time_t 6749142a2a3SPhilip Paeps on platforms like x86 where time_t was traditionally 32 bits, 6759142a2a3SPhilip Paeps default time_t to 64 instead of 32 bits. This lets functions like 6769142a2a3SPhilip Paeps localtime support timestamps after the year 2038, and fixes 6779142a2a3SPhilip Paeps year-2038 problems in zic when accessing files dated after 2038. 6789142a2a3SPhilip Paeps To continue to limit time_t to 32 bits on these platforms, use 6799142a2a3SPhilip Paeps "make CFLAGS='-D_TIME_BITS=32'". 6809142a2a3SPhilip Paeps 6819142a2a3SPhilip Paeps In C code, do not enable large-file support on platforms like AIX 6829142a2a3SPhilip Paeps and macOS that no longer need it now that tzcode does not use 6839142a2a3SPhilip Paeps off_t or related functions like 'stat'. Large-file support is 6849142a2a3SPhilip Paeps still enabled by default on GNU/Linux, as it is needed for 64-bit 6859142a2a3SPhilip Paeps time_t support. 6869142a2a3SPhilip Paeps 6879142a2a3SPhilip Paeps In C code, prefer C23 keywords to pre-C23 macros for alignof, 6889142a2a3SPhilip Paeps bool, false, and true. Also, use the following C23 features if 6899142a2a3SPhilip Paeps available: __has_include, unreachable. 6909142a2a3SPhilip Paeps 6919142a2a3SPhilip Paeps zic no longer works around Qt bug 53071, as the relevant Qt 6929142a2a3SPhilip Paeps releases have been out of support since 2019. This change affects 6939142a2a3SPhilip Paeps only fat TZif files, as thin files never had the workaround. 6949142a2a3SPhilip Paeps 6959142a2a3SPhilip Paeps zdump no longer modifies the environ vector when compiled on 6969142a2a3SPhilip Paeps platforms lacking tm_zone or when compiled with -DUSE_LTZ=0. 6979142a2a3SPhilip Paeps This avoid undefined behavior on POSIX platforms. 6989142a2a3SPhilip Paeps 6999142a2a3SPhilip Paeps 7005d56371cSPhilip PaepsRelease 2022e - 2022-10-11 11:13:02 -0700 7015d56371cSPhilip Paeps 7025d56371cSPhilip Paeps Briefly: 7035d56371cSPhilip Paeps Jordan and Syria switch from +02/+03 with DST to year-round +03. 7045d56371cSPhilip Paeps 7055d56371cSPhilip Paeps Changes to future timestamps 7065d56371cSPhilip Paeps 7075d56371cSPhilip Paeps Jordan and Syria are abandoning the DST regime and are changing to 7085d56371cSPhilip Paeps permanent +03, so they will not fall back from +03 to +02 on 7095d56371cSPhilip Paeps 2022-10-28. (Thanks to Steffen Thorsen and Issam Al-Zuwairi.) 7105d56371cSPhilip Paeps 7115d56371cSPhilip Paeps Changes to past timestamps 7125d56371cSPhilip Paeps 7135d56371cSPhilip Paeps On 1922-01-01 Tijuana adopted standard time at 00:00, not 01:00. 7145d56371cSPhilip Paeps 7155d56371cSPhilip Paeps Changes to past time zone abbreviations and DST flags 7165d56371cSPhilip Paeps 7175d56371cSPhilip Paeps The temporary advancement of clocks in central Mexico in summer 7185d56371cSPhilip Paeps 1931 is now treated as daylight saving time, instead of as two 7195d56371cSPhilip Paeps changes to standard time. 7205d56371cSPhilip Paeps 7215d56371cSPhilip Paeps 7221576451aSPhilip PaepsRelease 2022d - 2022-09-23 12:02:57 -0700 7231576451aSPhilip Paeps 7241576451aSPhilip Paeps Briefly: 7251576451aSPhilip Paeps Palestine transitions are now Saturdays at 02:00. 7261576451aSPhilip Paeps Simplify three Ukraine zones into one. 7271576451aSPhilip Paeps 7281576451aSPhilip Paeps Changes to future timestamps 7291576451aSPhilip Paeps 7301576451aSPhilip Paeps Palestine now springs forward and falls back at 02:00 on the 7311576451aSPhilip Paeps first Saturday on or after March 24 and October 24, respectively. 7321576451aSPhilip Paeps This means 2022 falls back 10-29 at 02:00, not 10-28 at 01:00. 7331576451aSPhilip Paeps (Thanks to Heba Hamad.) 7341576451aSPhilip Paeps 7351576451aSPhilip Paeps Changes to past timestamps 7361576451aSPhilip Paeps 7371576451aSPhilip Paeps Simplify three Ukraine zones to one, since the post-1970 7381576451aSPhilip Paeps differences seem to have been imaginary. Move Europe/Uzhgorod and 7391576451aSPhilip Paeps Europe/Zaporozhye to 'backzone'; backward-compatibility links 7401576451aSPhilip Paeps still work, albeit with different timestamps before October 1991. 7411576451aSPhilip Paeps 7421576451aSPhilip Paeps 7435f33eb72SPhilip PaepsRelease 2022c - 2022-08-15 17:47:18 -0700 7445f33eb72SPhilip Paeps 7455f33eb72SPhilip Paeps Briefly: 7465f33eb72SPhilip Paeps Work around awk bug in FreeBSD, macOS, etc. 7475f33eb72SPhilip Paeps Improve tzselect on intercontinental Zones. 7485f33eb72SPhilip Paeps 7495f33eb72SPhilip Paeps Changes to code 7505f33eb72SPhilip Paeps 7515f33eb72SPhilip Paeps Work around a bug in onetrueawk that broke commands like 7525f33eb72SPhilip Paeps 'make traditional_tarballs' on FreeBSD, macOS, etc. 7535f33eb72SPhilip Paeps (Problem reported by Deborah Goldsmith.) 7545f33eb72SPhilip Paeps 7555f33eb72SPhilip Paeps Add code to tzselect that uses experimental structured comments in 7565f33eb72SPhilip Paeps zone1970.tab to clarify whether Zones like Africa/Abidjan and 7575f33eb72SPhilip Paeps Europe/Istanbul cross continent or ocean boundaries. 7585f33eb72SPhilip Paeps (Inspired by a problem reported by Peter Krefting.) 7595f33eb72SPhilip Paeps 7605f33eb72SPhilip Paeps Fix bug with 'zic -d /a/b/c' when /a is unwritable but the 7615f33eb72SPhilip Paeps directory /a/b already exists. 7625f33eb72SPhilip Paeps 7635f33eb72SPhilip Paeps Remove zoneinfo2tdf.pl, as it was unused and triggered false 7645f33eb72SPhilip Paeps malware alarms on some email servers. 7655f33eb72SPhilip Paeps 7665f33eb72SPhilip Paeps 7679f9fc6bbSPhilip PaepsRelease 2022b - 2022-08-10 15:38:32 -0700 7689f9fc6bbSPhilip Paeps 7699f9fc6bbSPhilip Paeps Briefly: 7709f9fc6bbSPhilip Paeps Chile's DST is delayed by a week in September 2022. 7719f9fc6bbSPhilip Paeps Iran no longer observes DST after 2022. 7729f9fc6bbSPhilip Paeps Rename Europe/Kiev to Europe/Kyiv. 7739f9fc6bbSPhilip Paeps New zic -R option 7749f9fc6bbSPhilip Paeps Vanguard form now uses %z. 7759f9fc6bbSPhilip Paeps Finish moving duplicate-since-1970 zones to 'backzone'. 7769f9fc6bbSPhilip Paeps New build option PACKRATLIST 7779f9fc6bbSPhilip Paeps New tailored_tarballs target, replacing rearguard_tarballs 7789f9fc6bbSPhilip Paeps 7799f9fc6bbSPhilip Paeps Changes to future timestamps 7809f9fc6bbSPhilip Paeps 7819f9fc6bbSPhilip Paeps Chile's 2022 DST start is delayed from September 4 to September 11. 7829f9fc6bbSPhilip Paeps (Thanks to Juan Correa.) 7839f9fc6bbSPhilip Paeps 7849f9fc6bbSPhilip Paeps Iran plans to stop observing DST permanently, after it falls back 7859f9fc6bbSPhilip Paeps on 2022-09-21. (Thanks to Ali Mirjamali.) 7869f9fc6bbSPhilip Paeps 7879f9fc6bbSPhilip Paeps Changes to past timestamps 7889f9fc6bbSPhilip Paeps 7899f9fc6bbSPhilip Paeps Finish moving to 'backzone' the location-based zones whose 7909f9fc6bbSPhilip Paeps timestamps since 1970 are duplicates; adjust links accordingly. 7919f9fc6bbSPhilip Paeps This change ordinarily affects only pre-1970 timestamps, and with 7929f9fc6bbSPhilip Paeps the new PACKRATLIST option it does not affect any timestamps. 7939f9fc6bbSPhilip Paeps In this round the affected zones are Antarctica/Vostok, 7949f9fc6bbSPhilip Paeps Asia/Brunei, Asia/Kuala_Lumpur, Atlantic/Reykjavik, 7959f9fc6bbSPhilip Paeps Europe/Amsterdam, Europe/Copenhagen, Europe/Luxembourg, 7969f9fc6bbSPhilip Paeps Europe/Monaco, Europe/Oslo, Europe/Stockholm, Indian/Christmas, 7979f9fc6bbSPhilip Paeps Indian/Cocos, Indian/Kerguelen, Indian/Mahe, Indian/Reunion, 7989f9fc6bbSPhilip Paeps Pacific/Chuuk, Pacific/Funafuti, Pacific/Majuro, Pacific/Pohnpei, 7999f9fc6bbSPhilip Paeps Pacific/Wake and Pacific/Wallis, and the affected links are 8009f9fc6bbSPhilip Paeps Arctic/Longyearbyen, Atlantic/Jan_Mayen, Iceland, Pacific/Ponape, 8019f9fc6bbSPhilip Paeps Pacific/Truk, and Pacific/Yap. 8029f9fc6bbSPhilip Paeps 8039f9fc6bbSPhilip Paeps From fall 1994 through fall 1995, Shanks wrote that Crimea's 8049f9fc6bbSPhilip Paeps DST transitions were at 02:00 standard time, not at 00:00. 8059f9fc6bbSPhilip Paeps (Thanks to Michael Deckers.) 8069f9fc6bbSPhilip Paeps 8079f9fc6bbSPhilip Paeps Iran adopted standard time in 1935, not 1946. In 1977 it observed 8089f9fc6bbSPhilip Paeps DST from 03-21 23:00 to 10-20 24:00; its 1978 transitions were on 8099f9fc6bbSPhilip Paeps 03-24 and 08-05, not 03-20 and 10-20; and its spring 1979 8109f9fc6bbSPhilip Paeps transition was on 05-27, not 03-21. 8119f9fc6bbSPhilip Paeps (Thanks to Roozbeh Pournader and Francis Santoni.) 8129f9fc6bbSPhilip Paeps 8139f9fc6bbSPhilip Paeps Chile's observance of -04 from 1946-08-29 through 1947-03-31 was 8149f9fc6bbSPhilip Paeps considered DST, not standard time. Santiago and environs had moved 8159f9fc6bbSPhilip Paeps their clocks back to rejoin the rest of mainland Chile; put this 8169f9fc6bbSPhilip Paeps change at the end of 1946-08-28. (Thanks to Michael Deckers.) 8179f9fc6bbSPhilip Paeps 8189f9fc6bbSPhilip Paeps Some old, small clock transitions have been removed, as people at 8199f9fc6bbSPhilip Paeps the time did not change their clocks. This affects Asia/Hong_Kong 8209f9fc6bbSPhilip Paeps in 1904, Asia/Ho_Chi_Minh in 1906, and Europe/Dublin in 1880. 8219f9fc6bbSPhilip Paeps 8229f9fc6bbSPhilip Paeps Changes to zone name 8239f9fc6bbSPhilip Paeps 8249f9fc6bbSPhilip Paeps Rename Europe/Kiev to Europe/Kyiv, as "Kyiv" is more common in 8259f9fc6bbSPhilip Paeps English now. Spelling of other names in Ukraine has not yet 8269f9fc6bbSPhilip Paeps demonstrably changed in common English practice so for now these 8279f9fc6bbSPhilip Paeps names retain old spellings, as in other countries (e.g., 8289f9fc6bbSPhilip Paeps Europe/Prague not "Praha", and Europe/Sofia not "Sofiya"). 8299f9fc6bbSPhilip Paeps 8309f9fc6bbSPhilip Paeps Changes to code 8319f9fc6bbSPhilip Paeps 8329f9fc6bbSPhilip Paeps zic has a new option '-R @N' to output explicit transitions < N. 8339f9fc6bbSPhilip Paeps (Need suggested by Almaz Mingaleev.) 8349f9fc6bbSPhilip Paeps 8359f9fc6bbSPhilip Paeps 'zic -r @N' no longer outputs bad data when N < first transition. 8369f9fc6bbSPhilip Paeps (Problem introduced in 2021d and reported by Peter Krefting.) 8379f9fc6bbSPhilip Paeps 8389f9fc6bbSPhilip Paeps zic now checks its input for NUL bytes and unterminated lines, and 8399f9fc6bbSPhilip Paeps now supports input line lengths up to 2048 (not 512) bytes. 8409f9fc6bbSPhilip Paeps 8419f9fc6bbSPhilip Paeps gmtime and related code now use the abbreviation "UTC" not "GMT". 8429f9fc6bbSPhilip Paeps POSIX is being revised to require this. 8439f9fc6bbSPhilip Paeps 8449f9fc6bbSPhilip Paeps When tzset and related functions set vestigial static variables 8459f9fc6bbSPhilip Paeps like tzname, they now prefer specified timestamps to unspecified ones. 8469f9fc6bbSPhilip Paeps (Problem reported by Almaz Mingaleev.) 8479f9fc6bbSPhilip Paeps 8489f9fc6bbSPhilip Paeps zic no longer complains "can't determine time zone abbreviation to 8499f9fc6bbSPhilip Paeps use just after until time" when a transition to a new standard 8505f33eb72SPhilip Paeps time occurs simultaneously with the first DST fallback transition. 8519f9fc6bbSPhilip Paeps 8529f9fc6bbSPhilip Paeps Changes to build procedure 8539f9fc6bbSPhilip Paeps 8549f9fc6bbSPhilip Paeps Source data in vanguard form now uses the %z notation, introduced 8559f9fc6bbSPhilip Paeps in release 2015f. For example, for America/Sao_Paulo vanguard 8569f9fc6bbSPhilip Paeps form contains the zone continuation line "-3:00 Brazil %z", which 8579f9fc6bbSPhilip Paeps is simpler and more reliable than the line "-3:00 Brazil -03/-02" 8589f9fc6bbSPhilip Paeps used in main and rearguard forms. The plan is for the main form 8599f9fc6bbSPhilip Paeps to use %z eventually; in the meantime maintainers of zi parsers 8609f9fc6bbSPhilip Paeps are encouraged to test the parsers on vanguard.zi. 8619f9fc6bbSPhilip Paeps 8629f9fc6bbSPhilip Paeps The Makefile has a new PACKRATLIST option to select a subset of 8639f9fc6bbSPhilip Paeps 'backzone'. For example, 'make PACKRATDATA=backzone 8649f9fc6bbSPhilip Paeps PACKRATLIST=zone.tab' now generates TZif files identical to those 8659f9fc6bbSPhilip Paeps of the global-tz project. 8669f9fc6bbSPhilip Paeps 8679f9fc6bbSPhilip Paeps The Makefile has a new tailored_tarballs target for generating 8689f9fc6bbSPhilip Paeps special-purpose tarballs. It generalizes and replaces the 8699f9fc6bbSPhilip Paeps rearguard_tarballs target and related targets and macros, which 8709f9fc6bbSPhilip Paeps are now obsolescent. 8719f9fc6bbSPhilip Paeps 8729f9fc6bbSPhilip Paeps 'make install' now defaults LOCALTIME to Factory not GMT, 8739f9fc6bbSPhilip Paeps which means the default abbreviation is now "-00" not "GMT". 8749f9fc6bbSPhilip Paeps 8759f9fc6bbSPhilip Paeps Remove the posix_packrat target, marked obsolescent in 2016a. 8769f9fc6bbSPhilip Paeps 8779f9fc6bbSPhilip Paeps 8788ea5af2bSPhilip PaepsRelease 2022a - 2022-03-15 23:02:01 -0700 8798ea5af2bSPhilip Paeps 8808ea5af2bSPhilip Paeps Briefly: 8818ea5af2bSPhilip Paeps Palestine will spring forward on 2022-03-27, not -03-26. 8828ea5af2bSPhilip Paeps zdump -v now outputs better failure indications. 8838ea5af2bSPhilip Paeps Bug fixes for code that reads corrupted TZif data. 8848ea5af2bSPhilip Paeps 8858ea5af2bSPhilip Paeps Changes to future timestamps 8868ea5af2bSPhilip Paeps 8878ea5af2bSPhilip Paeps Palestine will spring forward on 2022-03-27, not 2022-03-26. 8888ea5af2bSPhilip Paeps (Thanks to Heba Hamad.) Predict future transitions for first 8898ea5af2bSPhilip Paeps Sunday >= March 25. Additionally, predict fallbacks to be the first 8908ea5af2bSPhilip Paeps Friday on or after October 23, not October's last Friday, to be more 8918ea5af2bSPhilip Paeps consistent with recent practice. The first differing fallback 8928ea5af2bSPhilip Paeps prediction is on 2025-10-24, not 2025-10-31. 8938ea5af2bSPhilip Paeps 8948ea5af2bSPhilip Paeps Changes to past timestamps 8958ea5af2bSPhilip Paeps 8968ea5af2bSPhilip Paeps From 1992 through spring 1996, Ukraine's DST transitions were at 8978ea5af2bSPhilip Paeps 02:00 standard time, not at 01:00 UTC. (Thanks to Alois Treindl.) 8988ea5af2bSPhilip Paeps 8998ea5af2bSPhilip Paeps Chile's Santiago Mean Time and its LMT precursor have been adjusted 9008ea5af2bSPhilip Paeps eastward by 1 second to align with past and present law. 9018ea5af2bSPhilip Paeps 9028ea5af2bSPhilip Paeps Changes to commentary 9038ea5af2bSPhilip Paeps 9048ea5af2bSPhilip Paeps Add several references for Chile's 1946/1947 transitions, some of 9058ea5af2bSPhilip Paeps which only affected portions of the country. 9068ea5af2bSPhilip Paeps 9078ea5af2bSPhilip Paeps Changes to code 9088ea5af2bSPhilip Paeps 9098ea5af2bSPhilip Paeps Fix bug when mktime gets confused by truncated TZif files with 9108ea5af2bSPhilip Paeps unspecified local time. (Problem reported by Almaz Mingaleev.) 9118ea5af2bSPhilip Paeps 9128ea5af2bSPhilip Paeps Fix bug when 32-bit time_t code reads malformed 64-bit TZif data. 9138ea5af2bSPhilip Paeps (Problem reported by Christos Zoulas.) 9148ea5af2bSPhilip Paeps 9158ea5af2bSPhilip Paeps When reading a version 2 or later TZif file, the TZif reader now 9168ea5af2bSPhilip Paeps validates the version 1 header and data block only enough to skip 9178ea5af2bSPhilip Paeps over them, as recommended by RFC 8536 section 4. Also, the TZif 9188ea5af2bSPhilip Paeps reader no longer mistakenly attempts to parse a version 1 TZIf 9198ea5af2bSPhilip Paeps file header as a TZ string. 9208ea5af2bSPhilip Paeps 9218ea5af2bSPhilip Paeps zdump -v now outputs "(localtime failed)" and "(gmtime failed)" 9228ea5af2bSPhilip Paeps when local time and UT cannot be determined for a timestamp. 9238ea5af2bSPhilip Paeps 9248ea5af2bSPhilip Paeps Changes to build procedure 9258ea5af2bSPhilip Paeps 9268ea5af2bSPhilip Paeps Distribution tarballs now use standard POSIX.1-1988 ustar format 9278ea5af2bSPhilip Paeps instead of GNU format. Although the formats are almost identical 9288ea5af2bSPhilip Paeps for these tarballs, ustar headers' magic fields contain "ustar" 9298ea5af2bSPhilip Paeps instead of "ustar ", and their version fields contain "00" instead 9308ea5af2bSPhilip Paeps of " ". The two formats are planned to diverge more significantly 9318ea5af2bSPhilip Paeps for tzdb releases after 2242-03-16 12:56:31 UTC, when the ustar 9328ea5af2bSPhilip Paeps format becomes obsolete and the tarballs switch to pax format, an 9338ea5af2bSPhilip Paeps extension of ustar. For details about these formats, please see 9348ea5af2bSPhilip Paeps "pax - portable archive interchange", IEEE Std 1003.1-2017, 9358ea5af2bSPhilip Paeps <https://pubs.opengroup.org/onlinepubs/9699919799/utilities/pax.html#tag_20_92_13>. 9368ea5af2bSPhilip Paeps 9378ea5af2bSPhilip Paeps 938b02df232SPhilip PaepsRelease 2021e - 2021-10-21 18:41:00 -0700 939b02df232SPhilip Paeps 940b02df232SPhilip Paeps Changes to future timestamps 941b02df232SPhilip Paeps 942b02df232SPhilip Paeps Palestine will fall back 10-29 (not 10-30) at 01:00. 943b02df232SPhilip Paeps (Thanks to P Chan and Heba Hemad.) 944b02df232SPhilip Paeps 945b02df232SPhilip Paeps 9466b7d3b4dSPhilip PaepsRelease 2021d - 2021-10-15 13:48:18 -0700 9476b7d3b4dSPhilip Paeps 9486b7d3b4dSPhilip Paeps Briefly: 9496b7d3b4dSPhilip Paeps Fiji suspends DST for the 2021/2022 season. 9506b7d3b4dSPhilip Paeps 'zic -r' marks unspecified timestamps with "-00". 9516b7d3b4dSPhilip Paeps 9526b7d3b4dSPhilip Paeps Changes to future timestamps 9536b7d3b4dSPhilip Paeps 9546b7d3b4dSPhilip Paeps Fiji will suspend observance of DST for the 2021/2022 season. 9556b7d3b4dSPhilip Paeps Assume for now that it will return next year. (Thanks to Jashneel 9566b7d3b4dSPhilip Paeps Kumar and P Chan.) 9576b7d3b4dSPhilip Paeps 9586b7d3b4dSPhilip Paeps Changes to code 9596b7d3b4dSPhilip Paeps 9606b7d3b4dSPhilip Paeps 'zic -r' now uses "-00" time zone abbreviations for intervals 9616b7d3b4dSPhilip Paeps with UT offsets that are unspecified due to -r truncation. 9626b7d3b4dSPhilip Paeps This implements a change in draft Internet RFC 8536bis. 9636b7d3b4dSPhilip Paeps 9646b7d3b4dSPhilip Paeps 96593d120dbSPhilip PaepsRelease 2021c - 2021-10-01 14:21:49 -0700 96693d120dbSPhilip Paeps 96793d120dbSPhilip Paeps Briefly: 96893d120dbSPhilip Paeps Revert most 2021b changes to 'backward'. 96993d120dbSPhilip Paeps Fix 'zic -b fat' bug in pre-1970 32-bit data. 97093d120dbSPhilip Paeps Fix two Link line typos. 97193d120dbSPhilip Paeps Distribute SECURITY file. 97293d120dbSPhilip Paeps 97393d120dbSPhilip Paeps This release is intended as a bugfix release, to fix compatibility 97493d120dbSPhilip Paeps problems and typos reported since 2021b was released. 97593d120dbSPhilip Paeps 97693d120dbSPhilip Paeps Changes to Link directives 97793d120dbSPhilip Paeps 97893d120dbSPhilip Paeps Revert almost all of 2021b's changes to the 'backward' file, 97993d120dbSPhilip Paeps by moving Link directives back to where they were in 2021a. 98093d120dbSPhilip Paeps Although 'zic' doesn't care which source file contains a Link 98193d120dbSPhilip Paeps directive, some downstream uses ran into trouble with the move. 98293d120dbSPhilip Paeps (Problem reported by Stephen Colebourne for Joda-Time.) 98393d120dbSPhilip Paeps 98493d120dbSPhilip Paeps Fix typo that linked Atlantic/Jan_Mayen to the wrong location 98593d120dbSPhilip Paeps (problem reported by Chris Walton). 98693d120dbSPhilip Paeps 98793d120dbSPhilip Paeps Fix 'backzone' typo that linked America/Virgin to the wrong 98893d120dbSPhilip Paeps location (problem reported by Michael Deckers). 98993d120dbSPhilip Paeps 99093d120dbSPhilip Paeps Changes to code 99193d120dbSPhilip Paeps 99293d120dbSPhilip Paeps Fix a bug in 'zic -b fat' that caused old timestamps to be 99393d120dbSPhilip Paeps mishandled in 32-bit-only readers (problem reported by Daniel 99493d120dbSPhilip Paeps Fischer). 99593d120dbSPhilip Paeps 99693d120dbSPhilip Paeps Changes to documentation 99793d120dbSPhilip Paeps 99893d120dbSPhilip Paeps Distribute the SECURITY file (problem reported by Andreas Radke). 99993d120dbSPhilip Paeps 100093d120dbSPhilip Paeps 100194c2d487SPhilip PaepsRelease 2021b - 2021-09-24 16:23:00 -0700 100294c2d487SPhilip Paeps 100394c2d487SPhilip Paeps Briefly: 100494c2d487SPhilip Paeps Jordan now starts DST on February's last Thursday. 100594c2d487SPhilip Paeps Samoa no longer observes DST. 100694c2d487SPhilip Paeps Merge more location-based Zones whose timestamps agree since 1970. 100794c2d487SPhilip Paeps Move some backward-compatibility links to 'backward'. 100894c2d487SPhilip Paeps Rename Pacific/Enderbury to Pacific/Kanton. 100994c2d487SPhilip Paeps Correct many pre-1993 transitions in Malawi, Portugal, etc. 101094c2d487SPhilip Paeps zic now creates each output file or link atomically. 101194c2d487SPhilip Paeps zic -L no longer omits the POSIX TZ string in its output. 101294c2d487SPhilip Paeps zic fixes for truncation and leap second table expiration. 101394c2d487SPhilip Paeps zic now follows POSIX for TZ strings using all-year DST. 101494c2d487SPhilip Paeps Fix some localtime crashes and bugs in obscure cases. 101594c2d487SPhilip Paeps zdump -v now outputs more-useful boundary cases. 101694c2d487SPhilip Paeps tzfile.5 better matches a draft successor to RFC 8536. 101794c2d487SPhilip Paeps A new file SECURITY. 101894c2d487SPhilip Paeps 101994c2d487SPhilip Paeps This release is prompted by recent announcements by Jordan and Samoa. 102094c2d487SPhilip Paeps It incorporates many other changes that had accumulated since 2021a. 102194c2d487SPhilip Paeps However, it omits most proposed changes that merged all Zones 102294c2d487SPhilip Paeps agreeing since 1970, as concerns were raised about doing too many of 102394c2d487SPhilip Paeps these changes at once. It does keeps some of these changes in the 102494c2d487SPhilip Paeps interest of making tzdb more equitable one step at a time; see 102594c2d487SPhilip Paeps "Merge more location-based Zones" below. 102694c2d487SPhilip Paeps 102794c2d487SPhilip Paeps Changes to future timestamps 102894c2d487SPhilip Paeps 102994c2d487SPhilip Paeps Jordan now starts DST on February's last Thursday. 103094c2d487SPhilip Paeps (Thanks to Steffen Thorsen.) 103194c2d487SPhilip Paeps 103294c2d487SPhilip Paeps Samoa no longer observes DST. (Thanks to Geoffrey D. Bennett.) 103394c2d487SPhilip Paeps 103494c2d487SPhilip Paeps Changes to zone name 103594c2d487SPhilip Paeps 103694c2d487SPhilip Paeps Rename Pacific/Enderbury to Pacific/Kanton. When we added 103794c2d487SPhilip Paeps Enderbury in 1993, we did not know that it is uninhabited and that 103894c2d487SPhilip Paeps Kanton (population two dozen) is the only inhabited location in 10399f9fc6bbSPhilip Paeps that timezone. The old name is now a backward-compatibility link. 104094c2d487SPhilip Paeps 104194c2d487SPhilip Paeps Changes to past timestamps 104294c2d487SPhilip Paeps 104394c2d487SPhilip Paeps Correct many pre-1993 transitions, fixing entries originally 104494c2d487SPhilip Paeps derived from Shanks, Whitman, and Mundell. The fixes include: 104594c2d487SPhilip Paeps - Barbados: standard time was introduced in 1911, not 1932; and 104694c2d487SPhilip Paeps DST was observed in 1942-1944 104794c2d487SPhilip Paeps - Cook Islands: In 1899 they switched from east to west of GMT, 104894c2d487SPhilip Paeps celebrating Christmas for two days. They (and Niue) switched 104994c2d487SPhilip Paeps to standard time in 1952, not 1901. 105094c2d487SPhilip Paeps - Guyana: corrected LMT for Georgetown; the introduction of 105194c2d487SPhilip Paeps standard time in 1911, not 1915; and corrections to 1975 and 105294c2d487SPhilip Paeps 1992 transitions 105394c2d487SPhilip Paeps - Kanton: uninhabited before 1937-08-31 105494c2d487SPhilip Paeps - Niue: only observed -11:20 from 1952 through 1964, then went to 105594c2d487SPhilip Paeps -11 instead of -11:30 105694c2d487SPhilip Paeps - Portugal: DST was observed in 1950 105794c2d487SPhilip Paeps - Tonga: corrected LMT; the introduction of standard time in 1945, 105894c2d487SPhilip Paeps not 1901; and corrections to the transition from +12:20 to +13 105994c2d487SPhilip Paeps in 1961, not 1941 106094c2d487SPhilip Paeps Additional fixes to entries in the 'backzone' file include: 106194c2d487SPhilip Paeps - Enderbury: inhabited only 1860/1885 and 1938-03-06/1942-02-09 106294c2d487SPhilip Paeps - The Gambia: 1933 and 1942 transitions 106394c2d487SPhilip Paeps - Malawi: several 1911 through 1925 transitions 106494c2d487SPhilip Paeps - Sierra Leone: several 1913 through 1941 transitions, and DST 106594c2d487SPhilip Paeps was NOT observed in 1957 through 1962 106694c2d487SPhilip Paeps (Thanks to P Chan, Michael Deckers, Alexander Krivenyshev and 106794c2d487SPhilip Paeps Alois Treindl.) 106894c2d487SPhilip Paeps 106994c2d487SPhilip Paeps Merge more location-based Zones whose timestamps agree since 1970, 107094c2d487SPhilip Paeps as pre-1970 timestamps are out of scope. This is part of a 107194c2d487SPhilip Paeps process that has been ongoing since 2013. This does not affect 107294c2d487SPhilip Paeps post-1970 timestamps, and timezone historians who build with 'make 107394c2d487SPhilip Paeps PACKRATDATA=backzone' should see no changes to pre-1970 timestamps. 107494c2d487SPhilip Paeps When merging, keep the most-populous location's data, and move 107594c2d487SPhilip Paeps data for other locations to 'backzone' with a backward 107694c2d487SPhilip Paeps link in 'backward'. For example, move America/Creston data to 107794c2d487SPhilip Paeps 'backzone' with a link in 'backward' from America/Phoenix because 107894c2d487SPhilip Paeps the two timezones' timestamps agree since 1970; this change 107994c2d487SPhilip Paeps affects some pre-1968 timestamps in America/Creston because 108094c2d487SPhilip Paeps Creston and Phoenix disagreed before 1968. The affected Zones 108194c2d487SPhilip Paeps are Africa/Accra, America/Atikokan, America/Blanc-Sablon, 108294c2d487SPhilip Paeps America/Creston, America/Curacao, America/Nassau, 108394c2d487SPhilip Paeps America/Port_of_Spain, Antarctica/DumontDUrville, and 108494c2d487SPhilip Paeps Antarctica/Syowa. 108594c2d487SPhilip Paeps 108694c2d487SPhilip Paeps Changes to maintenance procedure 108794c2d487SPhilip Paeps 108894c2d487SPhilip Paeps The new file SECURITY covers how to report security-related bugs. 108994c2d487SPhilip Paeps 109094c2d487SPhilip Paeps Several backward-compatibility links have been moved to the 109194c2d487SPhilip Paeps 'backward' file. These links, which range from Africa/Addis_Ababa 109294c2d487SPhilip Paeps to Pacific/Saipan, are only for compatibility with now-obsolete 109394c2d487SPhilip Paeps guidelines suggesting an entry for every ISO 3166 code. 109494c2d487SPhilip Paeps The intercontinental convenience links Asia/Istanbul and 109594c2d487SPhilip Paeps Europe/Nicosia have also been moved to 'backward'. 109694c2d487SPhilip Paeps 109794c2d487SPhilip Paeps Changes to code 109894c2d487SPhilip Paeps 109994c2d487SPhilip Paeps zic now creates each output file or link atomically, 110094c2d487SPhilip Paeps possibly by creating a temporary file and then renaming it. 110194c2d487SPhilip Paeps This avoids races where a TZ setting would temporarily stop 110294c2d487SPhilip Paeps working while zic was installing a replacement file or link. 110394c2d487SPhilip Paeps 110494c2d487SPhilip Paeps zic -L no longer omits the POSIX TZ string in its output. 110594c2d487SPhilip Paeps Starting with 2020a, zic -L truncated its output according to the 110694c2d487SPhilip Paeps "Expires" directive or "#expires" comment in the leapseconds file. 110794c2d487SPhilip Paeps The resulting TZif files omitted daylight saving transitions after 1108259e2ad7SPhilip Paeps the leap second table expired, which led to far less accurate 110994c2d487SPhilip Paeps predictions of times after the expiry. Although future timestamps 111094c2d487SPhilip Paeps cannot be converted accurately in the presence of leap seconds, it 111194c2d487SPhilip Paeps is more accurate to convert near-future timestamps with a few 111294c2d487SPhilip Paeps seconds error than with an hour error, so zic -L no longer 111394c2d487SPhilip Paeps truncates output in this way. 111494c2d487SPhilip Paeps 111594c2d487SPhilip Paeps Instead, when zic -L is given the "Expires" directive, it now 111694c2d487SPhilip Paeps outputs the expiration by appending a no-change entry to the leap 111794c2d487SPhilip Paeps second table. Although this should work well with most TZif 111894c2d487SPhilip Paeps readers, it does not conform to Internet RFC 8536 and some pickier 111994c2d487SPhilip Paeps clients (including tzdb 2017c through 2021a) reject it, so 112094c2d487SPhilip Paeps "Expires" directives are currently disabled by default. To enable 112194c2d487SPhilip Paeps them, set the EXPIRES_LINE Makefile variable. If a TZif file uses 112294c2d487SPhilip Paeps this new feature it is marked with a new TZif version number 4, 112394c2d487SPhilip Paeps a format intended to be documented in a successor to RFC 8536. 1124eebb9c2cSPhilip Paeps The old-format "#expires" comments are now treated solely as 1125eebb9c2cSPhilip Paeps comments and have no effect on the TZif files. 112694c2d487SPhilip Paeps 112794c2d487SPhilip Paeps zic -L LEAPFILE -r @LO no longer generates an invalid TZif file 112894c2d487SPhilip Paeps that omits leap second information for the range LO..B when LO 112994c2d487SPhilip Paeps falls between two leap seconds A and B. Instead, it generates a 1130259e2ad7SPhilip Paeps TZif version 4 file that represents the previously missing 113194c2d487SPhilip Paeps information. 113294c2d487SPhilip Paeps 113394c2d487SPhilip Paeps The TZif reader now allows the leap second table to begin with a 113494c2d487SPhilip Paeps correction other than -1 or +1, and to contain adjacent 113594c2d487SPhilip Paeps transitions with equal corrections. This supports TZif version 4. 113694c2d487SPhilip Paeps 113794c2d487SPhilip Paeps The TZif reader now lets leap seconds occur less than 28 days 113894c2d487SPhilip Paeps apart. This supports possible future TZif extensions. 113994c2d487SPhilip Paeps 114094c2d487SPhilip Paeps Fix bug that caused 'localtime' etc. to crash when TZ was 114194c2d487SPhilip Paeps set to a all-year DST string like "EST5EDT4,0/0,J365/25" that does 114294c2d487SPhilip Paeps not conform to POSIX but does conform to Internet RFC 8536. 114394c2d487SPhilip Paeps 114494c2d487SPhilip Paeps Fix another bug that caused 'localtime' etc. to crash when TZ was 114594c2d487SPhilip Paeps set to a POSIX-conforming but unusual TZ string like 114694c2d487SPhilip Paeps "EST5EDT4,0/0,J365/0", where almost all the year is DST. 114794c2d487SPhilip Paeps 114894c2d487SPhilip Paeps Fix yet another bug that caused 'localtime' etc. to mishandle slim 114994c2d487SPhilip Paeps TZif files containing leap seconds after the last explicit 115094c2d487SPhilip Paeps transition in the table, or when handling far-future timestamps 115194c2d487SPhilip Paeps in slim TZif files lacking leap seconds. 115294c2d487SPhilip Paeps 115394c2d487SPhilip Paeps Fix localtime misbehavior involving positive leap seconds. 115494c2d487SPhilip Paeps This change affects only behavior for "right" system time, 115594c2d487SPhilip Paeps which contains leap seconds, and only if the UT offset is 115694c2d487SPhilip Paeps not a multiple of 60 seconds when a positive leap second occurs. 115794c2d487SPhilip Paeps (No such timezone exists in tzdb, luckily.) Without the fix, 115894c2d487SPhilip Paeps the timestamp was ambiguous during a positive leap second. 115994c2d487SPhilip Paeps With the fix, any seconds occurring after a positive leap second 116094c2d487SPhilip Paeps and within the same localtime minute are counted through 60, not 116194c2d487SPhilip Paeps through 59; their UT offset (tm_gmtoff) is the same as before. 116294c2d487SPhilip Paeps Here is how the fix affects timestamps in a timezone with UT 116394c2d487SPhilip Paeps offset +01:23:45 (5025 seconds) and with a positive leap second at 116494c2d487SPhilip Paeps 1972-06-30 23:59:60 UTC (78796800): 116594c2d487SPhilip Paeps 116694c2d487SPhilip Paeps time_t without the fix with the fix 116794c2d487SPhilip Paeps 78796800 1972-07-01 01:23:45 1972-07-01 01:23:45 (leap second) 116894c2d487SPhilip Paeps 78796801 1972-07-01 01:23:45 1972-07-01 01:23:46 116994c2d487SPhilip Paeps ... 117094c2d487SPhilip Paeps 78796815 1972-07-01 01:23:59 1972-07-01 01:23:60 117194c2d487SPhilip Paeps 78796816 1972-07-01 01:24:00 1972-07-01 01:24:00 117294c2d487SPhilip Paeps 117394c2d487SPhilip Paeps Fix an unlikely bug that caused 'localtime' etc. to misbehave if 117494c2d487SPhilip Paeps civil time changes a few seconds before time_t wraps around, when 117594c2d487SPhilip Paeps leap seconds are enabled. 117694c2d487SPhilip Paeps 117794c2d487SPhilip Paeps Fix bug in zic -r; in some cases, the dummy time type after the 117894c2d487SPhilip Paeps last time transition disagreed with the TZ string, contrary to 117994c2d487SPhilip Paeps Internet RFC 8563 section 3.3. 118094c2d487SPhilip Paeps 118194c2d487SPhilip Paeps Fix a bug with 'zic -r @X' when X is a negative leap second that 118294c2d487SPhilip Paeps has a nonnegative correction. Without the fix, the output file 118394c2d487SPhilip Paeps was truncated so that X appeared to be a positive leap second. 1184259e2ad7SPhilip Paeps Fix a similar, even less likely bug when truncating at a positive 118594c2d487SPhilip Paeps leap second that has a nonpositive correction. 118694c2d487SPhilip Paeps 118794c2d487SPhilip Paeps zic -r now reports an error if given rolling leap seconds, as this 118894c2d487SPhilip Paeps usage has never generally worked and is evidently unused. 118994c2d487SPhilip Paeps 119094c2d487SPhilip Paeps zic now generates a POSIX-conforming TZ string for TZif files 119194c2d487SPhilip Paeps where all-year DST is predicted for the indefinite future. 119294c2d487SPhilip Paeps For example, for all-year Eastern Daylight Time, zic now generates 119394c2d487SPhilip Paeps "XXX3EDT4,0/0,J365/23" where it previously generated 119494c2d487SPhilip Paeps "EST5EDT,0/0,J365/25" or "". (Thanks to Michael Deckers for 119594c2d487SPhilip Paeps noting the possibility of POSIX conformance.) 119694c2d487SPhilip Paeps 119794c2d487SPhilip Paeps zic.c no longer requires sys/wait.h (thanks to spazmodius for 119894c2d487SPhilip Paeps noting it wasn't needed). 119994c2d487SPhilip Paeps 120094c2d487SPhilip Paeps When reading slim TZif files, zdump no longer mishandles leap 120194c2d487SPhilip Paeps seconds on the rare platforms where time_t counts leap seconds, 120294c2d487SPhilip Paeps fixing a bug introduced in 2014g. 120394c2d487SPhilip Paeps 120494c2d487SPhilip Paeps zdump -v now outputs timestamps at boundaries of what localtime 1205259e2ad7SPhilip Paeps and gmtime can represent, instead of the less useful timestamps 120694c2d487SPhilip Paeps one day after the minimum and one day before the maximum. 120794c2d487SPhilip Paeps (Thanks to Arthur David Olson for prototype code, and to Manuela 120894c2d487SPhilip Paeps Friedrich for debugging help.) 120994c2d487SPhilip Paeps 121094c2d487SPhilip Paeps zdump's -c and -t options are now consistently inclusive for the 121194c2d487SPhilip Paeps lower time bound and exclusive for the upper. Formerly they were 121294c2d487SPhilip Paeps inconsistent. (Confusion noted by Martin Burnicki.) 121394c2d487SPhilip Paeps 121494c2d487SPhilip Paeps Changes to build procedure 121594c2d487SPhilip Paeps 121694c2d487SPhilip Paeps You can now compile with -DHAVE_MALLOC_ERRNO=0 to port to 121794c2d487SPhilip Paeps non-POSIX hosts where malloc doesn't set errno. 121894c2d487SPhilip Paeps (Problem reported by Jan Engelhardt.) 121994c2d487SPhilip Paeps 122094c2d487SPhilip Paeps Changes to documentation 122194c2d487SPhilip Paeps 122294c2d487SPhilip Paeps tzfile.5 better matches a draft successor to RFC 8536 122394c2d487SPhilip Paeps <https://datatracker.ietf.org/doc/draft-murchison-rfc8536bis/01/>. 122494c2d487SPhilip Paeps 122594c2d487SPhilip Paeps 12268c5bef2eSPhilip PaepsRelease 2021a - 2021-01-24 10:54:57 -0800 12278c5bef2eSPhilip Paeps 12288c5bef2eSPhilip Paeps Changes to future timestamps 12298c5bef2eSPhilip Paeps 12308c5bef2eSPhilip Paeps South Sudan changes from +03 to +02 on 2021-02-01 at 00:00. 12318c5bef2eSPhilip Paeps (Thanks to Steffen Thorsen.) 12328c5bef2eSPhilip Paeps 12338c5bef2eSPhilip Paeps 1234e35a01eeSPhilip PaepsRelease 2020f - 2020-12-29 00:17:46 -0800 1235e35a01eeSPhilip Paeps 1236e35a01eeSPhilip Paeps Change to build procedure 1237e35a01eeSPhilip Paeps 1238e35a01eeSPhilip Paeps 'make rearguard_tarballs' no longer generates a bad rearguard.zi, 1239e35a01eeSPhilip Paeps fixing a 2020e bug. (Problem reported by Deborah Goldsmith.) 1240e35a01eeSPhilip Paeps 1241e35a01eeSPhilip Paeps 1242dc505d53SPhilip PaepsRelease 2020e - 2020-12-22 15:14:34 -0800 1243dc505d53SPhilip Paeps 1244dc505d53SPhilip Paeps Briefly: 1245dc505d53SPhilip Paeps Volgograd switches to Moscow time on 2020-12-27 at 02:00. 1246dc505d53SPhilip Paeps 1247dc505d53SPhilip Paeps Changes to future timestamps 1248dc505d53SPhilip Paeps 1249dc505d53SPhilip Paeps Volgograd changes time zone from +04 to +03 on 2020-12-27 at 02:00. 1250dc505d53SPhilip Paeps (Thanks to Alexander Krivenyshev and Stepan Golosunov.) 1251dc505d53SPhilip Paeps 1252dc505d53SPhilip Paeps Changes to past timestamps 1253dc505d53SPhilip Paeps 1254dc505d53SPhilip Paeps Correct many pre-1986 transitions, fixing entries originally 1255dc505d53SPhilip Paeps derived from Shanks. The fixes include: 1256dc505d53SPhilip Paeps - Australia: several 1917 through 1971 transitions 125794c2d487SPhilip Paeps - The Bahamas: several 1941 through 1945 transitions 1258dc505d53SPhilip Paeps - Bermuda: several 1917 through 1956 transitions 1259dc505d53SPhilip Paeps - Belize: several 1942 through 1968 transitions 1260dc505d53SPhilip Paeps - Ghana: several 1915 through 1956 transitions 1261dc505d53SPhilip Paeps - Israel and Palestine: several 1940 through 1985 transitions 1262dc505d53SPhilip Paeps - Kenya and adjacent: several 1908 through 1960 transitions 1263dc505d53SPhilip Paeps - Nigeria and adjacent: correcting LMT in Lagos, and several 1905 1264dc505d53SPhilip Paeps through 1919 transitions 1265dc505d53SPhilip Paeps - Seychelles: the introduction of standard time in 1907, not 1906 1266dc505d53SPhilip Paeps - Vanuatu: DST in 1973-1974, and a corrected 1984 transition 1267dc505d53SPhilip Paeps (Thanks to P Chan.) 1268dc505d53SPhilip Paeps 1269dc505d53SPhilip Paeps Because of the Australia change, Australia/Currie (King Island) is 1270dc505d53SPhilip Paeps no longer needed, as it is identical to Australia/Hobart for all 1271dc505d53SPhilip Paeps timestamps since 1970 and was therefore created by mistake. 1272dc505d53SPhilip Paeps Australia/Currie has been moved to the 'backward' file and its 1273dc505d53SPhilip Paeps corrected data moved to the 'backzone' file. 1274dc505d53SPhilip Paeps 1275dc505d53SPhilip Paeps Changes to past time zone abbreviations and DST flags 1276dc505d53SPhilip Paeps 1277dc505d53SPhilip Paeps To better match legislation in Turks and Caicos, the 2015 shift to 1278dc505d53SPhilip Paeps year-round observance of -04 is now modeled as AST throughout before 1279dc505d53SPhilip Paeps returning to Eastern Time with US DST in 2018, rather than as 1280dc505d53SPhilip Paeps maintaining EDT until 2015-11-01. (Thanks to P Chan.) 1281dc505d53SPhilip Paeps 1282dc505d53SPhilip Paeps Changes to documentation 1283dc505d53SPhilip Paeps 1284dc505d53SPhilip Paeps The zic man page now documents zic's coalescing of transitions 1285dc505d53SPhilip Paeps when a zone falls back just before DST springs forward. 1286dc505d53SPhilip Paeps 1287dc505d53SPhilip Paeps 12883611c2d8SPhilip PaepsRelease 2020d - 2020-10-21 11:24:13 -0700 12893611c2d8SPhilip Paeps 12903611c2d8SPhilip Paeps Briefly: 12913611c2d8SPhilip Paeps Palestine ends DST earlier than predicted, on 2020-10-24. 12923611c2d8SPhilip Paeps 12933611c2d8SPhilip Paeps Changes to past and future timestamps 12943611c2d8SPhilip Paeps 12953611c2d8SPhilip Paeps Palestine ends DST on 2020-10-24 at 01:00, instead of 2020-10-31 12963611c2d8SPhilip Paeps as previously predicted (thanks to Sharef Mustafa.) Its 12973611c2d8SPhilip Paeps 2019-10-26 fall-back was at 00:00, not 01:00 (thanks to Steffen 12983611c2d8SPhilip Paeps Thorsen.) Its 2015-10-23 transition was at 01:00 not 00:00, and 12993611c2d8SPhilip Paeps its spring 2020 transition was on March 28 at 00:00, not March 27 13003611c2d8SPhilip Paeps (thanks to Pierre Cashon.) This affects Asia/Gaza and 13013611c2d8SPhilip Paeps Asia/Hebron. Assume future spring and fall transitions will be on 13023611c2d8SPhilip Paeps the Saturday preceding the last Sunday of March and October, 13033611c2d8SPhilip Paeps respectively. 13043611c2d8SPhilip Paeps 13053611c2d8SPhilip Paeps 1306e7e2d659SPhilip PaepsRelease 2020c - 2020-10-16 11:15:53 -0700 1307e7e2d659SPhilip Paeps 1308e7e2d659SPhilip Paeps Briefly: 1309e7e2d659SPhilip Paeps Fiji starts DST later than usual, on 2020-12-20. 1310e7e2d659SPhilip Paeps 1311e7e2d659SPhilip Paeps Changes to future timestamps 1312e7e2d659SPhilip Paeps 1313e7e2d659SPhilip Paeps Fiji will start DST on 2020-12-20, instead of 2020-11-08 as 1314e7e2d659SPhilip Paeps previously predicted. DST will still end on 2021-01-17. 1315e7e2d659SPhilip Paeps (Thanks to Raymond Kumar and Alan Mintz.) Assume for now that 1316e7e2d659SPhilip Paeps the later-than-usual start date is a one-time departure from the 1317e7e2d659SPhilip Paeps recent pattern. 1318e7e2d659SPhilip Paeps 1319e7e2d659SPhilip Paeps Changes to build procedure 1320e7e2d659SPhilip Paeps 1321e7e2d659SPhilip Paeps Rearguard tarballs now contain an empty file pacificnew. 1322e7e2d659SPhilip Paeps Some older downstream software expects this file to exist. 1323e7e2d659SPhilip Paeps (Problem reported by Mike Cullinan.) 1324e7e2d659SPhilip Paeps 1325e7e2d659SPhilip Paeps 132612a899b6SPhilip PaepsRelease 2020b - 2020-10-06 18:35:04 -0700 132712a899b6SPhilip Paeps 132812a899b6SPhilip Paeps Briefly: 132912a899b6SPhilip Paeps Revised predictions for Morocco's changes starting in 2023. 133012a899b6SPhilip Paeps Canada's Yukon changes to -07 on 2020-11-01, not 2020-03-08. 133112a899b6SPhilip Paeps Macquarie Island has stayed in sync with Tasmania since 2011. 133212a899b6SPhilip Paeps Casey, Antarctica is at +08 in winter and +11 in summer. 133312a899b6SPhilip Paeps zic no longer supports -y, nor the TYPE field of Rules. 133412a899b6SPhilip Paeps 133512a899b6SPhilip Paeps Changes to future timestamps 133612a899b6SPhilip Paeps 133712a899b6SPhilip Paeps Morocco's spring-forward after Ramadan is now predicted to occur 133812a899b6SPhilip Paeps no sooner than two days after Ramadan, instead of one day. 133912a899b6SPhilip Paeps (Thanks to Milamber.) The first altered prediction is for 2023, 134012a899b6SPhilip Paeps now predicted to spring-forward on April 30 instead of April 23. 134112a899b6SPhilip Paeps 134212a899b6SPhilip Paeps Changes to past and future timestamps 134312a899b6SPhilip Paeps 134412a899b6SPhilip Paeps Casey Station, Antarctica has been using +08 in winter and +11 in 134512a899b6SPhilip Paeps summer since 2018. The most recent transition from +08 to +11 was 134612a899b6SPhilip Paeps 2020-10-04 00:01. Also, Macquarie Island has been staying in 134712a899b6SPhilip Paeps sync with Tasmania since 2011. (Thanks to Steffen Thorsen.) 134812a899b6SPhilip Paeps 134912a899b6SPhilip Paeps Changes to past and future time zone abbreviations and DST flags 135012a899b6SPhilip Paeps 135112a899b6SPhilip Paeps Canada's Yukon, represented by America/Whitehorse and 135212a899b6SPhilip Paeps America/Dawson, changes its time zone rules from -08/-07 to 135312a899b6SPhilip Paeps permanent -07 on 2020-11-01, not on 2020-03-08 as 2020a had it. 135412a899b6SPhilip Paeps This change affects only the time zone abbreviation (MST vs PDT) 135512a899b6SPhilip Paeps and daylight saving flag for the period between the two dates. 135612a899b6SPhilip Paeps (Thanks to Andrew G. Smith.) 135712a899b6SPhilip Paeps 135812a899b6SPhilip Paeps Changes to past timestamps 135912a899b6SPhilip Paeps 136012a899b6SPhilip Paeps Correct several transitions for Hungary for 1918/1983. 136112a899b6SPhilip Paeps For example, the 1983-09-25 fall-back was at 01:00, not 03:00. 136212a899b6SPhilip Paeps (Thanks to Géza Nyáry.) Also, the 1890 transition to standard 136312a899b6SPhilip Paeps time was on 11-01, not 10-01 (thanks to Michael Deckers). 136412a899b6SPhilip Paeps 136512a899b6SPhilip Paeps The 1891 French transition was on March 16, not March 15. The 136612a899b6SPhilip Paeps 1911-03-11 French transition was at midnight, not a minute later. 136712a899b6SPhilip Paeps Monaco's transitions were on 1892-06-01 and 1911-03-29, not 136812a899b6SPhilip Paeps 1891-03-15 and 1911-03-11. (Thanks to Michael Deckers.) 136912a899b6SPhilip Paeps 137012a899b6SPhilip Paeps Changes to code 137112a899b6SPhilip Paeps 137212a899b6SPhilip Paeps Support for zic's long-obsolete '-y YEARISTYPE' option has been 137312a899b6SPhilip Paeps removed and, with it, so has support for the TYPE field in Rule 137412a899b6SPhilip Paeps lines, which is now reserved for compatibility with earlier zic. 137512a899b6SPhilip Paeps These features were previously deprecated in release 2015f. 137612a899b6SPhilip Paeps (Thanks to Tim Parenti.) 137712a899b6SPhilip Paeps 137812a899b6SPhilip Paeps zic now defaults to '-b slim' instead of to '-b fat'. 137912a899b6SPhilip Paeps 138012a899b6SPhilip Paeps zic's new '-l -' and '-p -' options uninstall any existing 138112a899b6SPhilip Paeps localtime and posixrules files, respectively. 138212a899b6SPhilip Paeps 138312a899b6SPhilip Paeps The undocumented and ineffective tzsetwall function has been 138412a899b6SPhilip Paeps removed. 138512a899b6SPhilip Paeps 138612a899b6SPhilip Paeps Changes to build procedure 138712a899b6SPhilip Paeps 138812a899b6SPhilip Paeps The Makefile now defaults POSIXRULES to '-', so the posixrules 138912a899b6SPhilip Paeps feature (obsolete as of 2019b) is no longer installed by default. 139012a899b6SPhilip Paeps 139112a899b6SPhilip Paeps Changes to documentation and commentary 139212a899b6SPhilip Paeps 139312a899b6SPhilip Paeps The long-obsolete files pacificnew, systemv, and yearistype.sh have 139412a899b6SPhilip Paeps been removed from the distribution. (Thanks to Tim Parenti.) 139512a899b6SPhilip Paeps 139612a899b6SPhilip Paeps 1397dd5f96c4SPhilip PaepsRelease 2020a - 2020-04-23 16:03:47 -0700 1398dd5f96c4SPhilip Paeps 1399dd5f96c4SPhilip Paeps Briefly: 1400dd5f96c4SPhilip Paeps Morocco springs forward on 2020-05-31, not 2020-05-24. 1401dd5f96c4SPhilip Paeps Canada's Yukon advanced to -07 year-round on 2020-03-08. 1402dd5f96c4SPhilip Paeps America/Nuuk renamed from America/Godthab. 1403dd5f96c4SPhilip Paeps zic now supports expiration dates for leap second lists. 1404dd5f96c4SPhilip Paeps 1405dd5f96c4SPhilip Paeps Changes to future timestamps 1406dd5f96c4SPhilip Paeps 1407dd5f96c4SPhilip Paeps Morocco's second spring-forward transition in 2020 will be May 31, 1408dd5f96c4SPhilip Paeps not May 24 as predicted earlier. (Thanks to Semlali Naoufal.) 1409dd5f96c4SPhilip Paeps Adjust future-year predictions to use the first Sunday after the 1410dd5f96c4SPhilip Paeps day after Ramadan, not the first Sunday after Ramadan. 1411dd5f96c4SPhilip Paeps 1412dd5f96c4SPhilip Paeps Canada's Yukon, represented by America/Whitehorse and 1413dd5f96c4SPhilip Paeps America/Dawson, advanced to -07 year-round, beginning with its 1414dd5f96c4SPhilip Paeps spring-forward transition on 2020-03-08, and will not fall back on 1415dd5f96c4SPhilip Paeps 2020-11-01. Although a government press release calls this 1416dd5f96c4SPhilip Paeps "permanent Pacific Daylight Saving Time", we prefer MST for 1417dd5f96c4SPhilip Paeps consistency with nearby Dawson Creek, Creston, and Fort Nelson. 1418dd5f96c4SPhilip Paeps (Thanks to Tim Parenti.) 1419dd5f96c4SPhilip Paeps 1420dd5f96c4SPhilip Paeps Changes to past timestamps 1421dd5f96c4SPhilip Paeps 1422dd5f96c4SPhilip Paeps Shanghai observed DST in 1919. (Thanks to Phake Nick.) 1423dd5f96c4SPhilip Paeps 1424dd5f96c4SPhilip Paeps Changes to timezone identifiers 1425dd5f96c4SPhilip Paeps 1426dd5f96c4SPhilip Paeps To reflect current usage in English better, America/Godthab has 1427dd5f96c4SPhilip Paeps been renamed to America/Nuuk. A backwards-compatibility link 1428dd5f96c4SPhilip Paeps remains for the old name. 1429dd5f96c4SPhilip Paeps 1430dd5f96c4SPhilip Paeps Changes to code 1431dd5f96c4SPhilip Paeps 1432dd5f96c4SPhilip Paeps localtime.c no longer mishandles timestamps after the last 1433dd5f96c4SPhilip Paeps transition in a TZif file with leap seconds and with daylight 1434dd5f96c4SPhilip Paeps saving time transitions projected into the indefinite future. 1435dd5f96c4SPhilip Paeps For example, with TZ='America/Los_Angeles' with leap seconds, 1436dd5f96c4SPhilip Paeps zdump formerly reported a DST transition on 2038-03-14 1437dd5f96c4SPhilip Paeps from 01:59:32.999... to 02:59:33 instead of the correct transition 1438dd5f96c4SPhilip Paeps from 01:59:59.999... to 03:00:00. 1439dd5f96c4SPhilip Paeps 1440dd5f96c4SPhilip Paeps zic -L now supports an Expires line in the leapseconds file, and 1441dd5f96c4SPhilip Paeps truncates the TZif output accordingly. This propagates leap 1442dd5f96c4SPhilip Paeps second expiration information into the TZif file, and avoids the 1443dd5f96c4SPhilip Paeps abovementioned localtime.c bug as well as similar bugs present in 1444dd5f96c4SPhilip Paeps many client implementations. If no Expires line is present, zic 1445dd5f96c4SPhilip Paeps -L instead truncates the TZif output based on the #expires comment 1446dd5f96c4SPhilip Paeps present in leapseconds files distributed by tzdb 2018f and later; 1447dd5f96c4SPhilip Paeps however, this usage is obsolescent. For now, the distributed 1448dd5f96c4SPhilip Paeps leapseconds file has an Expires line that is commented out, so 1449dd5f96c4SPhilip Paeps that the file can be fed to older versions of zic which ignore the 1450dd5f96c4SPhilip Paeps commented-out line. Future tzdb distributions are planned to 1451dd5f96c4SPhilip Paeps contain a leapseconds file with an Expires line. 1452dd5f96c4SPhilip Paeps 1453dd5f96c4SPhilip Paeps The configuration macros HAVE_TZNAME and USG_COMPAT should now be 1454dd5f96c4SPhilip Paeps set to 1 if the system library supports the feature, and 2 if not. 1455dd5f96c4SPhilip Paeps As before, these macros are nonzero if tzcode should support the 1456dd5f96c4SPhilip Paeps feature, zero otherwise. 1457dd5f96c4SPhilip Paeps 1458dd5f96c4SPhilip Paeps The configuration macro ALTZONE now has the same values with the 1459dd5f96c4SPhilip Paeps same meaning as HAVE_TZNAME and USG_COMPAT. 1460dd5f96c4SPhilip Paeps 1461dd5f96c4SPhilip Paeps The code's defense against CRLF in leap-seconds.list is now 1462dd5f96c4SPhilip Paeps portable to POSIX awk. (Problem reported by Deborah Goldsmith.) 1463dd5f96c4SPhilip Paeps 1464dd5f96c4SPhilip Paeps Although the undocumented tzsetwall function is not changed in 1465dd5f96c4SPhilip Paeps this release, it is now deprecated in preparation for removal in 1466dd5f96c4SPhilip Paeps future releases. Due to POSIX requirements, tzsetwall has not 1467dd5f96c4SPhilip Paeps worked for some time. Any code that uses it should instead use 1468dd5f96c4SPhilip Paeps tzalloc(NULL) or, if portability trumps thread-safety, should 1469dd5f96c4SPhilip Paeps unset the TZ environment variable. 1470dd5f96c4SPhilip Paeps 1471dd5f96c4SPhilip Paeps Changes to commentary 1472dd5f96c4SPhilip Paeps 1473dd5f96c4SPhilip Paeps The Îles-de-la-Madeleine and the Listuguj reserve are noted as 1474dd5f96c4SPhilip Paeps following America/Halifax, and comments about Yukon's "south" and 1475dd5f96c4SPhilip Paeps "north" have been corrected to say "east" and "west". (Thanks to 1476dd5f96c4SPhilip Paeps Jeffery Nichols.) 1477dd5f96c4SPhilip Paeps 1478dd5f96c4SPhilip Paeps 1479798c0c0bSPhilip PaepsRelease 2019c - 2019-09-11 08:59:48 -0700 1480798c0c0bSPhilip Paeps 1481798c0c0bSPhilip Paeps Briefly: 1482798c0c0bSPhilip Paeps Fiji observes DST from 2019-11-10 to 2020-01-12. 1483798c0c0bSPhilip Paeps Norfolk Island starts observing Australian-style DST. 1484798c0c0bSPhilip Paeps 1485798c0c0bSPhilip Paeps Changes to future timestamps 1486798c0c0bSPhilip Paeps 1487798c0c0bSPhilip Paeps Fiji's next DST transitions will be 2019-11-10 and 2020-01-12 1488798c0c0bSPhilip Paeps instead of 2019-11-03 and 2020-01-19. (Thanks to Raymond Kumar.) 1489798c0c0bSPhilip Paeps Adjust future guesses accordingly. 1490798c0c0bSPhilip Paeps 1491798c0c0bSPhilip Paeps Norfolk Island will observe Australian-style DST starting in 1492798c0c0bSPhilip Paeps spring 2019. The first transition is on 2019-10-06. (Thanks to 1493798c0c0bSPhilip Paeps Kyle Czech and Michael Deckers.) 1494798c0c0bSPhilip Paeps 1495798c0c0bSPhilip Paeps Changes to past timestamps 1496798c0c0bSPhilip Paeps 1497798c0c0bSPhilip Paeps Many corrections to time in Turkey from 1940 through 1985. 1498798c0c0bSPhilip Paeps (Thanks to Oya Vulaş via Alois Treindl, and to Kıvanç Yazan.) 1499798c0c0bSPhilip Paeps 1500798c0c0bSPhilip Paeps The Norfolk Island 1975-03-02 transition was at 02:00 standard 1501798c0c0bSPhilip Paeps time, not 02:00 DST. (Thanks to Michael Deckers.) 1502798c0c0bSPhilip Paeps 1503798c0c0bSPhilip Paeps South Korea observed DST from 1948 through 1951. Although this 1504798c0c0bSPhilip Paeps info was supposed to appear in release 2014j, a typo inadvertently 1505798c0c0bSPhilip Paeps suppressed the change. (Thanks to Alois Treindl.) 1506798c0c0bSPhilip Paeps 1507798c0c0bSPhilip Paeps Detroit observed DST in 1967 and 1968 following the US DST rules, 1508798c0c0bSPhilip Paeps except that its 1967 DST began on June 14 at 00:01. (Thanks to 1509798c0c0bSPhilip Paeps Alois Treindl for pointing out that the old data entries were 1510798c0c0bSPhilip Paeps probably wrong.) 1511798c0c0bSPhilip Paeps 1512798c0c0bSPhilip Paeps Fix several errors in pre-1970 transitions in Perry County, IN. 15136b7d3b4dSPhilip Paeps (Thanks to Alois Treindl for pointing out the 1967/9 errors.) 1514798c0c0bSPhilip Paeps 1515798c0c0bSPhilip Paeps Edmonton did not observe DST in 1967 or 1969. In 1946 Vancouver 1516798c0c0bSPhilip Paeps ended DST on 09-29 not 10-13, and Vienna ended DST on 10-07 not 1517798c0c0bSPhilip Paeps 10-06. In 1945 Königsberg (now Kaliningrad) switched from +01/+02 1518798c0c0bSPhilip Paeps to +02/+03 on 04-10 not 01-01, and its +02/+03 is abbreviated 15196b7d3b4dSPhilip Paeps EET/EEST, not CET/CEST. (Thanks to Alois Treindl.) In 1946 1520798c0c0bSPhilip Paeps Königsberg switched to +03 on 04-07 not 01-01. 1521798c0c0bSPhilip Paeps 1522798c0c0bSPhilip Paeps In 1946 Louisville switched from CST to CDT on 04-28 at 00:01, not 1523798c0c0bSPhilip Paeps 01-01 at 00:00. (Thanks to Alois Treindl and Michael Deckers.) 1524798c0c0bSPhilip Paeps Also, it switched from CST to CDT on 1950-04-30, not 1947-04-27. 1525798c0c0bSPhilip Paeps 1526798c0c0bSPhilip Paeps The 1892-05-01 transition in Brussels was at 00:17:30, not at noon. 1527798c0c0bSPhilip Paeps (Thanks to Michael Deckers.) 1528798c0c0bSPhilip Paeps 1529798c0c0bSPhilip Paeps Changes to past time zone abbreviations and DST flags 1530798c0c0bSPhilip Paeps 1531798c0c0bSPhilip Paeps Hong Kong Winter Time, observed from 1941-10-01 to 1941-12-25, 1532798c0c0bSPhilip Paeps is now flagged as DST and is abbreviated HKWT not HKT. 1533798c0c0bSPhilip Paeps 1534798c0c0bSPhilip Paeps Changes to code 1535798c0c0bSPhilip Paeps 1536798c0c0bSPhilip Paeps leapseconds.awk now relies only on its input data, rather than 1537798c0c0bSPhilip Paeps also relying on its comments. (Inspired by code from Dennis 1538798c0c0bSPhilip Paeps Ferguson and Chris Woodbury.) 1539798c0c0bSPhilip Paeps 1540798c0c0bSPhilip Paeps The code now defends against CRLFs in leap-seconds.list. 1541798c0c0bSPhilip Paeps (Thanks to Brian Inglis and Chris Woodbury.) 1542798c0c0bSPhilip Paeps 1543798c0c0bSPhilip Paeps Changes to documentation and commentary 1544798c0c0bSPhilip Paeps 1545798c0c0bSPhilip Paeps theory.html discusses leap seconds. (Thanks to Steve Summit.) 1546798c0c0bSPhilip Paeps 1547798c0c0bSPhilip Paeps Nashville's newspapers dueled about the time of day in the 1950s. 1548798c0c0bSPhilip Paeps (Thanks to John Seigenthaler.) 1549798c0c0bSPhilip Paeps 1550798c0c0bSPhilip Paeps Liechtenstein observed Swiss DST in 1941/2. 1551798c0c0bSPhilip Paeps (Thanks to Alois Treindl.) 1552798c0c0bSPhilip Paeps 1553798c0c0bSPhilip Paeps 15542865ab3fSPhilip PaepsRelease 2019b - 2019-07-01 00:09:53 -0700 15552865ab3fSPhilip Paeps 15562865ab3fSPhilip Paeps Briefly: 15572865ab3fSPhilip Paeps Brazil no longer observes DST. 15582865ab3fSPhilip Paeps 'zic -b slim' outputs smaller TZif files; please try it out. 15592865ab3fSPhilip Paeps Palestine's 2019 spring-forward transition was on 03-29, not 03-30. 15602865ab3fSPhilip Paeps 15612865ab3fSPhilip Paeps Changes to future timestamps 15622865ab3fSPhilip Paeps 15632865ab3fSPhilip Paeps Brazil has canceled DST and will stay on standard time indefinitely. 15642865ab3fSPhilip Paeps (Thanks to Steffen Thorsen, Marcus Diniz, and Daniel Soares de 15652865ab3fSPhilip Paeps Oliveira.) 15662865ab3fSPhilip Paeps 15672865ab3fSPhilip Paeps Predictions for Morocco now go through 2087 instead of 2037, to 15682865ab3fSPhilip Paeps work around a problem on newlib when using TZif files output by 15692865ab3fSPhilip Paeps zic 2019a or earlier. (Problem reported by David Gauchard.) 15702865ab3fSPhilip Paeps 15712865ab3fSPhilip Paeps Changes to past and future timestamps 15722865ab3fSPhilip Paeps 15732865ab3fSPhilip Paeps Palestine's 2019 spring transition was 03-29 at 00:00, not 03-30 15742865ab3fSPhilip Paeps at 01:00. (Thanks to Sharef Mustafa and Even Scharning.) Guess 15752865ab3fSPhilip Paeps future transitions to be March's last Friday at 00:00. 15762865ab3fSPhilip Paeps 15772865ab3fSPhilip Paeps Changes to past timestamps 15782865ab3fSPhilip Paeps 15792865ab3fSPhilip Paeps Hong Kong's 1941-06-15 spring-forward transition was at 03:00, not 15802865ab3fSPhilip Paeps 03:30. Its 1945 transition from JST to HKT was on 11-18 at 02:00, 15812865ab3fSPhilip Paeps not 09-15 at 00:00. In 1946 its spring-forward transition was on 15822865ab3fSPhilip Paeps 04-21 at 00:00, not the previous day at 03:30. From 1946 through 15832865ab3fSPhilip Paeps 1952 its fall-back transitions occurred at 04:30, not at 03:30. 15842865ab3fSPhilip Paeps In 1947 its fall-back transition was on 11-30, not 12-30. 15852865ab3fSPhilip Paeps (Thanks to P Chan.) 15862865ab3fSPhilip Paeps 15872865ab3fSPhilip Paeps Changes to past time zone abbreviations 15882865ab3fSPhilip Paeps 15892865ab3fSPhilip Paeps Italy's 1866 transition to Rome Mean Time was on December 12, not 15902865ab3fSPhilip Paeps September 22. This affects only the time zone abbreviation for 15912865ab3fSPhilip Paeps Europe/Rome between those dates. (Thanks to Stephen Trainor and 15922865ab3fSPhilip Paeps Luigi Rosa.) 15932865ab3fSPhilip Paeps 15942865ab3fSPhilip Paeps Changes affecting metadata only 15952865ab3fSPhilip Paeps 15962865ab3fSPhilip Paeps Add info about the Crimea situation in zone1970.tab and zone.tab. 15972865ab3fSPhilip Paeps (Problem reported by Serhii Demediuk.) 15982865ab3fSPhilip Paeps 15992865ab3fSPhilip Paeps Changes to code 16002865ab3fSPhilip Paeps 16012865ab3fSPhilip Paeps zic's new -b option supports a way to control data bloat and to 16022865ab3fSPhilip Paeps test for year-2038 bugs in software that reads TZif files. 16032865ab3fSPhilip Paeps 'zic -b fat' and 'zic -b slim' generate larger and smaller output; 16042865ab3fSPhilip Paeps for example, changing from fat to slim shrinks the Europe/London 16052865ab3fSPhilip Paeps file from 3648 to 1599 bytes, saving about 56%. Fat and slim 16062865ab3fSPhilip Paeps files represent the same set of timestamps and use the same TZif 16072865ab3fSPhilip Paeps format as documented in tzfile(5) and in Internet RFC 8536. 16082865ab3fSPhilip Paeps Fat format attempts to work around bugs or incompatibilities in 16092865ab3fSPhilip Paeps older software, notably software that mishandles 64-bit TZif data 16102865ab3fSPhilip Paeps or uses obsolete TZ strings like "EET-2EEST" that lack DST rules. 16112865ab3fSPhilip Paeps Slim format is more efficient and does not work around 64-bit bugs 16122865ab3fSPhilip Paeps or obsolete TZ strings. Currently zic defaults to fat format 16132865ab3fSPhilip Paeps unless you compile with -DZIC_BLOAT_DEFAULT=\"slim\"; this 16142865ab3fSPhilip Paeps out-of-the-box default is intended to change in future releases 16152865ab3fSPhilip Paeps as the buggy software often mishandles timestamps anyway. 16162865ab3fSPhilip Paeps 16172865ab3fSPhilip Paeps zic no longer treats a set of rules ending in 2037 specially. 16182865ab3fSPhilip Paeps Previously, zic assumed that such a ruleset meant that future 16192865ab3fSPhilip Paeps timestamps could not be predicted, and therefore omitted a 16202865ab3fSPhilip Paeps POSIX-like TZ string in the TZif output. The old behavior is no 16212865ab3fSPhilip Paeps longer needed for current tzdata, and caused problems with newlib 16222865ab3fSPhilip Paeps when used with older tzdata (reported by David Gauchard). 16232865ab3fSPhilip Paeps 16242865ab3fSPhilip Paeps zic no longer generates some artifact transitions. For example, 16252865ab3fSPhilip Paeps Europe/London no longer has a no-op transition in January 1996. 16262865ab3fSPhilip Paeps 16272865ab3fSPhilip Paeps Changes to build procedure 16282865ab3fSPhilip Paeps 16292865ab3fSPhilip Paeps tzdata.zi now assumes zic 2017c or later. This shrinks tzdata.zi 16302865ab3fSPhilip Paeps by a percent or so. 16312865ab3fSPhilip Paeps 16322865ab3fSPhilip Paeps Changes to documentation and commentary 16332865ab3fSPhilip Paeps 16342865ab3fSPhilip Paeps The Makefile now documents the POSIXRULES macro as being obsolete, 16352865ab3fSPhilip Paeps and similarly, zic's -p POSIXRULES option is now documented as 16362865ab3fSPhilip Paeps being obsolete. Although the POSIXRULES feature still exists and 16372865ab3fSPhilip Paeps works as before, in practice it is rarely used for its intended 16382865ab3fSPhilip Paeps purpose, and it does not work either in the default reference 16392865ab3fSPhilip Paeps implementation (for timestamps after 2037) or in common 16402865ab3fSPhilip Paeps implementations such as GNU/Linux (for contemporary timestamps). 16412865ab3fSPhilip Paeps Since POSIXRULES was designed primarily as a temporary transition 16422865ab3fSPhilip Paeps facility for System V platforms that died off decades ago, it is 16432865ab3fSPhilip Paeps being decommissioned rather than institutionalized. 16442865ab3fSPhilip Paeps 16452865ab3fSPhilip Paeps New info on Bonin Islands and Marcus (thanks to Wakaba and Phake Nick). 16462865ab3fSPhilip Paeps 16472865ab3fSPhilip Paeps 16482865ab3fSPhilip PaepsRelease 2019a - 2019-03-25 22:01:33 -0700 1649ad48359aSPhilip Paeps 1650ad48359aSPhilip Paeps Briefly: 1651ad48359aSPhilip Paeps Palestine "springs forward" on 2019-03-30 instead of 2019-03-23. 1652ad48359aSPhilip Paeps Metlakatla "fell back" to rejoin Alaska Time on 2019-01-20 at 02:00. 1653ad48359aSPhilip Paeps 1654ad48359aSPhilip Paeps Changes to past and future timestamps 1655ad48359aSPhilip Paeps 1656ad48359aSPhilip Paeps Palestine will not start DST until 2019-03-30, instead of 2019-03-23 as 1657ad48359aSPhilip Paeps previously predicted. Adjust our prediction by guessing that spring 1658ad48359aSPhilip Paeps transitions will be between 24 and 30 March, which matches recent practice 1659ad48359aSPhilip Paeps since 2016. (Thanks to Even Scharning and Tim Parenti.) 1660ad48359aSPhilip Paeps 1661ad48359aSPhilip Paeps Metlakatla ended its observance of Pacific standard time, 1662ad48359aSPhilip Paeps rejoining Alaska Time, on 2019-01-20 at 02:00. (Thanks to Ryan 1663ad48359aSPhilip Paeps Stanley and Tim Parenti.) 1664ad48359aSPhilip Paeps 1665ad48359aSPhilip Paeps Changes to past timestamps 1666ad48359aSPhilip Paeps 1667ad48359aSPhilip Paeps Israel observed DST in 1980 (08-02/09-13) and 1984 (05-05/08-25). 1668ad48359aSPhilip Paeps (Thanks to Alois Treindl and Isaac Starkman.) 1669ad48359aSPhilip Paeps 1670ad48359aSPhilip Paeps Changes to time zone abbreviations 1671ad48359aSPhilip Paeps 1672ad48359aSPhilip Paeps Etc/UCT is now a backward-compatibility link to Etc/UTC, instead 1673ad48359aSPhilip Paeps of being a separate zone that generates the abbreviation "UCT", 1674ad48359aSPhilip Paeps which nowadays is typically a typo. (Problem reported by Isiah 1675ad48359aSPhilip Paeps Meadows.) 1676ad48359aSPhilip Paeps 1677ad48359aSPhilip Paeps Changes to code 1678ad48359aSPhilip Paeps 1679ad48359aSPhilip Paeps zic now has an -r option to limit the time range of output data. 1680ad48359aSPhilip Paeps For example, 'zic -r @1000000000' limits the output data to 1681ad48359aSPhilip Paeps timestamps starting 1000000000 seconds after the Epoch. 1682ad48359aSPhilip Paeps This helps shrink output size and can be useful for applications 1683ad48359aSPhilip Paeps not needing the full timestamp history, such as TZDIST truncation; 1684ad48359aSPhilip Paeps see Internet RFC 8536 section 5.1. (Inspired by a feature request 1685ad48359aSPhilip Paeps from Christopher Wong, helped along by bug reports from Wong and 1686ad48359aSPhilip Paeps from Tim Parenti.) 1687ad48359aSPhilip Paeps 1688ad48359aSPhilip Paeps Changes to documentation 1689ad48359aSPhilip Paeps 1690ad48359aSPhilip Paeps Mention Internet RFC 8536 (February 2019), which documents TZif. 1691ad48359aSPhilip Paeps 1692ad48359aSPhilip Paeps tz-link.html now cites tzdata-meta 1693ad48359aSPhilip Paeps <https://tzdata-meta.timtimeonline.com/>. 1694ad48359aSPhilip Paeps 1695ad48359aSPhilip Paeps 1696d595db73SPhilip PaepsRelease 2018i - 2018-12-30 11:05:43 -0800 1697d595db73SPhilip Paeps 1698d595db73SPhilip Paeps Briefly: 1699d595db73SPhilip Paeps São Tomé and Príncipe switches from +01 to +00 on 2019-01-01. 1700d595db73SPhilip Paeps 1701d595db73SPhilip Paeps Changes to future timestamps 1702d595db73SPhilip Paeps 1703d595db73SPhilip Paeps Due to a change in government, São Tomé and Príncipe switches back 1704d595db73SPhilip Paeps from +01 to +00 on 2019-01-01 at 02:00. (Thanks to Vadim 1705d595db73SPhilip Paeps Nasardinov and Michael Deckers.) 1706d595db73SPhilip Paeps 1707d595db73SPhilip Paeps 17082c5e84ccSPhilip PaepsRelease 2018h - 2018-12-23 17:59:32 -0800 1709b9994124SPhilip Paeps 1710b9994124SPhilip Paeps Briefly: 17112c5e84ccSPhilip Paeps Qyzylorda, Kazakhstan moved from +06 to +05 on 2018-12-21. 17122c5e84ccSPhilip Paeps New zone Asia/Qostanay because Qostanay, Kazakhstan didn't move. 17132c5e84ccSPhilip Paeps Metlakatla, Alaska observes PST this winter only. 17142c5e84ccSPhilip Paeps Guess Morocco will continue to adjust clocks around Ramadan. 17152c5e84ccSPhilip Paeps Add predictions for Iran from 2038 through 2090. 1716b9994124SPhilip Paeps 1717b9994124SPhilip Paeps Changes to future timestamps 1718b9994124SPhilip Paeps 17192c5e84ccSPhilip Paeps Guess that Morocco will continue to fall back just before and 17202c5e84ccSPhilip Paeps spring forward just after Ramadan, the practice since 2012. 17212c5e84ccSPhilip Paeps (Thanks to Maamar Abdelkader.) This means Morocco will observe 17222c5e84ccSPhilip Paeps negative DST during Ramadan in main and vanguard formats, and in 17232c5e84ccSPhilip Paeps rearguard format it stays in the +00 timezone and observes 17242c5e84ccSPhilip Paeps ordinary DST in all months other than Ramadan. As before, extend 17252c5e84ccSPhilip Paeps this guesswork to the year 2037. As a consequence, Morocco is 17262c5e84ccSPhilip Paeps scheduled to observe three DST transitions in some Gregorian years 17272c5e84ccSPhilip Paeps (e.g., 2033) due to the mismatch between the Gregorian and Islamic 17282c5e84ccSPhilip Paeps calendars. 17292c5e84ccSPhilip Paeps 17302c5e84ccSPhilip Paeps The table of exact transitions for Iranian DST has been extended. 17312c5e84ccSPhilip Paeps It formerly cut off before the year 2038 in a nod to 32-bit time_t. 17322c5e84ccSPhilip Paeps It now cuts off before 2091 as there is doubt about how the Persian 17332c5e84ccSPhilip Paeps calendar will treat 2091. This change predicts DST transitions in 17342c5e84ccSPhilip Paeps 2038-9, 2042-3, and 2046-7 to occur one day later than previously 17352c5e84ccSPhilip Paeps predicted. As before, post-cutoff transitions are approximated. 17362c5e84ccSPhilip Paeps 17372c5e84ccSPhilip Paeps Changes to past and future timestamps 17382c5e84ccSPhilip Paeps 17392c5e84ccSPhilip Paeps Qyzylorda (aka Kyzylorda) oblast in Kazakhstan moved from +06 to 17402c5e84ccSPhilip Paeps +05 on 2018-12-21. This is a zone split as Qostanay (aka 17412c5e84ccSPhilip Paeps Kostanay) did not switch, so create a zone Asia/Qostanay. 17422c5e84ccSPhilip Paeps 17432c5e84ccSPhilip Paeps Metlakatla moved from Alaska to Pacific standard time on 2018-11-04. 17442c5e84ccSPhilip Paeps It did not change clocks that day and remains on -08 this winter. 17452c5e84ccSPhilip Paeps (Thanks to Ryan Stanley.) It will revert to the usual Alaska 17462c5e84ccSPhilip Paeps rules next spring, so this change affects only timestamps 17472c5e84ccSPhilip Paeps from 2018-11-04 through 2019-03-10. 17482c5e84ccSPhilip Paeps 17492c5e84ccSPhilip Paeps Change to past timestamps 17502c5e84ccSPhilip Paeps 17512c5e84ccSPhilip Paeps Kwajalein's 1993-08-20 transition from -12 to +12 was at 24:00, 17522c5e84ccSPhilip Paeps not 00:00. I transcribed the time incorrectly from Shanks. 17532c5e84ccSPhilip Paeps (Thanks to Phake Nick.) 17542c5e84ccSPhilip Paeps 17552c5e84ccSPhilip Paeps Nauru's 1979 transition was on 02-10 at 02:00, not 05-01 at 00:00. 17562c5e84ccSPhilip Paeps (Thanks to Phake Nick.) 17572c5e84ccSPhilip Paeps 17582c5e84ccSPhilip Paeps Guam observed DST irregularly from 1959 through 1977. 17592c5e84ccSPhilip Paeps (Thanks to Phake Nick.) 17602c5e84ccSPhilip Paeps 17612c5e84ccSPhilip Paeps Hong Kong observed DST in 1941 starting 06-15 (not 04-01), then on 17622c5e84ccSPhilip Paeps 10-01 changed standard time to +08:30 (not +08). Its transition 17632c5e84ccSPhilip Paeps back to +08 after WWII was on 1945-09-15, not the previous day. 17642c5e84ccSPhilip Paeps Its 1904-10-30 change took effect at 01:00 +08 (not 00:00 LMT). 17652c5e84ccSPhilip Paeps (Thanks to Phake Nick, Steve Allen, and Joseph Myers.) Also, 17662c5e84ccSPhilip Paeps its 1952 fallback was on 11-02 (not 10-25). 17672c5e84ccSPhilip Paeps 17682c5e84ccSPhilip Paeps This release contains many changes to timestamps before 1946 due 17692c5e84ccSPhilip Paeps to Japanese possession or occupation of Pacific/Chuuk, 17702c5e84ccSPhilip Paeps Pacific/Guam, Pacific/Kosrae, Pacific/Kwajalein, Pacific/Majuro, 17712c5e84ccSPhilip Paeps Pacific/Nauru, Pacific/Palau, and Pacific/Pohnpei. 17722c5e84ccSPhilip Paeps (Thanks to Phake Nick.) 17732c5e84ccSPhilip Paeps 17742c5e84ccSPhilip Paeps Assume that the Spanish East Indies was like the Philippines and 17752c5e84ccSPhilip Paeps observed American time until the end of 1844. This affects 17762c5e84ccSPhilip Paeps Pacific/Chuuk, Pacific/Kosrae, Pacific/Palau, and Pacific/Pohnpei. 17772c5e84ccSPhilip Paeps 17782c5e84ccSPhilip Paeps Changes to past tm_isdst flags 17792c5e84ccSPhilip Paeps 17802c5e84ccSPhilip Paeps For the recent Morocco change, the tm_isdst flag should be 1 from 17812c5e84ccSPhilip Paeps 2018-10-27 00:00 to 2018-10-28 03:00. (Thanks to Michael Deckers.) 17822c5e84ccSPhilip Paeps Give a URL to the official decree. (Thanks to Matt Johnson.) 17832c5e84ccSPhilip Paeps 17842c5e84ccSPhilip Paeps 17852c5e84ccSPhilip PaepsRelease 2018g - 2018-10-26 22:22:45 -0700 17862c5e84ccSPhilip Paeps 17872c5e84ccSPhilip Paeps Briefly: 17882c5e84ccSPhilip Paeps Morocco switches to permanent +01 on 2018-10-28. 17892c5e84ccSPhilip Paeps 17902c5e84ccSPhilip Paeps Changes to future timestamps 17912c5e84ccSPhilip Paeps 17922c5e84ccSPhilip Paeps Morocco switches from +00/+01 to permanent +01 effective 2018-10-28, 17932c5e84ccSPhilip Paeps so its clocks will not fall back as previously scheduled. 1794b9994124SPhilip Paeps (Thanks to Mohamed Essedik Najd and Brian Inglis.) 1795b9994124SPhilip Paeps 1796b9994124SPhilip Paeps Changes to code 1797b9994124SPhilip Paeps 1798b9994124SPhilip Paeps When generating TZif files with leap seconds, zic no longer uses a 1799b9994124SPhilip Paeps format that trips up older 32-bit clients, fixing a bug introduced 1800b9994124SPhilip Paeps in 2018f. (Reported by Daniel Fischer.) Also, the zic workaround 1801b9994124SPhilip Paeps for QTBUG-53071 now also works for TZif files with leap seconds. 1802b9994124SPhilip Paeps 1803b9994124SPhilip Paeps The translator to rearguard format now rewrites the line 1804b9994124SPhilip Paeps "Rule Japan 1948 1951 - Sep Sat>=8 25:00 0 S" to 1805b9994124SPhilip Paeps "Rule Japan 1948 1951 - Sep Sun>=9 1:00 0 S". 1806b9994124SPhilip Paeps This caters to zic before 2007 and to Oracle TZUpdater 2.2.0 1807b9994124SPhilip Paeps and earlier. (Reported by Christos Zoulas.) 1808b9994124SPhilip Paeps 1809b9994124SPhilip Paeps Changes to past time zone abbreviations 1810b9994124SPhilip Paeps 1811b9994124SPhilip Paeps Change HDT to HWT/HPT for WWII-era abbreviations in Hawaii. 1812b9994124SPhilip Paeps This reverts to 2011h, as the abbreviation change in 2011i was 1813b9994124SPhilip Paeps likely inadvertent. 1814b9994124SPhilip Paeps 1815b9994124SPhilip Paeps Changes to documentation 1816b9994124SPhilip Paeps 1817b9994124SPhilip Paeps tzfile.5 has new sections on interoperability issues. 1818b9994124SPhilip Paeps 1819b9994124SPhilip Paeps 182089abb9f8SPhilip PaepsRelease 2018f - 2018-10-18 00:14:18 -0700 182189abb9f8SPhilip Paeps 182289abb9f8SPhilip Paeps Briefly: 182389abb9f8SPhilip Paeps Volgograd moves from +03 to +04 on 2018-10-28. 182489abb9f8SPhilip Paeps Fiji ends DST 2019-01-13, not 2019-01-20. 182589abb9f8SPhilip Paeps Most of Chile changes DST dates, effective 2019-04-06. 182689abb9f8SPhilip Paeps 182789abb9f8SPhilip Paeps Changes to future timestamps 182889abb9f8SPhilip Paeps 182989abb9f8SPhilip Paeps Volgograd moves from +03 to +04 on 2018-10-28 at 02:00. 183089abb9f8SPhilip Paeps (Thanks to Alexander Fetisov and Stepan Golosunov.) 183189abb9f8SPhilip Paeps 183289abb9f8SPhilip Paeps Fiji ends DST 2019-01-13 instead of the 2019-01-20 previously 183389abb9f8SPhilip Paeps predicted. (Thanks to Raymond Kumar.) Adjust future predictions 183489abb9f8SPhilip Paeps accordingly. 183589abb9f8SPhilip Paeps 183689abb9f8SPhilip Paeps Most of Chile will end DST on the first Saturday in April at 24:00 mainland 183789abb9f8SPhilip Paeps time, and resume DST on the first Saturday in September at 24:00 mainland 183889abb9f8SPhilip Paeps time. The changes are effective from 2019-04-06, and do not affect the 183989abb9f8SPhilip Paeps Magallanes region modeled by America/Punta_Arenas. (Thanks to Juan Correa 184089abb9f8SPhilip Paeps and Tim Parenti.) Adjust future predictions accordingly. 184189abb9f8SPhilip Paeps 184289abb9f8SPhilip Paeps Changes to past timestamps 184389abb9f8SPhilip Paeps 184489abb9f8SPhilip Paeps The 2018-05-05 North Korea 30-minute time zone change took place 184589abb9f8SPhilip Paeps at 23:30 the previous day, not at 00:00 that day. 184689abb9f8SPhilip Paeps 184789abb9f8SPhilip Paeps China's 1988 spring-forward transition was on April 17, not 184889abb9f8SPhilip Paeps April 10. Its DST transitions in 1986/91 were at 02:00, not 00:00. 184989abb9f8SPhilip Paeps (Thanks to P Chan.) 185089abb9f8SPhilip Paeps 185189abb9f8SPhilip Paeps Fix several issues for Macau before 1992. Macau's pre-1904 LMT 185289abb9f8SPhilip Paeps was off by 10 s. Macau switched to +08 in 1904 not 1912, and 185389abb9f8SPhilip Paeps temporarily switched to +09/+10 during World War II. Macau 185489abb9f8SPhilip Paeps observed DST in 1942/79, not 1961/80, and there were several 185589abb9f8SPhilip Paeps errors for transition times and dates. (Thanks to P Chan.) 185689abb9f8SPhilip Paeps 185789abb9f8SPhilip Paeps The 1948-1951 fallback transitions in Japan were at 25:00 on 185889abb9f8SPhilip Paeps September's second Saturday, not at 24:00. (Thanks to Phake Nick.) 185989abb9f8SPhilip Paeps zic turns this into 01:00 on the day after September's second 186089abb9f8SPhilip Paeps Saturday, which is the best that POSIX or C platforms can do. 186189abb9f8SPhilip Paeps 186289abb9f8SPhilip Paeps Incorporate 1940-1949 Asia/Shanghai DST transitions from a 2014 186389abb9f8SPhilip Paeps paper by Li Yu, replacing more-questionable data from Shanks. 186489abb9f8SPhilip Paeps 186589abb9f8SPhilip Paeps Changes to time zone abbreviations 186689abb9f8SPhilip Paeps 186789abb9f8SPhilip Paeps Use "PST" and "PDT" for Philippine time. (Thanks to Paul Goyette.) 186889abb9f8SPhilip Paeps 186989abb9f8SPhilip Paeps Changes to code 187089abb9f8SPhilip Paeps 187189abb9f8SPhilip Paeps zic now always generates TZif files where time type 0 is used for 187289abb9f8SPhilip Paeps timestamps before the first transition. This simplifies the 187389abb9f8SPhilip Paeps reading of TZif files and should not affect behavior of existing 187489abb9f8SPhilip Paeps TZif readers because the same set of time types is used; only 187589abb9f8SPhilip Paeps their internal indexes may have changed. This affects only the 187689abb9f8SPhilip Paeps legacy zones EST5EDT, CST6CDT, MST7MDT, PST8PDT, CET, MET, and 187789abb9f8SPhilip Paeps EET, which previously used nonzero types for these timestamps. 187889abb9f8SPhilip Paeps 187989abb9f8SPhilip Paeps Because of the type 0 change, zic no longer outputs a dummy 188089abb9f8SPhilip Paeps transition at time -2**59 (before the Big Bang), as clients should 188189abb9f8SPhilip Paeps no longer need this to handle historical timestamps correctly. 188289abb9f8SPhilip Paeps This reverts a change introduced in 2013d and shrinks most TZif 188389abb9f8SPhilip Paeps files by a few bytes. 188489abb9f8SPhilip Paeps 188589abb9f8SPhilip Paeps zic now supports negative time-of-day in Rule and Leap lines, e.g., 188689abb9f8SPhilip Paeps "Rule X min max - Apr lastSun -6:00 1:00 -" means the transition 188789abb9f8SPhilip Paeps occurs at 18:00 on the Saturday before the last Sunday in April. 188889abb9f8SPhilip Paeps This behavior was documented in 2018a but the code did not 188989abb9f8SPhilip Paeps entirely match the documentation. 189089abb9f8SPhilip Paeps 189189abb9f8SPhilip Paeps localtime.c no longer requires at least one time type in TZif 189289abb9f8SPhilip Paeps files that lack transitions or have a POSIX-style TZ string. This 189389abb9f8SPhilip Paeps future-proofs the code against possible future extensions to the 189489abb9f8SPhilip Paeps format that would allow TZif files with POSIX-style TZ strings and 189589abb9f8SPhilip Paeps without transitions or time types. 189689abb9f8SPhilip Paeps 189789abb9f8SPhilip Paeps A read-access subscript error in localtime.c has been fixed. 189889abb9f8SPhilip Paeps It could occur only in TZif files with timecnt == 0, something that 189989abb9f8SPhilip Paeps does not happen in practice now but could happen in future versions. 190089abb9f8SPhilip Paeps 190189abb9f8SPhilip Paeps localtime.c no longer ignores TZif POSIX-style TZ strings that 190289abb9f8SPhilip Paeps specify only standard time. Instead, these TZ strings now 190389abb9f8SPhilip Paeps override the default time type for timestamps after the last 190489abb9f8SPhilip Paeps transition (or for all timestamps if there are no transitions), 190589abb9f8SPhilip Paeps just as DST strings specifying DST have always done. 190689abb9f8SPhilip Paeps 190789abb9f8SPhilip Paeps leapseconds.awk now outputs "#updated" and "#expires" comments, 190889abb9f8SPhilip Paeps and supports leap seconds at the ends of months other than June 190989abb9f8SPhilip Paeps and December. (Inspired by suggestions from Chris Woodbury.) 191089abb9f8SPhilip Paeps 191189abb9f8SPhilip Paeps Changes to documentation 191289abb9f8SPhilip Paeps 191389abb9f8SPhilip Paeps New restrictions: A Rule name must start with a character that 191489abb9f8SPhilip Paeps is neither an ASCII digit nor "-" nor "+", and an unquoted name 191589abb9f8SPhilip Paeps should not use characters in the set "!$%&'()*,/:;<=>?@[\]^`{|}~". 191689abb9f8SPhilip Paeps The latter restriction makes room for future extensions (a 191789abb9f8SPhilip Paeps possibility noted by Tom Lane). 191889abb9f8SPhilip Paeps 191989abb9f8SPhilip Paeps tzfile.5 now documents what time types apply before the first and 192089abb9f8SPhilip Paeps after the last transition, if any. 192189abb9f8SPhilip Paeps 192289abb9f8SPhilip Paeps Documentation now uses the spelling "timezone" for a TZ setting 192389abb9f8SPhilip Paeps that determines timestamp history, and "time zone" for a 192489abb9f8SPhilip Paeps geographic region currently sharing the same standard time. 192589abb9f8SPhilip Paeps 192689abb9f8SPhilip Paeps The name "TZif" is now used for the tz binary data format. 192789abb9f8SPhilip Paeps 192889abb9f8SPhilip Paeps tz-link.htm now mentions the A0 TimeZone Migration utilities. 192989abb9f8SPhilip Paeps (Thanks to Aldrin Martoq for the link.) 193089abb9f8SPhilip Paeps 193189abb9f8SPhilip Paeps Changes to build procedure 193289abb9f8SPhilip Paeps 193389abb9f8SPhilip Paeps New 'make' target 'rearguard_tarballs' to build the rearguard 193489abb9f8SPhilip Paeps tarball only. This is a convenience on platforms that lack lzip 193589abb9f8SPhilip Paeps if you want to build the rearguard tarball. (Problem reported by 193689abb9f8SPhilip Paeps Deborah Goldsmith.) 193789abb9f8SPhilip Paeps 193889abb9f8SPhilip Paeps tzdata.zi is now more stable from release to release. (Problem 193989abb9f8SPhilip Paeps noted by Tom Lane.) It is also a bit shorter. 194089abb9f8SPhilip Paeps 194189abb9f8SPhilip Paeps tzdata.zi now can contain comment lines documenting configuration 194289abb9f8SPhilip Paeps information, such as which data format was selected, which input 194389abb9f8SPhilip Paeps files were used, and how leap seconds are treated. (Problems 194489abb9f8SPhilip Paeps noted by Lester Caine and Brian Inglis.) If the Makefile defaults 194589abb9f8SPhilip Paeps are used these comment lines are absent, for backward 194689abb9f8SPhilip Paeps compatibility. A redistributor intending to alter its copy of the 194789abb9f8SPhilip Paeps files should also append "-LABEL" to the 'version' file's first 194889abb9f8SPhilip Paeps line, where "LABEL" identifies the redistributor's change. 194989abb9f8SPhilip Paeps 195089abb9f8SPhilip Paeps 1951d81c2dd9SPhilip PaepsRelease 2018e - 2018-05-01 23:42:51 -0700 1952d81c2dd9SPhilip Paeps 1953d81c2dd9SPhilip Paeps Briefly: 1954d81c2dd9SPhilip Paeps 1955d81c2dd9SPhilip Paeps North Korea switches back to +09 on 2018-05-05. 1956d81c2dd9SPhilip Paeps The main format uses negative DST again, for Ireland etc. 1957d81c2dd9SPhilip Paeps 'make tarballs' now also builds a rearguard tarball. 1958d81c2dd9SPhilip Paeps New 's' and 'd' suffixes in SAVE columns of Rule and Zone lines. 1959d81c2dd9SPhilip Paeps 1960d81c2dd9SPhilip Paeps Changes to past and future timestamps 1961d81c2dd9SPhilip Paeps 1962d81c2dd9SPhilip Paeps North Korea switches back from +0830 to +09 on 2018-05-05. 1963d81c2dd9SPhilip Paeps (Thanks to Kang Seonghoon, Arthur David Olson, Seo Sanghyeon, 1964d81c2dd9SPhilip Paeps and Tim Parenti.) 1965d81c2dd9SPhilip Paeps 1966d81c2dd9SPhilip Paeps Bring back the negative-DST changes of 2018a, except be more 1967d81c2dd9SPhilip Paeps compatible with data parsers that do not support negative DST. 1968d81c2dd9SPhilip Paeps Also, this now affects historical timestamps in Namibia and the 1969d81c2dd9SPhilip Paeps former Czechoslovakia, not just Ireland. The main format now uses 1970d81c2dd9SPhilip Paeps negative DST to model timestamps in Europe/Dublin (from 1971 on), 1971d81c2dd9SPhilip Paeps Europe/Prague (1946/7), and Africa/Windhoek (1994/2017). This 1972d81c2dd9SPhilip Paeps does not affect UT offsets, only time zone abbreviations and the 1973d81c2dd9SPhilip Paeps tm_isdst flag. Also, this does not affect rearguard or vanguard 1974d81c2dd9SPhilip Paeps formats; effectively the main format now uses vanguard instead of 1975d81c2dd9SPhilip Paeps rearguard format. Data parsers that do not support negative DST 1976d81c2dd9SPhilip Paeps can still use data from the rearguard tarball described below. 1977d81c2dd9SPhilip Paeps 1978d81c2dd9SPhilip Paeps Changes to build procedure 1979d81c2dd9SPhilip Paeps 1980d81c2dd9SPhilip Paeps The command 'make tarballs' now also builds the tarball 1981d81c2dd9SPhilip Paeps tzdataVERSION-rearguard.tar.gz, which is like tzdataVERSION.tar.gz 1982d81c2dd9SPhilip Paeps except that it uses rearguard format intended for trailing-edge 1983d81c2dd9SPhilip Paeps data parsers. 1984d81c2dd9SPhilip Paeps 1985d81c2dd9SPhilip Paeps Changes to data format and to code 1986d81c2dd9SPhilip Paeps 1987d81c2dd9SPhilip Paeps The SAVE column of Rule and Zone lines can now have an 's' or 'd' 1988d81c2dd9SPhilip Paeps suffix, which specifies whether the adjusted time is standard time 1989d81c2dd9SPhilip Paeps or daylight saving time. If no suffix is given, daylight saving 1990d81c2dd9SPhilip Paeps time is used if and only if the SAVE column is nonzero; this is 1991d81c2dd9SPhilip Paeps the longstanding behavior. Although this new feature is not used 1992d81c2dd9SPhilip Paeps in tzdata, it could be used to specify the legal time in Namibia 1993d81c2dd9SPhilip Paeps 1994-2017, as opposed to the popular time (see below). 1994d81c2dd9SPhilip Paeps 1995d81c2dd9SPhilip Paeps Changes to past timestamps 1996d81c2dd9SPhilip Paeps 1997d81c2dd9SPhilip Paeps From 1994 through 2017 Namibia observed DST in winter, not summer. 1998d81c2dd9SPhilip Paeps That is, it used negative DST, as Ireland still does. This change 1999d81c2dd9SPhilip Paeps does not affect UTC offsets; it affects only the tm_isdst flag and 2000d81c2dd9SPhilip Paeps the abbreviation used during summer, which is now CAT, not WAST. 2001d81c2dd9SPhilip Paeps Although (as noted by Michael Deckers) summer and winter time were 2002d81c2dd9SPhilip Paeps both simply called "standard time" in Namibian law, in common 2003d81c2dd9SPhilip Paeps practice winter time was considered to be DST (as noted by Stephen 2004d81c2dd9SPhilip Paeps Colebourne). The full effect of this change is only in vanguard 200589abb9f8SPhilip Paeps and main format; in rearguard format, the tm_isdst flag is still 2006d81c2dd9SPhilip Paeps zero in winter and nonzero in summer. 2007d81c2dd9SPhilip Paeps 2008d81c2dd9SPhilip Paeps In 1946/7 Czechoslovakia also observed negative DST in winter. 200989abb9f8SPhilip Paeps The full effect of this change is only in vanguard and main 201089abb9f8SPhilip Paeps formats; in rearguard format, it is modeled as plain GMT without 2011d81c2dd9SPhilip Paeps daylight saving. Also, the dates of some 1944/5 DST transitions 2012d81c2dd9SPhilip Paeps in Czechoslovakia have been changed. 2013d81c2dd9SPhilip Paeps 2014d81c2dd9SPhilip Paeps 201546bee4edSPhilip PaepsRelease 2018d - 2018-03-22 07:05:46 -0700 201646bee4edSPhilip Paeps 201746bee4edSPhilip Paeps Briefly: 201846bee4edSPhilip Paeps 201946bee4edSPhilip Paeps Palestine starts DST a week earlier in 2018. 202046bee4edSPhilip Paeps Add support for vanguard and rearguard data consumers. 202146bee4edSPhilip Paeps Add subsecond precision to source data format, though not to data. 202246bee4edSPhilip Paeps 202346bee4edSPhilip Paeps Changes to future timestamps 202446bee4edSPhilip Paeps 202546bee4edSPhilip Paeps In 2018, Palestine starts DST on March 24, not March 31. 202646bee4edSPhilip Paeps Adjust future predictions accordingly. (Thanks to Sharef Mustafa.) 202746bee4edSPhilip Paeps 202846bee4edSPhilip Paeps Changes to past and future timestamps 202946bee4edSPhilip Paeps 203046bee4edSPhilip Paeps Casey Station in Antarctica changed from +11 to +08 on 2018-03-11 203146bee4edSPhilip Paeps at 04:00. (Thanks to Steffen Thorsen.) 203246bee4edSPhilip Paeps 203346bee4edSPhilip Paeps Changes to past timestamps 203446bee4edSPhilip Paeps 203546bee4edSPhilip Paeps Historical transitions for Uruguay, represented by 203646bee4edSPhilip Paeps America/Montevideo, have been updated per official legal documents, 203746bee4edSPhilip Paeps replacing previous data mainly originating from the inventions of 203846bee4edSPhilip Paeps Shanks & Pottenger. This has resulted in adjustments ranging from 203946bee4edSPhilip Paeps 30 to 90 minutes in either direction over at least two dozen 204046bee4edSPhilip Paeps distinct periods ranging from one day to several years in length. 204146bee4edSPhilip Paeps A mere handful of pre-1991 transitions are unaffected; data since 204246bee4edSPhilip Paeps then has come from more reliable contemporaneous reporting. These 204346bee4edSPhilip Paeps changes affect various timestamps in 1920-1923, 1936, 1939, 204446bee4edSPhilip Paeps 1942-1943, 1959, 1966-1970, 1972, 1974-1980, and 1988-1990. 204546bee4edSPhilip Paeps Additionally, Uruguay's pre-standard-time UT offset has been 204646bee4edSPhilip Paeps adjusted westward by 7 seconds, from UT-03:44:44 to UT-03:44:51, to 204746bee4edSPhilip Paeps match the location of the Observatory of the National Meteorological 204846bee4edSPhilip Paeps Institute in Montevideo. 204946bee4edSPhilip Paeps (Thanks to Jeremie Bonjour, Tim Parenti, and Michael Deckers.) 205046bee4edSPhilip Paeps 205194c2d487SPhilip Paeps East Kiribati skipped New Year's Eve 1994, not New Year's Day 1995. 205294c2d487SPhilip Paeps (Thanks to Kerry Shetline.) 205346bee4edSPhilip Paeps 2054d81c2dd9SPhilip Paeps Fix the 1912-01-01 transition for Portugal and its colonies. 205546bee4edSPhilip Paeps This transition was at 00:00 according to the new UT offset, not 205646bee4edSPhilip Paeps according to the old one. Also assume that Cape Verde switched on 205746bee4edSPhilip Paeps the same date as the rest, not in 1907. This affects 205846bee4edSPhilip Paeps Africa/Bissau, Africa/Sao_Tome, Asia/Macau, Atlantic/Azores, 205946bee4edSPhilip Paeps Atlantic/Cape_Verde, Atlantic/Madeira, and Europe/Lisbon. 206046bee4edSPhilip Paeps (Thanks to Michael Deckers.) 206146bee4edSPhilip Paeps 206246bee4edSPhilip Paeps Fix an off-by-1 error for pre-1913 timestamps in Jamaica and in 206346bee4edSPhilip Paeps Turks & Caicos. 206446bee4edSPhilip Paeps 206546bee4edSPhilip Paeps Changes to past time zone abbreviations 206646bee4edSPhilip Paeps 206746bee4edSPhilip Paeps MMT took effect in Uruguay from 1908-06-10, not 1898-06-28. There 206846bee4edSPhilip Paeps is no clock change associated with the transition. 206946bee4edSPhilip Paeps 207046bee4edSPhilip Paeps Changes to build procedure 207146bee4edSPhilip Paeps 207246bee4edSPhilip Paeps The new DATAFORM macro in the Makefile lets the installer choose 207346bee4edSPhilip Paeps among three source data formats. The idea is to lessen downstream 207446bee4edSPhilip Paeps disruption when data formats are improved. 207546bee4edSPhilip Paeps 207646bee4edSPhilip Paeps * DATAFORM=vanguard installs from the latest, bleeding-edge 207746bee4edSPhilip Paeps format. DATAFORM=main (the default) installs from the format 207846bee4edSPhilip Paeps used in the 'africa' etc. files. DATAFORM=rearguard installs 207946bee4edSPhilip Paeps from a trailing-edge format. Eventually, elements of today's 208046bee4edSPhilip Paeps vanguard format should move to the main format, and similarly 208146bee4edSPhilip Paeps the main format's features should eventually move to the 208246bee4edSPhilip Paeps rearguard format. 208346bee4edSPhilip Paeps 208446bee4edSPhilip Paeps * In the current version, the main and rearguard formats are 208546bee4edSPhilip Paeps identical and match that of 2018c, so this change does not 208646bee4edSPhilip Paeps affect default behavior. The vanguard format currently contains 208746bee4edSPhilip Paeps one feature not in the main format: negative SAVE values. This 208846bee4edSPhilip Paeps improves support for Ireland, which uses Irish Standard Time 208946bee4edSPhilip Paeps (IST, UTC+01) in summer and GMT (UTC) in winter. tzcode has 209046bee4edSPhilip Paeps supported negative SAVE values for decades, and this feature 209146bee4edSPhilip Paeps should move to the main format soon. However, it will not move 209246bee4edSPhilip Paeps to the rearguard format for quite some time because some 209346bee4edSPhilip Paeps downstream parsers do not support it. 209446bee4edSPhilip Paeps 209546bee4edSPhilip Paeps * The build procedure constructs three files vanguard.zi, main.zi, 2096ad48359aSPhilip Paeps and rearguard.zi, one for each format. Although the files 2097ad48359aSPhilip Paeps represent essentially the same data, they may have minor 2098ad48359aSPhilip Paeps discrepancies that users are not likely to notice. The files 209946bee4edSPhilip Paeps are intended for downstream data consumers and are not 210046bee4edSPhilip Paeps installed. Zoneinfo parsers that do not support negative SAVE values 210146bee4edSPhilip Paeps should start using rearguard.zi, so that they will be unaffected 210246bee4edSPhilip Paeps when the negative-DST feature moves from vanguard to main. 210346bee4edSPhilip Paeps Bleeding-edge Zoneinfo parsers that support the new features 210446bee4edSPhilip Paeps already can use vanguard.zi; in this respect, current tzcode is 210546bee4edSPhilip Paeps bleeding-edge. 210646bee4edSPhilip Paeps 210746bee4edSPhilip Paeps The Makefile should now be safe for parallelized builds, and 'make 210846bee4edSPhilip Paeps -j to2050new.tzs' is now much faster on a multiprocessor host 210946bee4edSPhilip Paeps with GNU Make. 211046bee4edSPhilip Paeps 211146bee4edSPhilip Paeps When built with -DSUPPRESS_TZDIR, the tzcode library no longer 211246bee4edSPhilip Paeps prepends TZDIR/ to file names that do not begin with '/'. This is 211346bee4edSPhilip Paeps not recommended for general use, due to its security implications. 211446bee4edSPhilip Paeps (From a suggestion by Manuela Friedrich.) 211546bee4edSPhilip Paeps 211646bee4edSPhilip Paeps Changes to code 211746bee4edSPhilip Paeps 211846bee4edSPhilip Paeps zic now accepts subsecond precision in expressions like 211946bee4edSPhilip Paeps 00:19:32.13, which is approximately the legal time of the 212046bee4edSPhilip Paeps Netherlands from 1835 to 1937. However, because it is 212146bee4edSPhilip Paeps questionable whether the few recorded uses of non-integer offsets 212246bee4edSPhilip Paeps had subsecond precision in practice, there are no plans for tzdata 212346bee4edSPhilip Paeps to use this feature. (Thanks to Steve Allen for pointing out 212446bee4edSPhilip Paeps the limitations of historical data in this area.) 212546bee4edSPhilip Paeps 212646bee4edSPhilip Paeps The code is a bit more portable to MS-Windows. Installers can 212746bee4edSPhilip Paeps compile with -DRESERVE_STD_EXT_IDS on MS-Windows platforms that 212846bee4edSPhilip Paeps reserve identifiers like 'localtime'. (Thanks to Manuela 21292865ab3fSPhilip Paeps Friedrich.) 213046bee4edSPhilip Paeps 213146bee4edSPhilip Paeps Changes to documentation and commentary 213246bee4edSPhilip Paeps 213346bee4edSPhilip Paeps theory.html now outlines tzdb's extensions to POSIX's model for 213446bee4edSPhilip Paeps civil time, and has a section "POSIX features no longer needed" 213546bee4edSPhilip Paeps that lists POSIX API components that are now vestigial. 213646bee4edSPhilip Paeps (From suggestions by Steve Summit.) It also better distinguishes 213746bee4edSPhilip Paeps time zones from tz regions. (From a suggestion by Guy Harris.) 213846bee4edSPhilip Paeps 213946bee4edSPhilip Paeps Commentary is now more consistent about using the phrase "daylight 214046bee4edSPhilip Paeps saving time", to match the C name tm_isdst. Daylight saving time 214146bee4edSPhilip Paeps need not occur in summer, and need not have a positive offset from 214246bee4edSPhilip Paeps standard time. 214346bee4edSPhilip Paeps 214446bee4edSPhilip Paeps Commentary about historical transitions in Uruguay has been expanded 214546bee4edSPhilip Paeps with links to many relevant legal documents. 214646bee4edSPhilip Paeps (Thanks to Tim Parenti.) 214746bee4edSPhilip Paeps 214846bee4edSPhilip Paeps Commentary now uses some non-ASCII characters with Unicode value 214946bee4edSPhilip Paeps less than U+0100, as they can be useful and should work even with 215046bee4edSPhilip Paeps older editors such as XEmacs. 215146bee4edSPhilip Paeps 215246bee4edSPhilip Paeps 2153afb91be3SPhilip PaepsRelease 2018c - 2018-01-22 23:00:44 -0800 2154afb91be3SPhilip Paeps 2155afb91be3SPhilip Paeps Briefly: 215646bee4edSPhilip Paeps Revert Irish changes that relied on negative SAVE values. 2157afb91be3SPhilip Paeps 2158afb91be3SPhilip Paeps Changes to tm_isdst 2159afb91be3SPhilip Paeps 2160afb91be3SPhilip Paeps Revert the 2018a change to Europe/Dublin. As before, this change 2161afb91be3SPhilip Paeps does not affect UT offsets or abbreviations; it affects only 2162afb91be3SPhilip Paeps whether timestamps are considered to be standard time or 2163afb91be3SPhilip Paeps daylight-saving time, as expressed in the tm_isdst flag of C's 2164afb91be3SPhilip Paeps struct tm type. This reversion is intended to be a temporary 2165afb91be3SPhilip Paeps workaround for problems discovered with downstream uses of 2166afb91be3SPhilip Paeps releases 2018a and 2018b, which implemented Irish time by using 216746bee4edSPhilip Paeps negative SAVE values in the Eire rules of the 'europe' file. 216846bee4edSPhilip Paeps Although negative SAVE values have been part of tzcode for many 2169afb91be3SPhilip Paeps years and are supported by many platforms, they were not 2170afb91be3SPhilip Paeps documented before 2018a and ICU and OpenJDK do not currently 2171afb91be3SPhilip Paeps support them. A mechanism to export data to platforms lacking 2172afb91be3SPhilip Paeps support for negative DST is planned to be developed before the 2173afb91be3SPhilip Paeps change is reapplied. (Problems reported by Deborah Goldsmith and 2174afb91be3SPhilip Paeps Stephen Colebourne.) 2175afb91be3SPhilip Paeps 2176afb91be3SPhilip Paeps Changes to past timestamps 2177afb91be3SPhilip Paeps 2178afb91be3SPhilip Paeps Japanese DST transitions (1948-1951) were Sundays at 00:00, not 2179afb91be3SPhilip Paeps Saturdays or Sundays at 02:00. (Thanks to Takayuki Nikai.) 2180afb91be3SPhilip Paeps 2181afb91be3SPhilip Paeps Changes to build procedure 2182afb91be3SPhilip Paeps 2183afb91be3SPhilip Paeps The build procedure now works around mawk 1.3.3's lack of support 2184afb91be3SPhilip Paeps for character class expressions. (Problem reported by Ohyama.) 2185afb91be3SPhilip Paeps 2186afb91be3SPhilip Paeps 2187afb91be3SPhilip PaepsRelease 2018b - 2018-01-17 23:24:48 -0800 2188afb91be3SPhilip Paeps 2189afb91be3SPhilip Paeps Briefly: 2190afb91be3SPhilip Paeps Fix a packaging problem in tz2018a, which was missing 'pacificnew'. 2191afb91be3SPhilip Paeps 2192afb91be3SPhilip Paeps Changes to build procedure 2193afb91be3SPhilip Paeps 2194afb91be3SPhilip Paeps The distribution now contains the file 'pacificnew' again. 21959f9fc6bbSPhilip Paeps This file was inadvertently omitted in the 2018a distribution. 2196afb91be3SPhilip Paeps (Problem reported by Matias Fonzo.) 2197afb91be3SPhilip Paeps 2198afb91be3SPhilip Paeps 2199f2fcff28SPhilip PaepsRelease 2018a - 2018-01-12 22:29:21 -0800 2200f2fcff28SPhilip Paeps 2201f2fcff28SPhilip Paeps Briefly: 2202f2fcff28SPhilip Paeps São Tomé and Príncipe switched from +00 to +01. 2203f2fcff28SPhilip Paeps Brazil's DST will now start on November's first Sunday. 2204f2fcff28SPhilip Paeps Ireland's standard time is now in the summer, not the winter. 2205f2fcff28SPhilip Paeps Use Debian-style installation locations, instead of 4.3BSD-style. 2206f2fcff28SPhilip Paeps New zic option -t. 2207f2fcff28SPhilip Paeps 2208f2fcff28SPhilip Paeps Changes to past and future timestamps 2209f2fcff28SPhilip Paeps 2210f2fcff28SPhilip Paeps São Tomé and Príncipe switched from +00 to +01 on 2018-01-01 at 2211f2fcff28SPhilip Paeps 01:00. (Thanks to Steffen Thorsen and Michael Deckers.) 2212f2fcff28SPhilip Paeps 2213f2fcff28SPhilip Paeps Changes to future timestamps 2214f2fcff28SPhilip Paeps 2215f2fcff28SPhilip Paeps Starting in 2018 southern Brazil will begin DST on November's 2216f2fcff28SPhilip Paeps first Sunday instead of October's third Sunday. (Thanks to 2217f2fcff28SPhilip Paeps Steffen Thorsen.) 2218f2fcff28SPhilip Paeps 2219f2fcff28SPhilip Paeps Changes to past timestamps 2220f2fcff28SPhilip Paeps 2221f2fcff28SPhilip Paeps A discrepancy of 4 s in timestamps before 1931 in South Sudan has 2222f2fcff28SPhilip Paeps been corrected. The 'backzone' and 'zone.tab' files did not agree 2223f2fcff28SPhilip Paeps with the 'africa' and 'zone1970.tab' files. (Problem reported by 2224f2fcff28SPhilip Paeps Michael Deckers.) 2225f2fcff28SPhilip Paeps 2226f2fcff28SPhilip Paeps The abbreviation invented for Bolivia Summer Time (1931-2) is now 2227f2fcff28SPhilip Paeps BST instead of BOST, to be more consistent with the convention 2228f2fcff28SPhilip Paeps used for Latvian Summer Time (1918-9) and for British Summer Time. 2229f2fcff28SPhilip Paeps 2230f2fcff28SPhilip Paeps Changes to tm_isdst 2231f2fcff28SPhilip Paeps 2232f2fcff28SPhilip Paeps Change Europe/Dublin so that it observes Irish Standard Time (UT 2233f2fcff28SPhilip Paeps +01) in summer and GMT (as negative daylight-saving) in winter, 2234f2fcff28SPhilip Paeps instead of observing standard time (GMT) in winter and Irish 2235f2fcff28SPhilip Paeps Summer Time (UT +01) in summer. This change does not affect UT 2236f2fcff28SPhilip Paeps offsets or abbreviations; it affects only whether timestamps are 2237f2fcff28SPhilip Paeps considered to be standard time or daylight-saving time, as 2238f2fcff28SPhilip Paeps expressed in the tm_isdst flag of C's struct tm type. 2239f2fcff28SPhilip Paeps (Discrepancy noted by Derick Rethans.) 2240f2fcff28SPhilip Paeps 2241f2fcff28SPhilip Paeps Changes to build procedure 2242f2fcff28SPhilip Paeps 2243f2fcff28SPhilip Paeps The default installation locations have been changed to mostly 2244f2fcff28SPhilip Paeps match Debian circa 2017, instead of being designed as an add-on to 2245f2fcff28SPhilip Paeps 4.3BSD circa 1986. This affects the Makefile macros TOPDIR, 2246f2fcff28SPhilip Paeps TZDIR, MANDIR, and LIBDIR. New Makefile macros TZDEFAULT, USRDIR, 2247f2fcff28SPhilip Paeps USRSHAREDIR, BINDIR, ZDUMPDIR, and ZICDIR let installers tailor 2248f2fcff28SPhilip Paeps locations more precisely. (This responds to suggestions from 2249f2fcff28SPhilip Paeps Brian Inglis and from Steve Summit.) 2250f2fcff28SPhilip Paeps 2251f2fcff28SPhilip Paeps The default installation procedure no longer creates the 2252f2fcff28SPhilip Paeps backward-compatibility link US/Pacific-New, which causes 2253f2fcff28SPhilip Paeps confusion during user setup (e.g., see Debian bug 815200). 2254f2fcff28SPhilip Paeps Use 'make BACKWARD="backward pacificnew"' to create the link 2255f2fcff28SPhilip Paeps anyway, for now. Eventually we plan to remove the link entirely. 2256f2fcff28SPhilip Paeps 2257f2fcff28SPhilip Paeps tzdata.zi now contains a version-number comment. 2258f2fcff28SPhilip Paeps (Suggested by Tom Lane.) 2259f2fcff28SPhilip Paeps 2260f2fcff28SPhilip Paeps The Makefile now quotes values like BACKWARD more carefully when 2261f2fcff28SPhilip Paeps passing them to the shell. (Problem reported by Zefram.) 2262f2fcff28SPhilip Paeps 2263f2fcff28SPhilip Paeps Builders no longer need to specify -DHAVE_SNPRINTF on platforms 2264f2fcff28SPhilip Paeps that have snprintf and use pre-C99 compilers. (Problem reported 2265f2fcff28SPhilip Paeps by Jon Skeet.) 2266f2fcff28SPhilip Paeps 2267f2fcff28SPhilip Paeps Changes to code 2268f2fcff28SPhilip Paeps 2269f2fcff28SPhilip Paeps zic has a new option -t FILE that specifies the location of the 2270f2fcff28SPhilip Paeps file that determines local time when TZ is unset. The default for 2271f2fcff28SPhilip Paeps this location can be configured via the new TZDEFAULT makefile 2272f2fcff28SPhilip Paeps macro, which defaults to /etc/localtime. 2273f2fcff28SPhilip Paeps 2274f2fcff28SPhilip Paeps Diagnostics and commentary now distinguish UT from UTC more 2275f2fcff28SPhilip Paeps carefully; see theory.html for more information about UT vs UTC. 2276f2fcff28SPhilip Paeps 2277f2fcff28SPhilip Paeps zic has been ported to GCC 8's -Wstringop-truncation option. 2278f2fcff28SPhilip Paeps (Problem reported by Martin Sebor.) 2279f2fcff28SPhilip Paeps 2280f2fcff28SPhilip Paeps Changes to documentation and commentary 2281f2fcff28SPhilip Paeps 2282f2fcff28SPhilip Paeps The zic man page now documents the longstanding behavior that 2283f2fcff28SPhilip Paeps times and years can be out of the usual range, with negative times 2284f2fcff28SPhilip Paeps counting backwards from midnight and with year 0 preceding year 1. 2285f2fcff28SPhilip Paeps (Problem reported by Michael Deckers.) 2286f2fcff28SPhilip Paeps 2287f2fcff28SPhilip Paeps The theory.html file now mentions the POSIX limit of six chars 2288f2fcff28SPhilip Paeps per abbreviation, and lists alphabetic abbreviations used. 2289f2fcff28SPhilip Paeps 2290f2fcff28SPhilip Paeps The files tz-art.htm and tz-link.htm have been renamed to 2291f2fcff28SPhilip Paeps tz-art.html and tz-link.html, respectively, for consistency with 2292f2fcff28SPhilip Paeps other file names and to simplify web server configuration. 2293f2fcff28SPhilip Paeps 2294f2fcff28SPhilip Paeps 22958d7edd17SPhilip PaepsRelease 2017c - 2017-10-20 14:49:34 -0700 22968d7edd17SPhilip Paeps 22978d7edd17SPhilip Paeps Briefly: 22988d7edd17SPhilip Paeps Northern Cyprus switches from +03 to +02/+03 on 2017-10-29. 22998d7edd17SPhilip Paeps Fiji ends DST 2018-01-14, not 2018-01-21. 23008d7edd17SPhilip Paeps Namibia switches from +01/+02 to +02 on 2018-04-01. 23018d7edd17SPhilip Paeps Sudan switches from +03 to +02 on 2017-11-01. 23028d7edd17SPhilip Paeps Tonga likely switches from +13/+14 to +13 on 2017-11-05. 23038d7edd17SPhilip Paeps Turks & Caicos switches from -04 to -05/-04 on 2018-11-04. 23048d7edd17SPhilip Paeps A new file tzdata.zi now holds a small text copy of all data. 23058d7edd17SPhilip Paeps The zic input format has been regularized slightly. 23068d7edd17SPhilip Paeps 23078d7edd17SPhilip Paeps Changes to future timestamps 23088d7edd17SPhilip Paeps 23098d7edd17SPhilip Paeps Northern Cyprus has decided to resume EU rules starting 23108d7edd17SPhilip Paeps 2017-10-29, thus reinstituting winter time. 23118d7edd17SPhilip Paeps 23128d7edd17SPhilip Paeps Fiji ends DST 2018-01-14 instead of the 2018-01-21 previously 23138d7edd17SPhilip Paeps predicted. (Thanks to Dominic Fok.) Adjust future predictions 23148d7edd17SPhilip Paeps accordingly. 23158d7edd17SPhilip Paeps 23168d7edd17SPhilip Paeps Namibia will switch from +01 with DST to +02 all year on 23178d7edd17SPhilip Paeps 2017-09-03 at 02:00. This affects UT offsets starting 2018-04-01 23188d7edd17SPhilip Paeps at 02:00. (Thanks to Steffen Thorsen.) 23198d7edd17SPhilip Paeps 23208d7edd17SPhilip Paeps Sudan will switch from +03 to +02 on 2017-11-01. (Thanks to Ahmed 23218d7edd17SPhilip Paeps Atyya and Yahia Abdalla.) South Sudan is not switching, so 23228d7edd17SPhilip Paeps Africa/Juba is no longer a link to Africa/Khartoum. 23238d7edd17SPhilip Paeps 23248d7edd17SPhilip Paeps Tonga has likely ended its experiment with DST, and will not 23258d7edd17SPhilip Paeps adjust its clocks on 2017-11-05. Although Tonga has not announced 23268d7edd17SPhilip Paeps whether it will continue to observe DST, the IATA is assuming that 23278d7edd17SPhilip Paeps it will not. (Thanks to David Wade.) 23288d7edd17SPhilip Paeps 23298d7edd17SPhilip Paeps Turks & Caicos will switch from -04 all year to -05 with US DST on 23308d7edd17SPhilip Paeps 2018-03-11 at 03:00. This affects UT offsets starting 2018-11-04 23318d7edd17SPhilip Paeps at 02:00. (Thanks to Steffen Thorsen.) 23328d7edd17SPhilip Paeps 23338d7edd17SPhilip Paeps Changes to past timestamps 23348d7edd17SPhilip Paeps 23358d7edd17SPhilip Paeps Namibia switched from +02 to +01 on 1994-03-21, not 1994-04-03. 23368d7edd17SPhilip Paeps (Thanks to Arthur David Olson.) 23378d7edd17SPhilip Paeps 23388d7edd17SPhilip Paeps Detroit did not observe DST in 1967. 23398d7edd17SPhilip Paeps 23408d7edd17SPhilip Paeps Use railway time for Asia/Kolkata before 1941, by switching to 23418d7edd17SPhilip Paeps Madras local time (UT +052110) in 1870, then to IST (UT +0530) in 23428d7edd17SPhilip Paeps 1906. Also, treat 1941-2's +0630 as DST, like 1942-5. 23438d7edd17SPhilip Paeps 23448d7edd17SPhilip Paeps Europe/Dublin's 1946 and 1947 fallback transitions occurred at 23458d7edd17SPhilip Paeps 02:00 standard time, not 02:00 DST. (Thanks to Michael Deckers.) 23468d7edd17SPhilip Paeps 23478d7edd17SPhilip Paeps Pacific/Apia and Pacific/Pago_Pago switched from Antipodean to 23488d7edd17SPhilip Paeps American time in 1892, not 1879. (Thanks to Michael Deckers.) 23498d7edd17SPhilip Paeps 23508d7edd17SPhilip Paeps Adjust the 1867 transition in Alaska to better reflect the 23518d7edd17SPhilip Paeps historical record, by changing it to occur on 1867-10-18 at 15:30 23528d7edd17SPhilip Paeps Sitka time rather than at the start of 1867-10-17 local time. 23538d7edd17SPhilip Paeps Although strictly speaking this is accurate only for Sitka, 23548d7edd17SPhilip Paeps the rest of Alaska's blanks need to be filled in somehow. 23558d7edd17SPhilip Paeps 23568d7edd17SPhilip Paeps Fix off-by-one errors in UT offsets for Adak and Nome before 1867. 23578d7edd17SPhilip Paeps (Thanks to Michael Deckers.) 23588d7edd17SPhilip Paeps 23598d7edd17SPhilip Paeps Add 7 s to the UT offset in Asia/Yangon before 1920. 23608d7edd17SPhilip Paeps 23618d7edd17SPhilip Paeps Changes to zone names 23628d7edd17SPhilip Paeps 23638d7edd17SPhilip Paeps Remove Canada/East-Saskatchewan from the 'backward' file, as it 23648d7edd17SPhilip Paeps exceeded the 14-character limit and was an unused misnomer anyway. 23658d7edd17SPhilip Paeps 23668d7edd17SPhilip Paeps Changes to build procedure 23678d7edd17SPhilip Paeps 23688d7edd17SPhilip Paeps To support applications that prefer to read time zone data in text 23698d7edd17SPhilip Paeps form, two zic input files tzdata.zi and leapseconds are now 23708d7edd17SPhilip Paeps installed by default. The commands 'zic tzdata.zi' and 'zic -L 23718d7edd17SPhilip Paeps leapseconds tzdata.zi' can reproduce the tzdata binary files 23728d7edd17SPhilip Paeps without and with leap seconds, respectively. To prevent these two 23738d7edd17SPhilip Paeps new files from being installed, use 'make TZDATA_TEXT=', and to 23748d7edd17SPhilip Paeps suppress leap seconds from the tzdata text installation, use 'make 23758d7edd17SPhilip Paeps TZDATA_TEXT=tzdata.zi'. 23768d7edd17SPhilip Paeps 23778d7edd17SPhilip Paeps 'make BACKWARD=' now suppresses backward-compatibility names 23788d7edd17SPhilip Paeps like 'US/Pacific' that are defined in the 'backward' and 23798d7edd17SPhilip Paeps 'pacificnew' files. 23808d7edd17SPhilip Paeps 23818d7edd17SPhilip Paeps 'make check' now works on systems that lack a UTF-8 locale, 23828d7edd17SPhilip Paeps or that lack the nsgmls program. Set UTF8_LOCALE to configure 23838d7edd17SPhilip Paeps the name of a UTF-8 locale, if you have one. 23848d7edd17SPhilip Paeps 23858d7edd17SPhilip Paeps Y2K runtime checks are no longer enabled by default. Add 23868d7edd17SPhilip Paeps -DDEPRECATE_TWO_DIGIT_YEARS to CFLAGS to enable them, instead of 23878d7edd17SPhilip Paeps adding -DNO_RUN_TIME_WARNINGS_ABOUT_YEAR_2000_PROBLEMS_THANK_YOU 23888d7edd17SPhilip Paeps to disable them. (New name suggested by Brian Inglis.) 23898d7edd17SPhilip Paeps 23908d7edd17SPhilip Paeps The build procedure for zdump now works on AIX 7.1. 23918d7edd17SPhilip Paeps (Problem reported by Kees Dekker.) 23928d7edd17SPhilip Paeps 23938d7edd17SPhilip Paeps Changes to code 23948d7edd17SPhilip Paeps 23958d7edd17SPhilip Paeps zic and the reference runtime now reject multiple leap seconds 23968d7edd17SPhilip Paeps within 28 days of each other, or leap seconds before the Epoch. 23978d7edd17SPhilip Paeps As a result, support for double leap seconds, which was 23988d7edd17SPhilip Paeps obsolescent and undocumented, has been removed. Double leap 23998d7edd17SPhilip Paeps seconds were an error in the C89 standard; they have never existed 24008d7edd17SPhilip Paeps in civil timekeeping. (Thanks to Robert Elz and Bradley White for 24018d7edd17SPhilip Paeps noticing glitches in the code that uncovered this problem.) 24028d7edd17SPhilip Paeps 24038d7edd17SPhilip Paeps zic now warns about use of the obsolescent and undocumented -y 24048d7edd17SPhilip Paeps option, and about use of the obsolescent TYPE field of Rule lines. 24058d7edd17SPhilip Paeps 24068d7edd17SPhilip Paeps zic now allows unambiguous abbreviations like "Sa" and "Su" for 24078d7edd17SPhilip Paeps weekdays; formerly it rejected them due to a bug. Conversely, zic 24088d7edd17SPhilip Paeps no longer considers non-prefixes to be abbreviations; for example, 24098d7edd17SPhilip Paeps it no longer accepts "lF" as an abbreviation for "lastFriday". 24108d7edd17SPhilip Paeps Also, zic warns about the undocumented usage with a "last-" 24118d7edd17SPhilip Paeps prefix, e.g., "last-Fri". 24128d7edd17SPhilip Paeps 24138d7edd17SPhilip Paeps Similarly, zic now accepts the unambiguous abbreviation "L" for 24148d7edd17SPhilip Paeps "Link" in ordinary context and for "Leap" in leap-second context. 24158d7edd17SPhilip Paeps Conversely, zic no longer accepts non-prefixes such as "La" as 24168d7edd17SPhilip Paeps abbreviations for words like "Leap". 24178d7edd17SPhilip Paeps 24188d7edd17SPhilip Paeps zic no longer accepts leap second lines in ordinary input, or 24198d7edd17SPhilip Paeps ordinary lines in leap second input. Formerly, zic sometimes 24208d7edd17SPhilip Paeps warned about this undocumented usage and handled it incorrectly. 24218d7edd17SPhilip Paeps 24228d7edd17SPhilip Paeps The new macro HAVE_TZNAME governs whether the tzname external 24238d7edd17SPhilip Paeps variable is exported, instead of USG_COMPAT. USG_COMPAT now 24248d7edd17SPhilip Paeps governs only the external variables "timezone" and "daylight". 24258d7edd17SPhilip Paeps This change is needed because the three variables are not in the 24268d7edd17SPhilip Paeps same category: although POSIX requires tzname, it specifies the 24278d7edd17SPhilip Paeps other two variables as optional. Also, USG_COMPAT is now 1 or 0: 24288d7edd17SPhilip Paeps if not defined, the code attempts to guess it from other macros. 24298d7edd17SPhilip Paeps 24308d7edd17SPhilip Paeps localtime.c and difftime.c no longer require stdio.h, and .c files 24318d7edd17SPhilip Paeps other than zic.c no longer require sys/wait.h. 24328d7edd17SPhilip Paeps 24338d7edd17SPhilip Paeps zdump.c no longer assumes snprintf. (Reported by Jonathan Leffler.) 24348d7edd17SPhilip Paeps 24358d7edd17SPhilip Paeps Calculation of time_t extrema works around a bug in GCC 4.8.4 24368d7edd17SPhilip Paeps (Reported by Stan Shebs and Joseph Myers.) 24378d7edd17SPhilip Paeps 24388d7edd17SPhilip Paeps zic.c no longer mistranslates formats of line numbers in non-English 24398d7edd17SPhilip Paeps locales. (Problem reported by Benno Schulenberg.) 24408d7edd17SPhilip Paeps 24418d7edd17SPhilip Paeps Several minor changes have been made to the code to make it a 24428d7edd17SPhilip Paeps bit easier to port to MS-Windows and Solaris. (Thanks to Kees 24438d7edd17SPhilip Paeps Dekker for reporting the problems.) 24448d7edd17SPhilip Paeps 24458d7edd17SPhilip Paeps Changes to documentation and commentary 24468d7edd17SPhilip Paeps 24478d7edd17SPhilip Paeps The two new files 'theory.html' and 'calendars' contain the 24488d7edd17SPhilip Paeps contents of the removed file 'Theory'. The goal is to document 24498d7edd17SPhilip Paeps tzdb theory more accessibly. 24508d7edd17SPhilip Paeps 24518d7edd17SPhilip Paeps The zic man page now documents abbreviation rules. 24528d7edd17SPhilip Paeps 24538d7edd17SPhilip Paeps tz-link.htm now covers how to apply tzdata changes to clients. 24548d7edd17SPhilip Paeps (Thanks to Jorge Fábregas for the AIX link.) It also mentions MySQL. 24558d7edd17SPhilip Paeps 24568d7edd17SPhilip Paeps The leap-seconds.list URL has been updated to something that is 24578d7edd17SPhilip Paeps more reliable for tzdb. (Thanks to Tim Parenti and Brian Inglis.) 24588d7edd17SPhilip Paeps 2459dc135c6eSBaptiste DaroussinRelease 2017b - 2017-03-17 07:30:38 -0700 2460dc135c6eSBaptiste Daroussin 2461dc135c6eSBaptiste Daroussin Briefly: Haiti has resumed DST. 2462dc135c6eSBaptiste Daroussin 2463dc135c6eSBaptiste Daroussin Changes to past and future timestamps 2464dc135c6eSBaptiste Daroussin 2465dc135c6eSBaptiste Daroussin Haiti resumed observance of DST in 2017. (Thanks to Steffen Thorsen.) 2466dc135c6eSBaptiste Daroussin 2467dc135c6eSBaptiste Daroussin Changes to past timestamps 2468dc135c6eSBaptiste Daroussin 2469dc135c6eSBaptiste Daroussin Liberia changed from -004430 to +00 on 1972-01-07, not 1972-05-01. 2470dc135c6eSBaptiste Daroussin 2471dc135c6eSBaptiste Daroussin Use "MMT" to abbreviate Liberia's time zone before 1972, as "-004430" 2472dc135c6eSBaptiste Daroussin is one byte over the POSIX limit. (Problem reported by Derick Rethans.) 2473dc135c6eSBaptiste Daroussin 24748d7edd17SPhilip Paeps Changes to code 24758d7edd17SPhilip Paeps 24768d7edd17SPhilip Paeps The reference localtime implementation now falls back on the 24778d7edd17SPhilip Paeps current US daylight-saving transition rules rather than the 24788d7edd17SPhilip Paeps 1987-2006 rules. This fallback occurs only when (1) the TZ 247989abb9f8SPhilip Paeps environment variable has a value like "AST4ADT" that asks 24808d7edd17SPhilip Paeps for daylight saving time but does not specify the rules, (2) there 24818d7edd17SPhilip Paeps is no file by that name, and (3) the TZDEFRULES file cannot be 24828d7edd17SPhilip Paeps loaded. (Thanks to Tom Lane.) 24838d7edd17SPhilip Paeps 2484dc135c6eSBaptiste Daroussin 2485dc135c6eSBaptiste DaroussinRelease 2017a - 2017-02-28 00:05:36 -0800 2486dc135c6eSBaptiste Daroussin 2487dc135c6eSBaptiste Daroussin Briefly: Southern Chile moves from -04/-03 to -03, and Mongolia 2488dc135c6eSBaptiste Daroussin discontinues DST. 2489dc135c6eSBaptiste Daroussin 2490dc135c6eSBaptiste Daroussin Changes to future timestamps 2491dc135c6eSBaptiste Daroussin 2492dc135c6eSBaptiste Daroussin Mongolia no longer observes DST. (Thanks to Ganbold Tsagaankhuu.) 2493dc135c6eSBaptiste Daroussin 2494dc135c6eSBaptiste Daroussin Chile's Region of Magallanes moves from -04/-03 to -03 year-round. 2495dc135c6eSBaptiste Daroussin Its clocks diverge from America/Santiago starting 2017-05-13 at 2496dc135c6eSBaptiste Daroussin 23:00, hiving off a new zone America/Punta_Arenas. Although the 2497dc135c6eSBaptiste Daroussin Chilean government says this change expires in May 2019, for now 2498dc135c6eSBaptiste Daroussin assume it's permanent. (Thanks to Juan Correa and Deborah 2499dc135c6eSBaptiste Daroussin Goldsmith.) This also affects Antarctica/Palmer. 2500dc135c6eSBaptiste Daroussin 2501dc135c6eSBaptiste Daroussin Changes to past timestamps 2502dc135c6eSBaptiste Daroussin 2503dc135c6eSBaptiste Daroussin Fix many entries for historical timestamps for Europe/Madrid 2504dc135c6eSBaptiste Daroussin before 1979, to agree with tables compiled by Pere Planesas of the 2505dc135c6eSBaptiste Daroussin National Astronomical Observatory of Spain. As a side effect, 2506dc135c6eSBaptiste Daroussin this changes some timestamps for Africa/Ceuta before 1929, which 2507dc135c6eSBaptiste Daroussin are probably guesswork anyway. (Thanks to Steve Allen and 2508dc135c6eSBaptiste Daroussin Pierpaolo Bernardi for the heads-ups, and to Michael Deckers for 2509dc135c6eSBaptiste Daroussin correcting the 1901 transition.) 2510dc135c6eSBaptiste Daroussin 2511dc135c6eSBaptiste Daroussin Ecuador observed DST from 1992-11-28 to 1993-02-05. 2512dc135c6eSBaptiste Daroussin (Thanks to Alois Treindl.) 2513dc135c6eSBaptiste Daroussin 2514dc135c6eSBaptiste Daroussin Asia/Atyrau and Asia/Oral were at +03 (not +04) before 1930-06-21. 2515dc135c6eSBaptiste Daroussin (Thanks to Stepan Golosunov.) 2516dc135c6eSBaptiste Daroussin 2517dc135c6eSBaptiste Daroussin Changes to past and future time zone abbreviations 2518dc135c6eSBaptiste Daroussin 2519dc135c6eSBaptiste Daroussin Switch to numeric time zone abbreviations for South America, as 2520dc135c6eSBaptiste Daroussin part of the ongoing project of removing invented abbreviations. 2521dc135c6eSBaptiste Daroussin This avoids the need to invent an abbreviation for the new Chilean 2522dc135c6eSBaptiste Daroussin new zone. Similarly, switch from invented to numeric time zone 2523dc135c6eSBaptiste Daroussin abbreviations for Afghanistan, American Samoa, the Azores, 2524dc135c6eSBaptiste Daroussin Bangladesh, Bhutan, the British Indian Ocean Territory, Brunei, 2525dc135c6eSBaptiste Daroussin Cape Verde, Chatham Is, Christmas I, Cocos (Keeling) Is, Cook Is, 2526dc135c6eSBaptiste Daroussin Dubai, East Timor, Eucla, Fiji, French Polynesia, Greenland, 2527dc135c6eSBaptiste Daroussin Indochina, Iran, Iraq, Kiribati, Lord Howe, Macquarie, Malaysia, 2528dc135c6eSBaptiste Daroussin the Maldives, Marshall Is, Mauritius, Micronesia, Mongolia, 2529dc135c6eSBaptiste Daroussin Myanmar, Nauru, Nepal, New Caledonia, Niue, Norfolk I, Palau, 2530dc135c6eSBaptiste Daroussin Papua New Guinea, the Philippines, Pitcairn, Qatar, Réunion, St 2531dc135c6eSBaptiste Daroussin Pierre & Miquelon, Samoa, Saudi Arabia, Seychelles, Singapore, 2532dc135c6eSBaptiste Daroussin Solomon Is, Tokelau, Tuvalu, Wake, Vanuatu, Wallis & Futuna, and 2533dc135c6eSBaptiste Daroussin Xinjiang; for 20-minute daylight saving time in Ghana before 1943; 2534dc135c6eSBaptiste Daroussin for half-hour daylight saving time in Belize before 1944 and in 2535dc135c6eSBaptiste Daroussin the Dominican Republic before 1975; and for Canary Islands before 2536dc135c6eSBaptiste Daroussin 1946, for Guinea-Bissau before 1975, for Iceland before 1969, for 2537dc135c6eSBaptiste Daroussin Indian Summer Time before 1942, for Indonesia before around 1964, 2538dc135c6eSBaptiste Daroussin for Kenya before 1960, for Liberia before 1973, for Madeira before 2539dc135c6eSBaptiste Daroussin 1967, for Namibia before 1943, for the Netherlands in 1937-9, for 2540dc135c6eSBaptiste Daroussin Pakistan before 1971, for Western Sahara before 1977, and for 2541dc135c6eSBaptiste Daroussin Zaporozhye in 1880-1924. 2542dc135c6eSBaptiste Daroussin 2543dc135c6eSBaptiste Daroussin For Alaska time from 1900 through 1967, instead of "CAT" use the 2544dc135c6eSBaptiste Daroussin abbreviation "AST", the abbreviation commonly used at the time 2545dc135c6eSBaptiste Daroussin (Atlantic Standard Time had not been standardized yet). Use "AWT" 2546dc135c6eSBaptiste Daroussin and "APT" instead of the invented abbreviations "CAWT" and "CAPT". 2547dc135c6eSBaptiste Daroussin 2548dc135c6eSBaptiste Daroussin Use "CST" and "CDT" instead of invented abbreviations for Macau 2549dc135c6eSBaptiste Daroussin before 1999 and Taiwan before 1938, and use "JST" instead of the 2550dc135c6eSBaptiste Daroussin invented abbreviation "JCST" for Japan and Korea before 1938. 2551dc135c6eSBaptiste Daroussin 2552dc135c6eSBaptiste Daroussin Change to database entry category 2553dc135c6eSBaptiste Daroussin 2554dc135c6eSBaptiste Daroussin Move the Pacific/Johnston link from 'australasia' to 'backward', 2555dc135c6eSBaptiste Daroussin since Johnston is now uninhabited. 2556dc135c6eSBaptiste Daroussin 2557dc135c6eSBaptiste Daroussin Changes to code 2558dc135c6eSBaptiste Daroussin 2559dc135c6eSBaptiste Daroussin zic no longer mishandles some transitions in January 2038 when it 2560dc135c6eSBaptiste Daroussin attempts to work around Qt bug 53071. This fixes a bug affecting 2561dc135c6eSBaptiste Daroussin Pacific/Tongatapu that was introduced in zic 2016e. localtime.c 2562dc135c6eSBaptiste Daroussin now contains a workaround, useful when loading a file generated by 2563dc135c6eSBaptiste Daroussin a buggy zic. (Problem and localtime.c fix reported by Bradley 2564dc135c6eSBaptiste Daroussin White.) 2565dc135c6eSBaptiste Daroussin 2566dc135c6eSBaptiste Daroussin zdump -i now outputs non-hour numeric time zone abbreviations 2567dc135c6eSBaptiste Daroussin without a colon, e.g., "+0530" rather than "+05:30". This agrees 2568dc135c6eSBaptiste Daroussin with zic %z and with common practice, and simplifies auditing of 2569dc135c6eSBaptiste Daroussin zdump output. 2570dc135c6eSBaptiste Daroussin 2571dc135c6eSBaptiste Daroussin zdump is now buildable again with -DUSE_LTZ=0. 2572dc135c6eSBaptiste Daroussin (Problem reported by Joseph Myers.) 2573dc135c6eSBaptiste Daroussin 2574dc135c6eSBaptiste Daroussin zdump.c now always includes private.h, to avoid code duplication 2575dc135c6eSBaptiste Daroussin with private.h. (Problem reported by Kees Dekker.) 2576dc135c6eSBaptiste Daroussin 2577dc135c6eSBaptiste Daroussin localtime.c no longer mishandles early or late timestamps 2578dc135c6eSBaptiste Daroussin when TZ is set to a POSIX-style string that specifies DST. 2579dc135c6eSBaptiste Daroussin (Problem reported by Kees Dekker.) 2580dc135c6eSBaptiste Daroussin 2581dc135c6eSBaptiste Daroussin date and strftime now cause %z to generate "-0000" instead of 2582dc135c6eSBaptiste Daroussin "+0000" when the UT offset is zero and the time zone abbreviation 2583dc135c6eSBaptiste Daroussin begins with "-". 2584dc135c6eSBaptiste Daroussin 2585dc135c6eSBaptiste Daroussin Changes to documentation and commentary 2586dc135c6eSBaptiste Daroussin 2587dc135c6eSBaptiste Daroussin The 'Theory' file now better documents choice of historical time 2588dc135c6eSBaptiste Daroussin zone abbreviations. (Problems reported by Michael Deckers.) 2589dc135c6eSBaptiste Daroussin 2590dc135c6eSBaptiste Daroussin tz-link.htm now covers leap smearing, which is popular in clouds. 2591dc135c6eSBaptiste Daroussin 2592dc135c6eSBaptiste Daroussin 2593e350c46aSBaptiste DaroussinRelease 2016j - 2016-11-22 23:17:13 -0800 2594e350c46aSBaptiste Daroussin 2595e350c46aSBaptiste Daroussin Briefly: Saratov, Russia moves from +03 to +04 on 2016-12-04. 2596e350c46aSBaptiste Daroussin 2597e350c46aSBaptiste Daroussin Changes to future timestamps 2598e350c46aSBaptiste Daroussin 2599e350c46aSBaptiste Daroussin Saratov, Russia switches from +03 to +04 on 2016-12-04 at 02:00. 2600e350c46aSBaptiste Daroussin This hives off a new zone Europe/Saratov from Europe/Volgograd. 2601e350c46aSBaptiste Daroussin (Thanks to Yuri Konotopov and Stepan Golosunov.) 2602e350c46aSBaptiste Daroussin 2603e350c46aSBaptiste Daroussin Changes to past timestamps 2604e350c46aSBaptiste Daroussin 2605e350c46aSBaptiste Daroussin The new zone Asia/Atyrau for Atyraū Region, Kazakhstan, is like 2606dc135c6eSBaptiste Daroussin Asia/Aqtau except it switched from +05/+06 to +04/+05 in spring 2607e350c46aSBaptiste Daroussin 1999, not fall 1994. (Thanks to Stepan Golosunov.) 2608e350c46aSBaptiste Daroussin 2609e350c46aSBaptiste Daroussin Changes to past time zone abbreviations 2610e350c46aSBaptiste Daroussin 2611e350c46aSBaptiste Daroussin Asia/Gaza and Asia/Hebron now use "EEST", not "EET", to denote 2612e350c46aSBaptiste Daroussin summer time before 1948. The old use of "EET" was a typo. 2613e350c46aSBaptiste Daroussin 2614e350c46aSBaptiste Daroussin Changes to code 2615e350c46aSBaptiste Daroussin 2616e350c46aSBaptiste Daroussin zic no longer mishandles file systems that lack hard links, fixing 2617e350c46aSBaptiste Daroussin bugs introduced in 2016g. (Problems reported by Tom Lane.) 2618e350c46aSBaptiste Daroussin Also, when the destination already contains symbolic links, zic 2619e350c46aSBaptiste Daroussin should now work better on systems where the 'link' system call 2620e350c46aSBaptiste Daroussin does not follow symbolic links. 2621e350c46aSBaptiste Daroussin 2622e350c46aSBaptiste Daroussin Changes to documentation and commentary 2623e350c46aSBaptiste Daroussin 2624e350c46aSBaptiste Daroussin tz-link.htm now documents the relationship between release version 2625e350c46aSBaptiste Daroussin numbers and development-repository commit tags. (Suggested by 2626e350c46aSBaptiste Daroussin Paul Koning.) 2627e350c46aSBaptiste Daroussin 2628e350c46aSBaptiste Daroussin The 'Theory' file now documents UT. 2629e350c46aSBaptiste Daroussin 2630e350c46aSBaptiste Daroussin iso3166.tab now accents "Curaçao", and commentary now mentions 2631e350c46aSBaptiste Daroussin the names "Cabo Verde" and "Czechia". (Thanks to Jiří Boháč.) 2632e350c46aSBaptiste Daroussin 2633e350c46aSBaptiste Daroussin 2634ba2b2efdSGlen BarberRelease 2016i - 2016-11-01 23:19:52 -0700 2635ba2b2efdSGlen Barber 2636ba2b2efdSGlen Barber Briefly: Cyprus split into two time zones on 2016-10-30, and Tonga 2637ba2b2efdSGlen Barber reintroduces DST on 2016-11-06. 2638ba2b2efdSGlen Barber 2639ba2b2efdSGlen Barber Changes to future timestamps 2640ba2b2efdSGlen Barber 2641ba2b2efdSGlen Barber Pacific/Tongatapu begins DST on 2016-11-06 at 02:00, ending on 2642ba2b2efdSGlen Barber 2017-01-15 at 03:00. Assume future observances in Tonga will be 2643ba2b2efdSGlen Barber from the first Sunday in November through the third Sunday in 2644ba2b2efdSGlen Barber January, like Fiji. (Thanks to Pulu ʻAnau.) Switch to numeric 2645ba2b2efdSGlen Barber time zone abbreviations for this zone. 2646ba2b2efdSGlen Barber 2647ba2b2efdSGlen Barber Changes to past and future timestamps 2648ba2b2efdSGlen Barber 2649ba2b2efdSGlen Barber Northern Cyprus is now +03 year round, causing a split in Cyprus 2650ba2b2efdSGlen Barber time zones starting 2016-10-30 at 04:00. This creates a zone 2651ba2b2efdSGlen Barber Asia/Famagusta. (Thanks to Even Scharning and Matt Johnson.) 2652ba2b2efdSGlen Barber 2653ba2b2efdSGlen Barber Antarctica/Casey switched from +08 to +11 on 2016-10-22. 2654ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) 2655ba2b2efdSGlen Barber 2656ba2b2efdSGlen Barber Changes to past timestamps 2657ba2b2efdSGlen Barber 2658ba2b2efdSGlen Barber Several corrections were made for pre-1975 timestamps in Italy. 2659ba2b2efdSGlen Barber These affect Europe/Malta, Europe/Rome, Europe/San_Marino, and 2660ba2b2efdSGlen Barber Europe/Vatican. 2661ba2b2efdSGlen Barber 2662ba2b2efdSGlen Barber First, the 1893-11-01 00:00 transition in Italy used the new UT 2663ba2b2efdSGlen Barber offset (+01), not the old (+00:49:56). (Thanks to Michael 2664ba2b2efdSGlen Barber Deckers.) 2665ba2b2efdSGlen Barber 2666ba2b2efdSGlen Barber Second, rules for daylight saving in Italy were changed to agree 2667ba2b2efdSGlen Barber with Italy's National Institute of Metrological Research (INRiM) 2668ba2b2efdSGlen Barber except for 1944, as follows (thanks to Pierpaolo Bernardi, Brian 2669ba2b2efdSGlen Barber Inglis, and Michael Deckers): 2670ba2b2efdSGlen Barber 2671ba2b2efdSGlen Barber The 1916-06-03 transition was at 24:00, not 00:00. 2672ba2b2efdSGlen Barber 2673ba2b2efdSGlen Barber The 1916-10-01, 1919-10-05, and 1920-09-19 transitions were at 2674ba2b2efdSGlen Barber 00:00, not 01:00. 2675ba2b2efdSGlen Barber 2676ba2b2efdSGlen Barber The 1917-09-30 and 1918-10-06 transitions were at 24:00, not 2677ba2b2efdSGlen Barber 01:00. 2678ba2b2efdSGlen Barber 2679ba2b2efdSGlen Barber The 1944-09-17 transition was at 03:00, not 01:00. This 2680ba2b2efdSGlen Barber particular change is taken from Italian law as INRiM's table, 2681ba2b2efdSGlen Barber (which says 02:00) appears to have a typo here. Also, keep the 2682ba2b2efdSGlen Barber 1944-04-03 transition for Europe/Rome, as Rome was controlled by 2683ba2b2efdSGlen Barber Germany then. 2684ba2b2efdSGlen Barber 2685ba2b2efdSGlen Barber The 1967-1970 and 1972-1974 fallback transitions were at 01:00, 2686ba2b2efdSGlen Barber not 00:00. 2687ba2b2efdSGlen Barber 2688ba2b2efdSGlen Barber Changes to code 2689ba2b2efdSGlen Barber 2690ba2b2efdSGlen Barber The code should now be buildable on AmigaOS merely by setting the 2691ba2b2efdSGlen Barber appropriate Makefile variables. (From a patch by Carsten Larsen.) 2692ba2b2efdSGlen Barber 2693ba2b2efdSGlen Barber 2694ba2b2efdSGlen BarberRelease 2016h - 2016-10-19 23:17:57 -0700 2695ba2b2efdSGlen Barber 2696ba2b2efdSGlen Barber Changes to future timestamps 2697ba2b2efdSGlen Barber 2698ba2b2efdSGlen Barber Asia/Gaza and Asia/Hebron end DST on 2016-10-29 at 01:00, not 2699ba2b2efdSGlen Barber 2016-10-21 at 00:00. (Thanks to Sharef Mustafa.) Predict that 2700ba2b2efdSGlen Barber future fall transitions will be on the last Saturday of October 2701ba2b2efdSGlen Barber at 01:00, which is consistent with predicted spring transitions 2702ba2b2efdSGlen Barber on the last Saturday of March. (Thanks to Tim Parenti.) 2703ba2b2efdSGlen Barber 2704ba2b2efdSGlen Barber Changes to past timestamps 2705ba2b2efdSGlen Barber 2706ba2b2efdSGlen Barber In Turkey, transitions in 1986-1990 were at 01:00 standard time 2707ba2b2efdSGlen Barber not at 02:00, and the spring 1994 transition was on March 20, not 2708ba2b2efdSGlen Barber March 27. (Thanks to Kıvanç Yazan.) 2709ba2b2efdSGlen Barber 2710ba2b2efdSGlen Barber Changes to past and future time zone abbreviations 2711ba2b2efdSGlen Barber 2712ba2b2efdSGlen Barber Asia/Colombo now uses numeric time zone abbreviations like "+0530" 2713ba2b2efdSGlen Barber instead of alphabetic ones like "IST" and "LKT". Various 2714ba2b2efdSGlen Barber English-language sources use "IST", "LKT" and "SLST", with no 2715ba2b2efdSGlen Barber working consensus. (Usage of "SLST" mentioned by Sadika 2716ba2b2efdSGlen Barber Sumanapala.) 2717ba2b2efdSGlen Barber 2718ba2b2efdSGlen Barber Changes to code 2719ba2b2efdSGlen Barber 2720ba2b2efdSGlen Barber zic no longer mishandles relativizing file names when creating 2721ba2b2efdSGlen Barber symbolic links like /etc/localtime, when these symbolic links 2722ba2b2efdSGlen Barber are outside the usual directory hierarchy. This fixes a bug 2723ba2b2efdSGlen Barber introduced in 2016g. (Problem reported by Andreas Stieger.) 2724ba2b2efdSGlen Barber 2725ba2b2efdSGlen Barber Changes to build procedure 2726ba2b2efdSGlen Barber 2727ba2b2efdSGlen Barber New rules 'traditional_tarballs' and 'traditional_signatures' for 2728ba2b2efdSGlen Barber building just the traditional-format distribution. (Requested by 2729ba2b2efdSGlen Barber Deborah Goldsmith.) 2730ba2b2efdSGlen Barber 2731ba2b2efdSGlen Barber The file 'version' is now put into the tzdata tarball too. 2732ba2b2efdSGlen Barber (Requested by Howard Hinnant.) 2733ba2b2efdSGlen Barber 2734ba2b2efdSGlen Barber Changes to documentation and commentary 2735ba2b2efdSGlen Barber 2736ba2b2efdSGlen Barber The 'Theory' file now has a section on interface stability. 2737ba2b2efdSGlen Barber (Requested by Paul Koning.) It also mentions features like 2738ba2b2efdSGlen Barber tm_zone and localtime_rz that have long been supported by the 2739ba2b2efdSGlen Barber reference code. 2740ba2b2efdSGlen Barber 2741ba2b2efdSGlen Barber tz-link.htm has improved coverage of time zone boundaries suitable 2742ba2b2efdSGlen Barber for geolocation. (Thanks to heads-ups from Evan Siroky and Matt 2743ba2b2efdSGlen Barber Johnson.) 2744ba2b2efdSGlen Barber 2745ba2b2efdSGlen Barber The US commentary now mentions Allen and the "day of two noons". 2746ba2b2efdSGlen Barber 2747ba2b2efdSGlen Barber The Fiji commentary mentions the government's 2016-10-03 press 2748ba2b2efdSGlen Barber release. (Thanks to Raymond Kumar.) 2749ba2b2efdSGlen Barber 2750ba2b2efdSGlen Barber 2751ba2b2efdSGlen BarberRelease 2016g - 2016-09-13 08:56:38 -0700 2752ba2b2efdSGlen Barber 2753ba2b2efdSGlen Barber Changes to future timestamps 2754ba2b2efdSGlen Barber 2755ba2b2efdSGlen Barber Turkey switched from EET/EEST (+02/+03) to permanent +03, 2756ba2b2efdSGlen Barber effective 2016-09-07. (Thanks to Burak AYDIN.) Use "+03" rather 2757ba2b2efdSGlen Barber than an invented abbreviation for the new time. 2758ba2b2efdSGlen Barber 2759ba2b2efdSGlen Barber New leap second 2016-12-31 23:59:60 UTC as per IERS Bulletin C 52. 2760ba2b2efdSGlen Barber (Thanks to Tim Parenti.) 2761ba2b2efdSGlen Barber 2762ba2b2efdSGlen Barber Changes to past timestamps 2763ba2b2efdSGlen Barber 2764ba2b2efdSGlen Barber For America/Los_Angeles, spring-forward transition times have been 2765ba2b2efdSGlen Barber corrected from 02:00 to 02:01 in 1948, and from 02:00 to 01:00 in 2766ba2b2efdSGlen Barber 1950-1966. 2767ba2b2efdSGlen Barber 2768ba2b2efdSGlen Barber For zones using Soviet time on 1919-07-01, transitions to UT-based 2769ba2b2efdSGlen Barber time were at 00:00 UT, not at 02:00 local time. The affected 2770ba2b2efdSGlen Barber zones are Europe/Kirov, Europe/Moscow, Europe/Samara, and 2771ba2b2efdSGlen Barber Europe/Ulyanovsk. (Thanks to Alexander Belopolsky.) 2772ba2b2efdSGlen Barber 2773ba2b2efdSGlen Barber Changes to past and future time zone abbreviations 2774ba2b2efdSGlen Barber 2775ba2b2efdSGlen Barber The Factory zone now uses the time zone abbreviation -00 instead 2776ba2b2efdSGlen Barber of a long English-language string, as -00 is now the normal way to 2777ba2b2efdSGlen Barber represent an undefined time zone. 2778ba2b2efdSGlen Barber 2779ba2b2efdSGlen Barber Several zones in Antarctica and the former Soviet Union, along 2780ba2b2efdSGlen Barber with zones intended for ships at sea that cannot use POSIX TZ 2781ba2b2efdSGlen Barber strings, now use numeric time zone abbreviations instead of 2782ba2b2efdSGlen Barber invented or obsolete alphanumeric abbreviations. The affected 2783ba2b2efdSGlen Barber zones are Antarctica/Casey, Antarctica/Davis, 2784ba2b2efdSGlen Barber Antarctica/DumontDUrville, Antarctica/Mawson, Antarctica/Rothera, 2785ba2b2efdSGlen Barber Antarctica/Syowa, Antarctica/Troll, Antarctica/Vostok, 2786ba2b2efdSGlen Barber Asia/Anadyr, Asia/Ashgabat, Asia/Baku, Asia/Bishkek, Asia/Chita, 2787ba2b2efdSGlen Barber Asia/Dushanbe, Asia/Irkutsk, Asia/Kamchatka, Asia/Khandyga, 2788ba2b2efdSGlen Barber Asia/Krasnoyarsk, Asia/Magadan, Asia/Omsk, Asia/Sakhalin, 2789ba2b2efdSGlen Barber Asia/Samarkand, Asia/Srednekolymsk, Asia/Tashkent, Asia/Tbilisi, 2790ba2b2efdSGlen Barber Asia/Ust-Nera, Asia/Vladivostok, Asia/Yakutsk, Asia/Yekaterinburg, 2791ba2b2efdSGlen Barber Asia/Yerevan, Etc/GMT-14, Etc/GMT-13, Etc/GMT-12, Etc/GMT-11, 2792ba2b2efdSGlen Barber Etc/GMT-10, Etc/GMT-9, Etc/GMT-8, Etc/GMT-7, Etc/GMT-6, Etc/GMT-5, 2793ba2b2efdSGlen Barber Etc/GMT-4, Etc/GMT-3, Etc/GMT-2, Etc/GMT-1, Etc/GMT+1, Etc/GMT+2, 2794ba2b2efdSGlen Barber Etc/GMT+3, Etc/GMT+4, Etc/GMT+5, Etc/GMT+6, Etc/GMT+7, Etc/GMT+8, 2795ba2b2efdSGlen Barber Etc/GMT+9, Etc/GMT+10, Etc/GMT+11, Etc/GMT+12, Europe/Kaliningrad, 2796ba2b2efdSGlen Barber Europe/Minsk, Europe/Samara, Europe/Volgograd, and 2797ba2b2efdSGlen Barber Indian/Kerguelen. For Europe/Moscow the invented abbreviation MSM 2798ba2b2efdSGlen Barber was replaced by +05, whereas MSK and MSD were kept as they are not 2799ba2b2efdSGlen Barber our invention and are widely used. 2800ba2b2efdSGlen Barber 2801ba2b2efdSGlen Barber Changes to zone names 2802ba2b2efdSGlen Barber 2803ba2b2efdSGlen Barber Rename Asia/Rangoon to Asia/Yangon, with a backward compatibility link. 2804ba2b2efdSGlen Barber (Thanks to David Massoud.) 2805ba2b2efdSGlen Barber 2806ba2b2efdSGlen Barber Changes to code 2807ba2b2efdSGlen Barber 2808ba2b2efdSGlen Barber zic no longer generates binary files containing POSIX TZ-like 2809ba2b2efdSGlen Barber strings that disagree with the local time type after the last 2810ba2b2efdSGlen Barber explicit transition in the data. This fixes a bug with 281189abb9f8SPhilip Paeps Africa/Casablanca and Africa/El_Aaiun in some year-2037 timestamps 281289abb9f8SPhilip Paeps on the reference platform. (Thanks to Alexander Belopolsky for 281389abb9f8SPhilip Paeps reporting the bug and suggesting a way forward.) 2814ba2b2efdSGlen Barber 2815ba2b2efdSGlen Barber If the installed localtime and/or posixrules files are symbolic 2816ba2b2efdSGlen Barber links, zic now keeps them symbolic links when updating them, for 2817ba2b2efdSGlen Barber compatibility with platforms like OpenSUSE where other programs 2818ba2b2efdSGlen Barber configure these files as symlinks. 2819ba2b2efdSGlen Barber 2820ba2b2efdSGlen Barber zic now avoids hard linking to symbolic links, avoids some 2821ba2b2efdSGlen Barber unnecessary mkdir and stat system calls, and uses shorter file 2822ba2b2efdSGlen Barber names internally. 2823ba2b2efdSGlen Barber 2824ba2b2efdSGlen Barber zdump has a new -i option to generate transitions in a 2825259e2ad7SPhilip Paeps smaller but still human-readable format. This option is 2826ba2b2efdSGlen Barber experimental, and the output format may change in future versions. 2827ba2b2efdSGlen Barber (Thanks to Jon Skeet for suggesting that an option was needed, 2828ba2b2efdSGlen Barber and thanks to Tim Parenti and Chris Rovick for further comments.) 2829ba2b2efdSGlen Barber 2830ba2b2efdSGlen Barber Changes to build procedure 2831ba2b2efdSGlen Barber 2832ba2b2efdSGlen Barber An experimental distribution format is available, in addition 2833ba2b2efdSGlen Barber to the traditional format which will continue to be distributed. 2834ba2b2efdSGlen Barber The new format is a tarball tzdb-VERSION.tar.lz with signature 2835ba2b2efdSGlen Barber file tzdb-VERSION.tar.lz.asc. It unpacks to a top-level directory 2836ba2b2efdSGlen Barber tzdb-VERSION containing the code and data of the traditional 2837ba2b2efdSGlen Barber two-tarball format, along with extra data that may be useful. 2838ba2b2efdSGlen Barber (Thanks to Antonio Diaz Diaz, Oscar van Vlijmen, and many others 2839ba2b2efdSGlen Barber for comments about the experimental format.) 2840ba2b2efdSGlen Barber 2841ba2b2efdSGlen Barber The release version number is now more accurate in the usual case 2842ba2b2efdSGlen Barber where releases are built from a Git repository. For example, if 2843ba2b2efdSGlen Barber 23 commits and some working-file changes have been made since 2844ba2b2efdSGlen Barber release 2016g, the version number is now something like 2845ba2b2efdSGlen Barber '2016g-23-g50556e3-dirty' instead of the misleading '2016g'. 2846e350c46aSBaptiste Daroussin Tagged releases use the same version number format as before, 2847259e2ad7SPhilip Paeps e.g., '2016g'. To support the more accurate version number, its 2848ba2b2efdSGlen Barber specification has moved from a line in the Makefile to a new 2849ba2b2efdSGlen Barber source file 'version'. 2850ba2b2efdSGlen Barber 2851ba2b2efdSGlen Barber The experimental distribution contains a file to2050.tzs that 2852ba2b2efdSGlen Barber contains what should be the output of 'zdump -i -c 2050' on 2853ba2b2efdSGlen Barber primary zones. If this file is available, 'make check' now checks 2854ba2b2efdSGlen Barber that zdump generates this output. 2855ba2b2efdSGlen Barber 2856ba2b2efdSGlen Barber 'make check_web' now works on Fedora-like distributions. 2857ba2b2efdSGlen Barber 2858ba2b2efdSGlen Barber Changes to documentation and commentary 2859ba2b2efdSGlen Barber 2860ba2b2efdSGlen Barber tzfile.5 now documents the new restriction on POSIX TZ-like 2861ba2b2efdSGlen Barber strings that is now implemented by zic. 2862ba2b2efdSGlen Barber 2863ba2b2efdSGlen Barber Comments now cite URLs for some 1917-1921 Russian DST decrees. 2864ba2b2efdSGlen Barber (Thanks to Alexander Belopolsky.) 2865ba2b2efdSGlen Barber 2866ba2b2efdSGlen Barber tz-link.htm mentions JuliaTime (thanks to Curtis Vogt) and Time4J 2867ba2b2efdSGlen Barber (thanks to Meno Hochschild) and ThreeTen-Extra, and its 2868ba2b2efdSGlen Barber description of Java 8 has been brought up to date (thanks to 2869ba2b2efdSGlen Barber Stephen Colebourne). Its description of local time on Mars has 2870ba2b2efdSGlen Barber been updated to match current practice, and URLs have been updated 2871ba2b2efdSGlen Barber and some obsolete ones removed. 2872ba2b2efdSGlen Barber 2873ba2b2efdSGlen Barber 2874ba2b2efdSGlen BarberRelease 2016f - 2016-07-05 16:26:51 +0200 2875ba2b2efdSGlen Barber 2876ba2b2efdSGlen Barber Changes affecting future timestamps 2877ba2b2efdSGlen Barber 2878ba2b2efdSGlen Barber The Egyptian government changed its mind on short notice, and 2879ba2b2efdSGlen Barber Africa/Cairo will not introduce DST starting 2016-07-07 after all. 2880ba2b2efdSGlen Barber (Thanks to Mina Samuel.) 2881ba2b2efdSGlen Barber 2882ba2b2efdSGlen Barber Asia/Novosibirsk switches from +06 to +07 on 2016-07-24 at 02:00. 2883ba2b2efdSGlen Barber (Thanks to Stepan Golosunov.) 2884ba2b2efdSGlen Barber 2885ba2b2efdSGlen Barber Changes to past and future timestamps 2886ba2b2efdSGlen Barber 2887ba2b2efdSGlen Barber Asia/Novokuznetsk and Asia/Novosibirsk now use numeric time zone 2888ba2b2efdSGlen Barber abbreviations instead of invented ones. 2889ba2b2efdSGlen Barber 2890ba2b2efdSGlen Barber Changes affecting past timestamps 2891ba2b2efdSGlen Barber 2892ba2b2efdSGlen Barber Europe/Minsk's 1992-03-29 spring-forward transition was at 02:00 not 00:00. 2893ba2b2efdSGlen Barber (Thanks to Stepan Golosunov.) 2894ba2b2efdSGlen Barber 2895ba2b2efdSGlen Barber 2896ba2b2efdSGlen BarberRelease 2016e - 2016-06-14 08:46:16 -0700 2897ba2b2efdSGlen Barber 2898ba2b2efdSGlen Barber Changes affecting future timestamps 2899ba2b2efdSGlen Barber 2900ba2b2efdSGlen Barber Africa/Cairo observes DST in 2016 from July 7 to the end of October. 2901ba2b2efdSGlen Barber Guess October 27 and 24:00 transitions. (Thanks to Steffen Thorsen.) 2902ba2b2efdSGlen Barber For future years, guess April's last Thursday to October's last 2903ba2b2efdSGlen Barber Thursday except for Ramadan. 2904ba2b2efdSGlen Barber 2905ba2b2efdSGlen Barber Changes affecting past timestamps 2906ba2b2efdSGlen Barber 2907ba2b2efdSGlen Barber Locations while uninhabited now use '-00', not 'zzz', as a 2908ba2b2efdSGlen Barber placeholder time zone abbreviation. This is inspired by Internet 2909ba2b2efdSGlen Barber RFC 3339 and is more consistent with numeric time zone 2910ba2b2efdSGlen Barber abbreviations already used elsewhere. The change affects several 2911ba2b2efdSGlen Barber arctic and antarctic locations, e.g., America/Cambridge_Bay before 2912ba2b2efdSGlen Barber 1920 and Antarctica/Troll before 2005. 2913ba2b2efdSGlen Barber 2914ba2b2efdSGlen Barber Asia/Baku's 1992-09-27 transition from +04 (DST) to +04 (non-DST) was 2915ba2b2efdSGlen Barber at 03:00, not 23:00 the previous day. (Thanks to Michael Deckers.) 2916ba2b2efdSGlen Barber 2917ba2b2efdSGlen Barber Changes to code 2918ba2b2efdSGlen Barber 2919ba2b2efdSGlen Barber zic now outputs a dummy transition at time 2**31 - 1 in zones 2920ba2b2efdSGlen Barber whose POSIX-style TZ strings contain a '<'. This mostly works 2921ba2b2efdSGlen Barber around Qt bug 53071 <https://bugreports.qt.io/browse/QTBUG-53071>. 2922ba2b2efdSGlen Barber (Thanks to Zhanibek Adilbekov for reporting the Qt bug.) 2923ba2b2efdSGlen Barber 2924ba2b2efdSGlen Barber Changes affecting documentation and commentary 2925ba2b2efdSGlen Barber 2926ba2b2efdSGlen Barber tz-link.htm says why governments should give plenty of notice for 2927ba2b2efdSGlen Barber time zone or DST changes, and refers to Matt Johnson's blog post. 2928ba2b2efdSGlen Barber 2929ba2b2efdSGlen Barber tz-link.htm mentions Tzdata for Elixir. (Thanks to Matt Johnson.) 2930ba2b2efdSGlen Barber 2931ba2b2efdSGlen Barber 2932ba2b2efdSGlen BarberRelease 2016d - 2016-04-17 22:50:29 -0700 2933ba2b2efdSGlen Barber 2934ba2b2efdSGlen Barber Changes affecting future timestamps 2935ba2b2efdSGlen Barber 2936ba2b2efdSGlen Barber America/Caracas switches from -0430 to -04 on 2016-05-01 at 02:30. 2937ba2b2efdSGlen Barber (Thanks to Alexander Krivenyshev for the heads-up.) 2938ba2b2efdSGlen Barber 2939ba2b2efdSGlen Barber Asia/Magadan switches from +10 to +11 on 2016-04-24 at 02:00. 2940ba2b2efdSGlen Barber (Thanks to Alexander Krivenyshev and Matt Johnson.) 2941ba2b2efdSGlen Barber 2942ba2b2efdSGlen Barber New zone Asia/Tomsk, split off from Asia/Novosibirsk. It covers 2943ba2b2efdSGlen Barber Tomsk Oblast, Russia, which switches from +06 to +07 on 2016-05-29 2944ba2b2efdSGlen Barber at 02:00. (Thanks to Stepan Golosunov.) 2945ba2b2efdSGlen Barber 2946ba2b2efdSGlen Barber Changes affecting past timestamps 2947ba2b2efdSGlen Barber 2948ba2b2efdSGlen Barber New zone Europe/Kirov, split off from Europe/Volgograd. It covers 2949ba2b2efdSGlen Barber Kirov Oblast, Russia, which switched from +04/+05 to +03/+04 on 2950ba2b2efdSGlen Barber 1989-03-26 at 02:00, roughly a year after Europe/Volgograd made 2951ba2b2efdSGlen Barber the same change. (Thanks to Stepan Golosunov.) 2952ba2b2efdSGlen Barber 2953ba2b2efdSGlen Barber Russia and nearby locations had daylight-saving transitions on 2954ba2b2efdSGlen Barber 1992-03-29 at 02:00 and 1992-09-27 at 03:00, instead of on 2955ba2b2efdSGlen Barber 1992-03-28 at 23:00 and 1992-09-26 at 23:00. (Thanks to Stepan 2956ba2b2efdSGlen Barber Golosunov.) 2957ba2b2efdSGlen Barber 2958ba2b2efdSGlen Barber Many corrections to historical time in Kazakhstan from 1991 2959ba2b2efdSGlen Barber through 2005. (Thanks to Stepan Golosunov.) Replace Kazakhstan's 2960ba2b2efdSGlen Barber invented time zone abbreviations with numeric abbreviations. 2961ba2b2efdSGlen Barber 2962ba2b2efdSGlen Barber Changes to commentary 2963ba2b2efdSGlen Barber 2964ba2b2efdSGlen Barber Mention Internet RFCs 7808 (TZDIST) and 7809 (CalDAV time zone references). 2965ba2b2efdSGlen Barber 2966ba2b2efdSGlen Barber 2967ba2b2efdSGlen BarberRelease 2016c - 2016-03-23 00:51:27 -0700 2968ba2b2efdSGlen Barber 2969ba2b2efdSGlen Barber Changes affecting future timestamps 2970ba2b2efdSGlen Barber 2971ba2b2efdSGlen Barber Azerbaijan no longer observes DST. (Thanks to Steffen Thorsen.) 2972ba2b2efdSGlen Barber 2973ba2b2efdSGlen Barber Chile reverts from permanent to seasonal DST. (Thanks to Juan 2974ba2b2efdSGlen Barber Correa for the heads-up, and to Tim Parenti for corrections.) 2975ba2b2efdSGlen Barber Guess that future transitions are August's and May's second 2976ba2b2efdSGlen Barber Saturdays at 24:00 mainland time. Also, call the period from 2977ba2b2efdSGlen Barber 2014-09-07 through 2016-05-14 daylight saving time instead of 2978ba2b2efdSGlen Barber standard time, as that seems more appropriate now. 2979ba2b2efdSGlen Barber 2980ba2b2efdSGlen Barber Changes affecting past timestamps 2981ba2b2efdSGlen Barber 2982ba2b2efdSGlen Barber Europe/Kaliningrad and Europe/Vilnius changed from +03/+04 to 2983ba2b2efdSGlen Barber +02/+03 on 1989-03-26, not 1991-03-31. Europe/Volgograd changed 2984ba2b2efdSGlen Barber from +04/+05 to +03/+04 on 1988-03-27, not 1989-03-26. 2985ba2b2efdSGlen Barber (Thanks to Stepan Golosunov.) 2986ba2b2efdSGlen Barber 2987ba2b2efdSGlen Barber Changes to commentary 2988ba2b2efdSGlen Barber 2989ba2b2efdSGlen Barber Several updates and URLs for historical and proposed Russian changes. 2990ba2b2efdSGlen Barber (Thanks to Stepan Golosunov, Matt Johnson, and Alexander Krivenyshev.) 2991ba2b2efdSGlen Barber 2992ba2b2efdSGlen Barber 2993ba2b2efdSGlen BarberRelease 2016b - 2016-03-12 17:30:14 -0800 2994ba2b2efdSGlen Barber 2995ba2b2efdSGlen Barber Compatibility note 2996ba2b2efdSGlen Barber 2997ba2b2efdSGlen Barber Starting with release 2016b, some data entries cause zic implementations 2998ba2b2efdSGlen Barber derived from tz releases 2005j through 2015e to issue warnings like 2999ba2b2efdSGlen Barber "time zone abbreviation differs from POSIX standard (+03)". 3000ba2b2efdSGlen Barber These warnings should not otherwise affect zic's output and can safely be 3001ba2b2efdSGlen Barber ignored on today's platforms, as the warnings refer to a restriction in 3002ba2b2efdSGlen Barber POSIX.1-1988 that was removed in POSIX.1-2001. One way to suppress the 3003ba2b2efdSGlen Barber warnings is to upgrade to zic derived from tz releases 2015f and later. 3004ba2b2efdSGlen Barber 3005ba2b2efdSGlen Barber Changes affecting future timestamps 3006ba2b2efdSGlen Barber 3007ba2b2efdSGlen Barber New zones Europe/Astrakhan and Europe/Ulyanovsk for Astrakhan and 3008ba2b2efdSGlen Barber Ulyanovsk Oblasts, Russia, both of which will switch from +03 to +04 on 3009ba2b2efdSGlen Barber 2016-03-27 at 02:00 local time. They need distinct zones since their 3010ba2b2efdSGlen Barber post-1970 histories disagree. New zone Asia/Barnaul for Altai Krai and 3011ba2b2efdSGlen Barber Altai Republic, Russia, which will switch from +06 to +07 on the same date 3012ba2b2efdSGlen Barber and local time. The Astrakhan change is already official; the others have 3013ba2b2efdSGlen Barber passed the first reading in the State Duma and are extremely likely. 3014ba2b2efdSGlen Barber Also, Asia/Sakhalin moves from +10 to +11 on 2016-03-27 at 02:00. 3015ba2b2efdSGlen Barber (Thanks to Alexander Krivenyshev for the heads-up, and to Matt Johnson 3016ba2b2efdSGlen Barber and Stepan Golosunov for followup.) 3017ba2b2efdSGlen Barber 3018ba2b2efdSGlen Barber As a trial of a new system that needs less information to be made up, 3019ba2b2efdSGlen Barber the new zones use numeric time zone abbreviations like "+04" 3020ba2b2efdSGlen Barber instead of invented abbreviations like "ASTT". 3021ba2b2efdSGlen Barber 3022ba2b2efdSGlen Barber Haiti will not observe DST in 2016. (Thanks to Jean Antoine via 3023ba2b2efdSGlen Barber Steffen Thorsen.) 3024ba2b2efdSGlen Barber 3025ba2b2efdSGlen Barber Palestine's spring-forward transition on 2016-03-26 is at 01:00, not 00:00. 3026ba2b2efdSGlen Barber (Thanks to Hannah Kreitem.) Guess future transitions will be March's last 3027ba2b2efdSGlen Barber Saturday at 01:00, not March's last Friday at 24:00. 3028ba2b2efdSGlen Barber 3029ba2b2efdSGlen Barber Changes affecting past timestamps 3030ba2b2efdSGlen Barber 3031ba2b2efdSGlen Barber Europe/Chisinau observed DST during 1990, and switched from +04 to 3032ba2b2efdSGlen Barber +03 at 1990-05-06 02:00, instead of switching from +03 to +02. 3033ba2b2efdSGlen Barber (Thanks to Stepan Golosunov.) 3034ba2b2efdSGlen Barber 3035ba2b2efdSGlen Barber 1991 abbreviations in Europe/Samara should be SAMT/SAMST, not 3036ba2b2efdSGlen Barber KUYT/KUYST. (Thanks to Stepan Golosunov.) 3037ba2b2efdSGlen Barber 3038ba2b2efdSGlen Barber Changes to code 3039ba2b2efdSGlen Barber 3040ba2b2efdSGlen Barber tzselect's diagnostics and checking, and checktab.awk's checking, 3041ba2b2efdSGlen Barber have been improved. (Thanks to J William Piggott.) 3042ba2b2efdSGlen Barber 3043ba2b2efdSGlen Barber tzcode now builds under MinGW. (Thanks to Ian Abbott and Esben Haabendal.) 3044ba2b2efdSGlen Barber 3045ba2b2efdSGlen Barber tzselect now tests Julian-date TZ settings more accurately. 3046ba2b2efdSGlen Barber (Thanks to J William Piggott.) 3047ba2b2efdSGlen Barber 3048ba2b2efdSGlen Barber Changes to commentary 3049ba2b2efdSGlen Barber 3050ba2b2efdSGlen Barber Comments in zone tables have been improved. (Thanks to J William Piggott.) 3051ba2b2efdSGlen Barber 3052ba2b2efdSGlen Barber tzselect again limits its menu comments so that menus fit on a 305346bee4edSPhilip Paeps 24×80 alphanumeric display. 3054ba2b2efdSGlen Barber 3055ba2b2efdSGlen Barber A new web page tz-how-to.html. (Thanks to Bill Seymour.) 3056ba2b2efdSGlen Barber 3057ba2b2efdSGlen Barber In the Theory file, the description of possible time zone abbreviations in 3058ba2b2efdSGlen Barber tzdata has been cleaned up, as the old description was unclear and 3059ba2b2efdSGlen Barber inconsistent. (Thanks to Alain Mouette for reporting the problem.) 3060ba2b2efdSGlen Barber 3061ba2b2efdSGlen Barber 3062ba2b2efdSGlen BarberRelease 2016a - 2016-01-26 23:28:02 -0800 3063ba2b2efdSGlen Barber 3064ba2b2efdSGlen Barber Changes affecting future timestamps 3065ba2b2efdSGlen Barber 3066ba2b2efdSGlen Barber America/Cayman will not observe daylight saving this year after all. 3067ba2b2efdSGlen Barber Revert our guess that it would. (Thanks to Matt Johnson.) 3068ba2b2efdSGlen Barber 3069ba2b2efdSGlen Barber Asia/Chita switches from +0800 to +0900 on 2016-03-27 at 02:00. 3070ba2b2efdSGlen Barber (Thanks to Alexander Krivenyshev.) 3071ba2b2efdSGlen Barber 3072ba2b2efdSGlen Barber Asia/Tehran now has DST predictions for the year 2038 and later, 3073ba2b2efdSGlen Barber to be March 21 00:00 to September 21 00:00. This is likely better 3074ba2b2efdSGlen Barber than predicting no DST, albeit off by a day every now and then. 3075ba2b2efdSGlen Barber 3076ba2b2efdSGlen Barber Changes affecting past and future timestamps 3077ba2b2efdSGlen Barber 3078ba2b2efdSGlen Barber America/Metlakatla switched from PST all year to AKST/AKDT on 3079ba2b2efdSGlen Barber 2015-11-01 at 02:00. (Thanks to Steffen Thorsen.) 3080ba2b2efdSGlen Barber 3081ba2b2efdSGlen Barber America/Santa_Isabel has been removed, and replaced with a 3082ba2b2efdSGlen Barber backward compatibility link to America/Tijuana. Its contents were 3083ba2b2efdSGlen Barber apparently based on a misreading of Mexican legislation. 3084ba2b2efdSGlen Barber 3085ba2b2efdSGlen Barber Changes affecting past timestamps 3086ba2b2efdSGlen Barber 3087ba2b2efdSGlen Barber Asia/Karachi's two transition times in 2002 were off by a minute. 3088ba2b2efdSGlen Barber (Thanks to Matt Johnson.) 3089ba2b2efdSGlen Barber 3090ba2b2efdSGlen Barber Changes affecting build procedure 3091ba2b2efdSGlen Barber 3092ba2b2efdSGlen Barber An installer can now combine leap seconds with use of the backzone file, 3093ba2b2efdSGlen Barber e.g., with 'make PACKRATDATA=backzone REDO=posix_right zones'. 3094ba2b2efdSGlen Barber The old 'make posix_packrat' rule is now marked as obsolescent. 3095ba2b2efdSGlen Barber (Thanks to Ian Abbott for an initial implementation.) 3096ba2b2efdSGlen Barber 3097ba2b2efdSGlen Barber Changes affecting documentation and commentary 3098ba2b2efdSGlen Barber 3099ba2b2efdSGlen Barber A new file LICENSE makes it easier to see that the code and data 3100ba2b2efdSGlen Barber are mostly public-domain. (Thanks to James Knight.) The three 3101ba2b2efdSGlen Barber non-public-domain files now use the current (3-clause) BSD license 3102ba2b2efdSGlen Barber instead of older versions of that license. 3103ba2b2efdSGlen Barber 3104ba2b2efdSGlen Barber tz-link.htm mentions the BDE library (thanks to Andrew Paprocki), 3105ba2b2efdSGlen Barber CCTZ (thanks to Tim Parenti), TimeJones.com, and has a new section 3106ba2b2efdSGlen Barber on editing tz source files (with a mention of Sublime zoneinfo, 3107ba2b2efdSGlen Barber thanks to Gilmore Davidson). 3108ba2b2efdSGlen Barber 3109ba2b2efdSGlen Barber The Theory and asia files now mention the 2015 book "The Global 3110ba2b2efdSGlen Barber Transformation of Time, 1870-1950", and cite a couple of reviews. 3111ba2b2efdSGlen Barber 3112ba2b2efdSGlen Barber The America/Chicago entry now documents the informal use of US 3113ba2b2efdSGlen Barber central time in Fort Pierre, South Dakota. (Thanks to Rick 3114ba2b2efdSGlen Barber McDermid, Matt Johnson, and Steve Jones.) 3115ba2b2efdSGlen Barber 3116ba2b2efdSGlen Barber 3117ba2b2efdSGlen BarberRelease 2015g - 2015-10-01 00:39:51 -0700 3118ba2b2efdSGlen Barber 3119ba2b2efdSGlen Barber Changes affecting future timestamps 3120ba2b2efdSGlen Barber 3121ba2b2efdSGlen Barber Turkey's 2015 fall-back transition is scheduled for Nov. 8, not Oct. 25. 3122ba2b2efdSGlen Barber (Thanks to Fatih.) 3123ba2b2efdSGlen Barber 3124ba2b2efdSGlen Barber Norfolk moves from +1130 to +1100 on 2015-10-04 at 02:00 local time. 3125ba2b2efdSGlen Barber (Thanks to Alexander Krivenyshev.) 3126ba2b2efdSGlen Barber 3127ba2b2efdSGlen Barber Fiji's 2016 fall-back transition is scheduled for January 17, not 24. 3128ba2b2efdSGlen Barber (Thanks to Ken Rylander.) 3129ba2b2efdSGlen Barber 3130ba2b2efdSGlen Barber Fort Nelson, British Columbia will not fall back on 2015-11-01. It has 3131ba2b2efdSGlen Barber effectively been on MST (-0700) since it advanced its clocks on 2015-03-08. 3132ba2b2efdSGlen Barber New zone America/Fort_Nelson. (Thanks to Matt Johnson.) 3133ba2b2efdSGlen Barber 3134ba2b2efdSGlen Barber Changes affecting past timestamps 3135ba2b2efdSGlen Barber 3136ba2b2efdSGlen Barber Norfolk observed DST from 1974-10-27 02:00 to 1975-03-02 02:00. 3137ba2b2efdSGlen Barber 3138ba2b2efdSGlen Barber Changes affecting code 3139ba2b2efdSGlen Barber 3140ba2b2efdSGlen Barber localtime no longer mishandles America/Anchorage after 2037. 3141ba2b2efdSGlen Barber (Thanks to Bradley White for reporting the bug.) 3142ba2b2efdSGlen Barber 3143ba2b2efdSGlen Barber On hosts with signed 32-bit time_t, localtime no longer mishandles 3144ba2b2efdSGlen Barber Pacific/Fiji after 2038-01-16 14:00 UTC. 3145ba2b2efdSGlen Barber 3146ba2b2efdSGlen Barber The localtime module allows the variables 'timezone', 'daylight', 3147ba2b2efdSGlen Barber and 'altzone' to be in common storage shared with other modules, 3148ba2b2efdSGlen Barber and declares them in case the system <time.h> does not. 3149ba2b2efdSGlen Barber (Problems reported by Kees Dekker.) 3150ba2b2efdSGlen Barber 3151ba2b2efdSGlen Barber On platforms with tm_zone, strftime.c now assumes it is not NULL. 3152ba2b2efdSGlen Barber This simplifies the code and is consistent with zdump.c. 3153ba2b2efdSGlen Barber (Problem reported by Christos Zoulas.) 3154ba2b2efdSGlen Barber 3155ba2b2efdSGlen Barber Changes affecting documentation 3156ba2b2efdSGlen Barber 3157ba2b2efdSGlen Barber The tzfile man page now documents that transition times denote the 3158ba2b2efdSGlen Barber starts (not the ends) of the corresponding time periods. 3159ba2b2efdSGlen Barber (Ambiguity reported by Bill Seymour.) 3160ba2b2efdSGlen Barber 3161ba2b2efdSGlen Barber 3162ba2b2efdSGlen BarberRelease 2015f - 2015-08-10 18:06:56 -0700 3163ba2b2efdSGlen Barber 3164ba2b2efdSGlen Barber Changes affecting future timestamps 3165ba2b2efdSGlen Barber 3166ba2b2efdSGlen Barber North Korea switches to +0830 on 2015-08-15. (Thanks to Steffen Thorsen.) 3167ba2b2efdSGlen Barber The abbreviation remains "KST". (Thanks to Robert Elz.) 3168ba2b2efdSGlen Barber 3169ba2b2efdSGlen Barber Uruguay no longer observes DST. (Thanks to Steffen Thorsen 3170ba2b2efdSGlen Barber and Pablo Camargo.) 3171ba2b2efdSGlen Barber 3172ba2b2efdSGlen Barber Changes affecting past and future timestamps 3173ba2b2efdSGlen Barber 3174ba2b2efdSGlen Barber Moldova starts and ends DST at 00:00 UTC, not at 01:00 UTC. 3175ba2b2efdSGlen Barber (Thanks to Roman Tudos.) 3176ba2b2efdSGlen Barber 3177ba2b2efdSGlen Barber Changes affecting data format and code 3178ba2b2efdSGlen Barber 3179ba2b2efdSGlen Barber zic's '-y YEARISTYPE' option is no longer documented. The TYPE 3180ba2b2efdSGlen Barber field of a Rule line should now be '-'; the old values 'even', 3181ba2b2efdSGlen Barber 'odd', 'uspres', 'nonpres', 'nonuspres' were already undocumented. 3182ba2b2efdSGlen Barber Although the implementation has not changed, these features do not 3183ba2b2efdSGlen Barber work in the default installation, they are not used in the data, 3184ba2b2efdSGlen Barber and they are now considered obsolescent. 3185ba2b2efdSGlen Barber 3186ba2b2efdSGlen Barber zic now checks that two rules don't take effect at the same time. 3187ba2b2efdSGlen Barber (Thanks to Jon Skeet and Arthur David Olson.) Constraints on 3188ba2b2efdSGlen Barber simultaneity are now documented. 3189ba2b2efdSGlen Barber 3190f2fcff28SPhilip Paeps The two characters '%z' in a zone format now stand for the UT 3191f2fcff28SPhilip Paeps offset, e.g., '-07' for seven hours behind UT and '+0530' for 3192ba2b2efdSGlen Barber five hours and thirty minutes ahead. This better supports time 3193ba2b2efdSGlen Barber zone abbreviations conforming to POSIX.1-2001 and later. 3194ba2b2efdSGlen Barber 3195ba2b2efdSGlen Barber Changes affecting installed data files 3196ba2b2efdSGlen Barber 3197ba2b2efdSGlen Barber Comments for America/Halifax and America/Glace_Bay have been improved. 3198ba2b2efdSGlen Barber (Thanks to Brian Inglis.) 3199ba2b2efdSGlen Barber 3200ba2b2efdSGlen Barber Data entries have been simplified for Atlantic/Canary, Europe/Simferopol, 3201ba2b2efdSGlen Barber Europe/Sofia, and Europe/Tallinn. This yields slightly smaller 3202ba2b2efdSGlen Barber installed data files for Europe/Simferopol and Europe/Tallinn. 3203ba2b2efdSGlen Barber It does not affect timestamps. (Thanks to Howard Hinnant.) 3204ba2b2efdSGlen Barber 3205ba2b2efdSGlen Barber Changes affecting code 3206ba2b2efdSGlen Barber 3207ba2b2efdSGlen Barber zdump and zic no longer warn about valid time zone abbreviations 3208ba2b2efdSGlen Barber like '-05'. 3209ba2b2efdSGlen Barber 3210ba2b2efdSGlen Barber Some Visual Studio 2013 warnings have been suppressed. 3211ba2b2efdSGlen Barber (Thanks to Kees Dekker.) 3212ba2b2efdSGlen Barber 3213ba2b2efdSGlen Barber 'date' no longer sets the time of day and its -a, -d, -n and -t 3214ba2b2efdSGlen Barber options have been removed. Long obsolescent, the implementation 3215ba2b2efdSGlen Barber of these features had porting problems. Builders no longer need 3216ba2b2efdSGlen Barber to configure HAVE_ADJTIME, HAVE_SETTIMEOFDAY, or HAVE_UTMPX_H. 3217ba2b2efdSGlen Barber (Thanks to Kees Dekker for pointing out the problem.) 3218ba2b2efdSGlen Barber 3219ba2b2efdSGlen Barber Changes affecting documentation 3220ba2b2efdSGlen Barber 3221ba2b2efdSGlen Barber The Theory file mentions naming issues earlier, as these seem to be 3222ba2b2efdSGlen Barber poorly publicized (thanks to Gilmore Davidson for reporting the problem). 3223ba2b2efdSGlen Barber 3224ba2b2efdSGlen Barber tz-link.htm mentions Time Zone Database Parser (thanks to Howard Hinnant). 3225ba2b2efdSGlen Barber 3226ba2b2efdSGlen Barber Mention that Herbert Samuel introduced the term "Summer Time". 3227ba2b2efdSGlen Barber 3228ba2b2efdSGlen Barber 3229ba2b2efdSGlen BarberRelease 2015e - 2015-06-13 10:56:02 -0700 3230ba2b2efdSGlen Barber 3231ba2b2efdSGlen Barber Changes affecting future timestamps 3232ba2b2efdSGlen Barber 3233ba2b2efdSGlen Barber Morocco will suspend DST from 2015-06-14 03:00 through 2015-07-19 02:00, 3234ba2b2efdSGlen Barber not 06-13 and 07-18 as we had guessed. (Thanks to Milamber.) 3235ba2b2efdSGlen Barber 3236ba2b2efdSGlen Barber Assume Cayman Islands will observe DST starting next year, using US rules. 3237ba2b2efdSGlen Barber Although it isn't guaranteed, it is the most likely. 3238ba2b2efdSGlen Barber 3239ba2b2efdSGlen Barber Changes affecting data format 3240ba2b2efdSGlen Barber 3241ba2b2efdSGlen Barber The file 'iso3166.tab' now uses UTF-8, so that its entries can better 3242ba2b2efdSGlen Barber spell the names of Åland Islands, Côte d'Ivoire, and Réunion. 3243ba2b2efdSGlen Barber 3244ba2b2efdSGlen Barber Changes affecting code 3245ba2b2efdSGlen Barber 3246ba2b2efdSGlen Barber When displaying data, tzselect converts it to the current locale's 3247ba2b2efdSGlen Barber encoding if the iconv command works. (Problem reported by random832.) 3248ba2b2efdSGlen Barber 3249ba2b2efdSGlen Barber tzselect no longer mishandles Dominica, fixing a bug introduced 3250ba2b2efdSGlen Barber in Release 2014f. (Problem reported by Owen Leibman.) 3251ba2b2efdSGlen Barber 3252ba2b2efdSGlen Barber zic -l no longer fails when compiled with -DTZDEFAULT=\"/etc/localtime\". 3253ba2b2efdSGlen Barber This fixes a bug introduced in Release 2014f. 3254ba2b2efdSGlen Barber (Problem reported by Leonardo Chiquitto.) 3255ba2b2efdSGlen Barber 3256ba2b2efdSGlen Barber 3257ba2b2efdSGlen BarberRelease 2015d - 2015-04-24 08:09:46 -0700 3258ba2b2efdSGlen Barber 3259ba2b2efdSGlen Barber Changes affecting future timestamps 3260ba2b2efdSGlen Barber 3261ba2b2efdSGlen Barber Egypt will not observe DST in 2015 and will consider canceling it 3262ba2b2efdSGlen Barber permanently. For now, assume no DST indefinitely. 3263ba2b2efdSGlen Barber (Thanks to Ahmed Nazmy and Tim Parenti.) 3264ba2b2efdSGlen Barber 3265ba2b2efdSGlen Barber Changes affecting past timestamps 3266ba2b2efdSGlen Barber 3267ba2b2efdSGlen Barber America/Whitehorse switched from UT -09 to -08 on 1967-05-28, not 3268ba2b2efdSGlen Barber 1966-07-01. Also, Yukon's time zone history is documented better. 3269ba2b2efdSGlen Barber (Thanks to Brian Inglis and Dennis Ferguson.) 3270ba2b2efdSGlen Barber 3271ba2b2efdSGlen Barber Change affecting past and future time zone abbreviations 3272ba2b2efdSGlen Barber 3273ba2b2efdSGlen Barber The abbreviations for Hawaii-Aleutian standard and daylight times 3274ba2b2efdSGlen Barber have been changed from HAST/HADT to HST/HDT, as per US Government 3275ba2b2efdSGlen Barber Printing Office style. This affects only America/Adak since 1983, 3276ba2b2efdSGlen Barber as America/Honolulu was already using the new style. 3277ba2b2efdSGlen Barber 3278ba2b2efdSGlen Barber Changes affecting code 3279ba2b2efdSGlen Barber 3280ba2b2efdSGlen Barber zic has some minor performance improvements. 3281ba2b2efdSGlen Barber 3282ba2b2efdSGlen Barber 3283ba2b2efdSGlen BarberRelease 2015c - 2015-04-11 08:55:55 -0700 3284ba2b2efdSGlen Barber 3285ba2b2efdSGlen Barber Changes affecting future timestamps 3286ba2b2efdSGlen Barber 3287ba2b2efdSGlen Barber Egypt's spring-forward transition is at 24:00 on April's last Thursday, 3288ba2b2efdSGlen Barber not 00:00 on April's last Friday. 2015's transition will therefore be on 3289ba2b2efdSGlen Barber Thursday, April 30 at 24:00, not Friday, April 24 at 00:00. Similar fixes 3290ba2b2efdSGlen Barber apply to 2026, 2037, 2043, etc. (Thanks to Steffen Thorsen.) 3291ba2b2efdSGlen Barber 3292ba2b2efdSGlen Barber Changes affecting past timestamps 3293ba2b2efdSGlen Barber 3294ba2b2efdSGlen Barber The following changes affect some pre-1991 Chile-related timestamps 3295ba2b2efdSGlen Barber in America/Santiago, Antarctica/Palmer, and Pacific/Easter. 3296ba2b2efdSGlen Barber 3297ba2b2efdSGlen Barber The 1910 transition was January 10, not January 1. 3298ba2b2efdSGlen Barber 3299ba2b2efdSGlen Barber The 1918 transition was September 10, not September 1. 3300ba2b2efdSGlen Barber 3301ba2b2efdSGlen Barber The UT -04 time observed from 1932 to 1942 is now considered to 3302ba2b2efdSGlen Barber be standard time, not year-round DST. 3303ba2b2efdSGlen Barber 3304ba2b2efdSGlen Barber Santiago observed DST (UT -03) from 1946-07-15 through 3305ba2b2efdSGlen Barber 1946-08-31, then reverted to standard time, then switched to -05 3306ba2b2efdSGlen Barber on 1947-04-01. 3307ba2b2efdSGlen Barber 3308ba2b2efdSGlen Barber Assume transitions before 1968 were at 00:00, since we have no data 3309ba2b2efdSGlen Barber saying otherwise. 3310ba2b2efdSGlen Barber 3311ba2b2efdSGlen Barber The spring 1988 transition was 1988-10-09, not 1988-10-02. 3312ba2b2efdSGlen Barber The fall 1990 transition was 1990-03-11, not 1990-03-18. 3313ba2b2efdSGlen Barber 3314f2fcff28SPhilip Paeps Assume no UT offset change for Pacific/Easter on 1890-01-01, 3315ba2b2efdSGlen Barber and omit all transitions on Pacific/Easter from 1942 through 1946 3316ba2b2efdSGlen Barber since we have no data suggesting that they existed. 3317ba2b2efdSGlen Barber 3318ba2b2efdSGlen Barber One more zone has been turned into a link, as it differed 3319ba2b2efdSGlen Barber from an existing zone only for older timestamps. As usual, 3320f2fcff28SPhilip Paeps this change affects UT offsets in pre-1970 timestamps only. 3321ba2b2efdSGlen Barber The zone's old contents have been moved to the 'backzone' file. 3322ba2b2efdSGlen Barber The affected zone is America/Montreal. 3323ba2b2efdSGlen Barber 3324ba2b2efdSGlen Barber Changes affecting commentary 3325ba2b2efdSGlen Barber 3326ba2b2efdSGlen Barber Mention the TZUpdater tool. 3327ba2b2efdSGlen Barber 3328ba2b2efdSGlen Barber Mention "The Time Now". (Thanks to Brandon Ramsey.) 3329ba2b2efdSGlen Barber 3330ba2b2efdSGlen Barber 3331ba2b2efdSGlen BarberRelease 2015b - 2015-03-19 23:28:11 -0700 3332ba2b2efdSGlen Barber 3333ba2b2efdSGlen Barber Changes affecting future timestamps 3334ba2b2efdSGlen Barber 3335ba2b2efdSGlen Barber Mongolia will start observing DST again this year, from the last 3336ba2b2efdSGlen Barber Saturday in March at 02:00 to the last Saturday in September at 00:00. 3337ba2b2efdSGlen Barber (Thanks to Ganbold Tsagaankhuu.) 3338ba2b2efdSGlen Barber 3339ba2b2efdSGlen Barber Palestine will start DST on March 28, not March 27. Also, 3340ba2b2efdSGlen Barber correct the fall 2014 transition from September 26 to October 24. 3341ba2b2efdSGlen Barber Adjust future predictions accordingly. (Thanks to Steffen Thorsen.) 3342ba2b2efdSGlen Barber 3343ba2b2efdSGlen Barber Changes affecting past timestamps 3344ba2b2efdSGlen Barber 3345ba2b2efdSGlen Barber The 1982 zone shift in Pacific/Easter has been corrected, fixing a 2015a 3346ba2b2efdSGlen Barber regression. (Thanks to Stuart Bishop for reporting the problem.) 3347ba2b2efdSGlen Barber 3348ba2b2efdSGlen Barber Some more zones have been turned into links, when they differed 3349ba2b2efdSGlen Barber from existing zones only for older timestamps. As usual, 3350f2fcff28SPhilip Paeps these changes affect UT offsets in pre-1970 timestamps only. 3351ba2b2efdSGlen Barber Their old contents have been moved to the 'backzone' file. 3352ba2b2efdSGlen Barber The affected zones are: America/Antigua, America/Cayman, 3353ba2b2efdSGlen Barber Pacific/Midway, and Pacific/Saipan. 3354ba2b2efdSGlen Barber 3355ba2b2efdSGlen Barber Changes affecting time zone abbreviations 3356ba2b2efdSGlen Barber 3357ba2b2efdSGlen Barber Correct the 1992-2010 DST abbreviation in Volgograd from "MSK" to "MSD". 3358ba2b2efdSGlen Barber (Thanks to Hank W.) 3359ba2b2efdSGlen Barber 3360ba2b2efdSGlen Barber Changes affecting code 3361ba2b2efdSGlen Barber 3362ba2b2efdSGlen Barber Fix integer overflow bug in reference 'mktime' implementation. 3363ba2b2efdSGlen Barber (Problem reported by Jörg Richter.) 3364ba2b2efdSGlen Barber 3365ba2b2efdSGlen Barber Allow -Dtime_tz=time_t compilations, and allow -Dtime_tz=... libraries 3366ba2b2efdSGlen Barber to be used in the same executable as standard-library time_t functions. 3367ba2b2efdSGlen Barber (Problems reported by Bradley White.) 3368ba2b2efdSGlen Barber 3369ba2b2efdSGlen Barber Changes affecting commentary 3370ba2b2efdSGlen Barber 3371ba2b2efdSGlen Barber Cite the recent Mexican decree changing Quintana Roo's time zone. 3372ba2b2efdSGlen Barber (Thanks to Carlos Raúl Perasso.) 3373ba2b2efdSGlen Barber 3374ba2b2efdSGlen Barber Likewise for the recent Chilean decree. (Thanks to Eduardo Romero Urra.) 3375ba2b2efdSGlen Barber 3376ba2b2efdSGlen Barber Update info about Mars time. 3377ba2b2efdSGlen Barber 3378ba2b2efdSGlen Barber 3379ba2b2efdSGlen BarberRelease 2015a - 2015-01-29 22:35:20 -0800 3380ba2b2efdSGlen Barber 3381ba2b2efdSGlen Barber Changes affecting future timestamps 3382ba2b2efdSGlen Barber 3383ba2b2efdSGlen Barber The Mexican state of Quintana Roo, represented by America/Cancun, 3384ba2b2efdSGlen Barber will shift from Central Time with DST to Eastern Time without DST 3385ba2b2efdSGlen Barber on 2015-02-01 at 02:00. (Thanks to Steffen Thorsen and Gwillim Law.) 3386ba2b2efdSGlen Barber 3387ba2b2efdSGlen Barber Chile will not change clocks in April or thereafter; its new standard time 3388ba2b2efdSGlen Barber will be its old daylight saving time. This affects America/Santiago, 3389ba2b2efdSGlen Barber Pacific/Easter, and Antarctica/Palmer. (Thanks to Juan Correa.) 3390ba2b2efdSGlen Barber 3391ba2b2efdSGlen Barber New leap second 2015-06-30 23:59:60 UTC as per IERS Bulletin C 49. 3392ba2b2efdSGlen Barber (Thanks to Tim Parenti.) 3393ba2b2efdSGlen Barber 3394ba2b2efdSGlen Barber Changes affecting past timestamps 3395ba2b2efdSGlen Barber 3396ba2b2efdSGlen Barber Iceland observed DST in 1919 and 1921, and its 1939 fallback 3397ba2b2efdSGlen Barber transition was Oct. 29, not Nov. 29. Remove incorrect data from 3398ba2b2efdSGlen Barber Shanks about time in Iceland between 1837 and 1908. 3399ba2b2efdSGlen Barber 3400ba2b2efdSGlen Barber Some more zones have been turned into links, when they differed 3401ba2b2efdSGlen Barber from existing zones only for older timestamps. As usual, 3402f2fcff28SPhilip Paeps these changes affect UT offsets in pre-1970 timestamps only. 3403ba2b2efdSGlen Barber Their old contents have been moved to the 'backzone' file. 3404ba2b2efdSGlen Barber The affected zones are: Asia/Aden, Asia/Bahrain, Asia/Kuwait, 3405ba2b2efdSGlen Barber and Asia/Muscat. 3406ba2b2efdSGlen Barber 3407ba2b2efdSGlen Barber Changes affecting code 3408ba2b2efdSGlen Barber 3409ba2b2efdSGlen Barber tzalloc now scrubs time zone abbreviations compatibly with the way 3410ba2b2efdSGlen Barber that tzset always has, by replacing invalid bytes with '_' and by 3411ba2b2efdSGlen Barber shortening too-long abbreviations. 3412ba2b2efdSGlen Barber 3413ba2b2efdSGlen Barber tzselect ports to POSIX awk implementations, no longer mishandles 3414ba2b2efdSGlen Barber POSIX TZ settings when GNU awk is used, and reports POSIX TZ 3415ba2b2efdSGlen Barber settings to the user. (Thanks to Stefan Kuhn.) 3416ba2b2efdSGlen Barber 3417ba2b2efdSGlen Barber Changes affecting build procedure 3418ba2b2efdSGlen Barber 3419ba2b2efdSGlen Barber 'make check' now checks for links to links in the data. 3420ba2b2efdSGlen Barber One such link (for Africa/Asmera) has been fixed. 3421ba2b2efdSGlen Barber (Thanks to Stephen Colebourne for pointing out the problem.) 3422ba2b2efdSGlen Barber 3423ba2b2efdSGlen Barber Changes affecting commentary 3424ba2b2efdSGlen Barber 3425ba2b2efdSGlen Barber The leapseconds file commentary now mentions the expiration date. 3426ba2b2efdSGlen Barber (Problem reported by Martin Burnicki.) 3427ba2b2efdSGlen Barber 3428ba2b2efdSGlen Barber Update Mexican Library of Congress URL. 3429ba2b2efdSGlen Barber 3430ba2b2efdSGlen Barber 3431ba2b2efdSGlen BarberRelease 2014j - 2014-11-10 17:37:11 -0800 3432ba2b2efdSGlen Barber 3433ba2b2efdSGlen Barber Changes affecting current and future timestamps 3434ba2b2efdSGlen Barber 3435ba2b2efdSGlen Barber Turks & Caicos' switch from US eastern time to UT -04 year-round 3436ba2b2efdSGlen Barber did not occur on 2014-11-02 at 02:00. It's currently scheduled 3437ba2b2efdSGlen Barber for 2015-11-01 at 02:00. (Thanks to Chris Walton.) 3438ba2b2efdSGlen Barber 3439ba2b2efdSGlen Barber Changes affecting past timestamps 3440ba2b2efdSGlen Barber 3441ba2b2efdSGlen Barber Many pre-1989 timestamps have been corrected for Asia/Seoul and 3442ba2b2efdSGlen Barber Asia/Pyongyang, based on sources for the Korean-language Wikipedia 3443ba2b2efdSGlen Barber entry for time in Korea. (Thanks to Sanghyuk Jung.) Also, no 3444ba2b2efdSGlen Barber longer guess that Pyongyang mimicked Seoul time after World War II, 3445ba2b2efdSGlen Barber as this is politically implausible. 3446ba2b2efdSGlen Barber 3447ba2b2efdSGlen Barber Some more zones have been turned into links, when they differed 3448ba2b2efdSGlen Barber from existing zones only for older timestamps. As usual, 3449f2fcff28SPhilip Paeps these changes affect UT offsets in pre-1970 timestamps only. 3450ba2b2efdSGlen Barber Their old contents have been moved to the 'backzone' file. 3451ba2b2efdSGlen Barber The affected zones are: Africa/Addis_Ababa, Africa/Asmara, 3452ba2b2efdSGlen Barber Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Kampala, 3453ba2b2efdSGlen Barber Africa/Mogadishu, Indian/Antananarivo, Indian/Comoro, and 3454ba2b2efdSGlen Barber Indian/Mayotte. 3455ba2b2efdSGlen Barber 3456ba2b2efdSGlen Barber Changes affecting commentary 3457ba2b2efdSGlen Barber 3458ba2b2efdSGlen Barber The commentary is less enthusiastic about Shanks as a source, 3459ba2b2efdSGlen Barber and is more careful to distinguish UT from UTC. 3460ba2b2efdSGlen Barber 3461ba2b2efdSGlen Barber 3462ba2b2efdSGlen BarberRelease 2014i - 2014-10-21 22:04:57 -0700 3463ba2b2efdSGlen Barber 3464ba2b2efdSGlen Barber Changes affecting future timestamps 3465ba2b2efdSGlen Barber 3466ba2b2efdSGlen Barber Pacific/Fiji will observe DST from 2014-11-02 02:00 to 2015-01-18 03:00. 3467ba2b2efdSGlen Barber (Thanks to Ken Rylander for the heads-up.) Guess that future 3468ba2b2efdSGlen Barber years will use a similar pattern. 3469ba2b2efdSGlen Barber 3470ba2b2efdSGlen Barber A new Zone Pacific/Bougainville, for the part of Papua New Guinea 3471ba2b2efdSGlen Barber that plans to switch from UT +10 to +11 on 2014-12-28 at 02:00. 3472ba2b2efdSGlen Barber (Thanks to Kiley Walbom for the heads-up.) 3473ba2b2efdSGlen Barber 3474ba2b2efdSGlen Barber Changes affecting time zone abbreviations 3475ba2b2efdSGlen Barber 3476ba2b2efdSGlen Barber Since Belarus is not changing its clocks even though Moscow is, 3477ba2b2efdSGlen Barber the time zone abbreviation in Europe/Minsk is changing from FET 3478259e2ad7SPhilip Paeps to its more traditional value MSK on 2014-10-26 at 01:00. 3479ba2b2efdSGlen Barber (Thanks to Alexander Bokovoy for the heads-up about Belarus.) 3480ba2b2efdSGlen Barber 3481ba2b2efdSGlen Barber The new abbreviation IDT stands for the pre-1976 use of UT +08 in 3482ba2b2efdSGlen Barber Indochina, to distinguish it better from ICT (+07). 3483ba2b2efdSGlen Barber 3484ba2b2efdSGlen Barber Changes affecting past timestamps 3485ba2b2efdSGlen Barber 3486ba2b2efdSGlen Barber Many timestamps have been corrected for Asia/Ho_Chi_Minh before 1976 3487ba2b2efdSGlen Barber (thanks to Trần Ngọc Quân for an indirect pointer to Trần Tiến Bình's 3488ba2b2efdSGlen Barber authoritative book). Asia/Ho_Chi_Minh has been added to 3489ba2b2efdSGlen Barber zone1970.tab, to give tzselect users in Vietnam two choices, 3490ba2b2efdSGlen Barber since north and south Vietnam disagreed after our 1970 cutoff. 3491ba2b2efdSGlen Barber 3492ba2b2efdSGlen Barber Asia/Phnom_Penh and Asia/Vientiane have been turned into links, as 3493ba2b2efdSGlen Barber they differed from existing zones only for older timestamps. As 3494ba2b2efdSGlen Barber usual, these changes affect pre-1970 timestamps only. Their old 3495ba2b2efdSGlen Barber contents have been moved to the 'backzone' file. 3496ba2b2efdSGlen Barber 3497ba2b2efdSGlen Barber Changes affecting code 3498ba2b2efdSGlen Barber 3499ba2b2efdSGlen Barber The time-related library functions now set errno on failure, and 3500ba2b2efdSGlen Barber some crashes in the new tzalloc-related library functions have 3501ba2b2efdSGlen Barber been fixed. (Thanks to Christos Zoulas for reporting most of 3502ba2b2efdSGlen Barber these problems and for suggesting fixes.) 3503ba2b2efdSGlen Barber 3504ba2b2efdSGlen Barber If USG_COMPAT is defined and the requested timestamp is standard time, 3505ba2b2efdSGlen Barber the tz library's localtime and mktime functions now set the extern 3506ba2b2efdSGlen Barber variable timezone to a value appropriate for that timestamp; and 3507ba2b2efdSGlen Barber similarly for ALTZONE, daylight saving time, and the altzone variable. 3508ba2b2efdSGlen Barber This change is a companion to the tzname change in 2014h, and is 3509ba2b2efdSGlen Barber designed to make timezone and altzone more compatible with tzname. 3510ba2b2efdSGlen Barber 3511ba2b2efdSGlen Barber The tz library's functions now set errno to EOVERFLOW if they fail 3512ba2b2efdSGlen Barber because the result cannot be represented. ctime and ctime_r now 3513ba2b2efdSGlen Barber return NULL and set errno when a timestamp is out of range, rather 3514ba2b2efdSGlen Barber than having undefined behavior. 3515ba2b2efdSGlen Barber 3516ba2b2efdSGlen Barber Some bugs associated with the new 2014g functions have been fixed. 3517ba2b2efdSGlen Barber This includes a bug that largely incapacitated the new functions 3518ba2b2efdSGlen Barber time2posix_z and posix2time_z. (Thanks to Christos Zoulas.) 3519ba2b2efdSGlen Barber It also includes some uses of uninitialized variables after tzalloc. 3520ba2b2efdSGlen Barber The new code uses the standard type 'ssize_t', which the Makefile 3521ba2b2efdSGlen Barber now gives porting advice about. 3522ba2b2efdSGlen Barber 3523ba2b2efdSGlen Barber Changes affecting commentary 3524ba2b2efdSGlen Barber 3525ba2b2efdSGlen Barber Updated URLs for NRC Canada (thanks to Matt Johnson and Brian Inglis). 3526ba2b2efdSGlen Barber 3527ba2b2efdSGlen Barber 3528ba2b2efdSGlen BarberRelease 2014h - 2014-09-25 18:59:03 -0700 3529ba2b2efdSGlen Barber 3530ba2b2efdSGlen Barber Changes affecting past timestamps 3531ba2b2efdSGlen Barber 3532ba2b2efdSGlen Barber America/Jamaica's 1974 spring-forward transition was Jan. 6, not Apr. 28. 3533ba2b2efdSGlen Barber 3534ba2b2efdSGlen Barber Shanks says Asia/Novokuznetsk switched from LMT (not "NMT") on 1924-05-01, 3535ba2b2efdSGlen Barber not 1920-01-06. The old entry was based on a misinterpretation of Shanks. 3536ba2b2efdSGlen Barber 3537ba2b2efdSGlen Barber Some more zones have been turned into links, when they differed 3538ba2b2efdSGlen Barber from existing zones only for older timestamps. As usual, 3539f2fcff28SPhilip Paeps these changes affect UT offsets in pre-1970 timestamps only. 3540ba2b2efdSGlen Barber Their old contents have been moved to the 'backzone' file. 3541ba2b2efdSGlen Barber The affected zones are: Africa/Blantyre, Africa/Bujumbura, 3542ba2b2efdSGlen Barber Africa/Gaborone, Africa/Harare, Africa/Kigali, Africa/Lubumbashi, 3543ba2b2efdSGlen Barber Africa/Lusaka, Africa/Maseru, and Africa/Mbabane. 3544ba2b2efdSGlen Barber 3545ba2b2efdSGlen Barber Changes affecting code 3546ba2b2efdSGlen Barber 3547ba2b2efdSGlen Barber zdump -V and -v now output gmtoff= values on all platforms, 3548ba2b2efdSGlen Barber not merely on platforms defining TM_GMTOFF. 3549ba2b2efdSGlen Barber 3550ba2b2efdSGlen Barber The tz library's localtime and mktime functions now set tzname to a value 3551ba2b2efdSGlen Barber appropriate for the requested timestamp, and zdump now uses this 3552ba2b2efdSGlen Barber on platforms not defining TM_ZONE, fixing a 2014g regression. 3553ba2b2efdSGlen Barber (Thanks to Tim Parenti for reporting the problem.) 3554ba2b2efdSGlen Barber 3555ba2b2efdSGlen Barber The tz library no longer sets tzname if localtime or mktime fails. 3556ba2b2efdSGlen Barber 3557ba2b2efdSGlen Barber zdump -c no longer mishandles transitions near year boundaries. 3558ba2b2efdSGlen Barber (Thanks to Tim Parenti for reporting the problem.) 3559ba2b2efdSGlen Barber 3560ba2b2efdSGlen Barber An access to uninitialized data has been fixed. 3561ba2b2efdSGlen Barber (Thanks to Jörg Richter for reporting the problem.) 3562ba2b2efdSGlen Barber 3563ba2b2efdSGlen Barber When THREAD_SAFE is defined, the code ports to the C11 memory model. 3564ba2b2efdSGlen Barber A memory leak has been fixed if ALL_STATE and THREAD_SAFE are defined 3565ba2b2efdSGlen Barber and two threads race to initialize data used by gmtime-like functions. 3566ba2b2efdSGlen Barber (Thanks to Andy Heninger for reporting the problems.) 3567ba2b2efdSGlen Barber 3568ba2b2efdSGlen Barber Changes affecting build procedure 3569ba2b2efdSGlen Barber 3570259e2ad7SPhilip Paeps 'make check' now checks better for properly sorted data. 3571ba2b2efdSGlen Barber 3572ba2b2efdSGlen Barber Changes affecting documentation and commentary 3573ba2b2efdSGlen Barber 3574ba2b2efdSGlen Barber zdump's gmtoff=N output is now documented, and its isdst=D output 3575ba2b2efdSGlen Barber is now documented to possibly output D values other than 0 or 1. 3576ba2b2efdSGlen Barber 3577ba2b2efdSGlen Barber zdump -c's treatment of years is now documented to use the 3578ba2b2efdSGlen Barber Gregorian calendar and Universal Time without leap seconds, 3579ba2b2efdSGlen Barber and its behavior at cutoff boundaries is now documented better. 3580ba2b2efdSGlen Barber (Thanks to Arthur David Olson and Tim Parenti for reporting the problems.) 3581ba2b2efdSGlen Barber 3582ba2b2efdSGlen Barber Programs are now documented to use the proleptic Gregorian calendar. 3583ba2b2efdSGlen Barber (Thanks to Alan Barrett for the suggestion.) 3584ba2b2efdSGlen Barber 3585ba2b2efdSGlen Barber Fractional-second GMT offsets have been documented for civil time 3586ba2b2efdSGlen Barber in 19th-century Chennai, Jakarta, and New York. 3587ba2b2efdSGlen Barber 3588ba2b2efdSGlen Barber 3589ba2b2efdSGlen BarberRelease 2014g - 2014-08-28 12:31:23 -0700 3590ba2b2efdSGlen Barber 3591ba2b2efdSGlen Barber Changes affecting future timestamps 3592ba2b2efdSGlen Barber 3593ba2b2efdSGlen Barber Turks & Caicos is switching from US eastern time to UT -04 3594ba2b2efdSGlen Barber year-round, modeled as a switch on 2014-11-02 at 02:00. 3595ba2b2efdSGlen Barber [As noted in 2014j, this switch was later delayed.] 3596ba2b2efdSGlen Barber 3597ba2b2efdSGlen Barber Changes affecting past timestamps 3598ba2b2efdSGlen Barber 3599ba2b2efdSGlen Barber Time in Russia or the USSR before 1926 or so has been corrected by 3600ba2b2efdSGlen Barber a few seconds in the following zones: Asia/Irkutsk, 3601ba2b2efdSGlen Barber Asia/Krasnoyarsk, Asia/Omsk, Asia/Samarkand, Asia/Tbilisi, 3602ba2b2efdSGlen Barber Asia/Vladivostok, Asia/Yakutsk, Europe/Riga, Europe/Samara. For 3603ba2b2efdSGlen Barber Asia/Yekaterinburg the correction is a few minutes. (Thanks to 3604ba2b2efdSGlen Barber Vladimir Karpinsky.) 3605ba2b2efdSGlen Barber 3606ba2b2efdSGlen Barber The Portuguese decree of 1911-05-26 took effect on 1912-01-01. 3607ba2b2efdSGlen Barber This affects 1911 timestamps in Africa/Bissau, Africa/Luanda, 3608ba2b2efdSGlen Barber Atlantic/Azores, and Atlantic/Madeira. Also, Lisbon's pre-1912 3609ba2b2efdSGlen Barber GMT offset was -0:36:45 (rounded from -0:36:44.68), not -0:36:32. 3610ba2b2efdSGlen Barber (Thanks to Stephen Colebourne for pointing to the decree.) 3611ba2b2efdSGlen Barber 3612ba2b2efdSGlen Barber Asia/Dhaka ended DST on 2009-12-31 at 24:00, not 23:59. 3613ba2b2efdSGlen Barber 3614ba2b2efdSGlen Barber A new file 'backzone' contains data which may appeal to 3615ba2b2efdSGlen Barber connoisseurs of old timestamps, although it is out of scope for 3616ba2b2efdSGlen Barber the tz database, is often poorly sourced, and contains some data 3617ba2b2efdSGlen Barber that is known to be incorrect. The new file is not recommended 3618ba2b2efdSGlen Barber for ordinary use and its entries are not installed by default. 3619ba2b2efdSGlen Barber (Thanks to Lester Caine for the high-quality Jersey, Guernsey, and 3620ba2b2efdSGlen Barber Isle of Man entries.) 3621ba2b2efdSGlen Barber 3622ba2b2efdSGlen Barber Some more zones have been turned into links, when they differed 3623ba2b2efdSGlen Barber from existing zones only for older timestamps. As usual, 3624f2fcff28SPhilip Paeps these changes affect UT offsets in pre-1970 timestamps only. 3625ba2b2efdSGlen Barber Their old contents have been moved to the 'backzone' file. 3626ba2b2efdSGlen Barber The affected zones are: Africa/Bangui, Africa/Brazzaville, 3627ba2b2efdSGlen Barber Africa/Douala, Africa/Kinshasa, Africa/Libreville, Africa/Luanda, 3628ba2b2efdSGlen Barber Africa/Malabo, Africa/Niamey, and Africa/Porto-Novo. 3629ba2b2efdSGlen Barber 3630ba2b2efdSGlen Barber Changes affecting code 3631ba2b2efdSGlen Barber 3632ba2b2efdSGlen Barber Unless NETBSD_INSPIRED is defined to 0, the tz library now 3633ba2b2efdSGlen Barber supplies functions for creating and using objects that represent 3634ba2b2efdSGlen Barber timezones. The new functions are tzalloc, tzfree, localtime_rz, 3635ba2b2efdSGlen Barber mktime_z, and (if STD_INSPIRED is also defined) posix2time_z and 3636ba2b2efdSGlen Barber time2posix_z. They are intended for performance: for example, 3637ba2b2efdSGlen Barber localtime_rz (unlike localtime_r) is trivially thread-safe without 3638ba2b2efdSGlen Barber locking. (Thanks to Christos Zoulas for proposing NetBSD-inspired 3639ba2b2efdSGlen Barber functions, and to Alan Barrett and Jonathan Lennox for helping to 3640ba2b2efdSGlen Barber debug the change.) 3641ba2b2efdSGlen Barber 3642ba2b2efdSGlen Barber zdump now builds with the tz library unless USE_LTZ is defined to 0, 3643ba2b2efdSGlen Barber This lets zdump use tz features even if the system library lacks them. 3644ba2b2efdSGlen Barber To build zdump with the system library, use 'make CFLAGS=-DUSE_LTZ=0 3645ba2b2efdSGlen Barber TZDOBJS=zdump.o CHECK_TIME_T_ALTERNATIVES='. 3646ba2b2efdSGlen Barber 3647ba2b2efdSGlen Barber zdump now uses localtime_rz if available, as it's significantly faster, 3648ba2b2efdSGlen Barber and it can help zdump better diagnose invalid timezone names. 3649ba2b2efdSGlen Barber Define HAVE_LOCALTIME_RZ to 0 to suppress this. HAVE_LOCALTIME_RZ 3650ba2b2efdSGlen Barber defaults to 1 if NETBSD_INSPIRED && USE_LTZ. When localtime_rz is 3651ba2b2efdSGlen Barber not available, zdump now uses localtime_r and tzset if available, 3652ba2b2efdSGlen Barber as this is a bit cleaner and faster than plain localtime. Compile 3653ba2b2efdSGlen Barber with -DHAVE_LOCALTIME_R=0 and/or -DHAVE_TZSET=0 if your system 3654ba2b2efdSGlen Barber lacks these two functions. 3655ba2b2efdSGlen Barber 3656ba2b2efdSGlen Barber If THREAD_SAFE is defined to 1, the tz library is now thread-safe. 3657ba2b2efdSGlen Barber Although not needed for tz's own applications, which are single-threaded, 3658ba2b2efdSGlen Barber this supports POSIX better if the tz library is used in multithreaded apps. 3659ba2b2efdSGlen Barber 3660ba2b2efdSGlen Barber Some crashes have been fixed when zdump or the tz library is given 3661ba2b2efdSGlen Barber invalid or outlandish input. 3662ba2b2efdSGlen Barber 3663ba2b2efdSGlen Barber The tz library no longer mishandles leap seconds on platforms with 3664ba2b2efdSGlen Barber unsigned time_t in timezones that lack ordinary transitions after 1970. 3665ba2b2efdSGlen Barber 3666ba2b2efdSGlen Barber The tz code now attempts to infer TM_GMTOFF and TM_ZONE if not 3667ba2b2efdSGlen Barber already defined, to make it easier to configure on common platforms. 3668ba2b2efdSGlen Barber Define NO_TM_GMTOFF and NO_TM_ZONE to suppress this. 3669ba2b2efdSGlen Barber 3670ba2b2efdSGlen Barber Unless the new macro UNINIT_TRAP is defined to 1, the tz code now 3671ba2b2efdSGlen Barber assumes that reading uninitialized memory yields garbage values 3672ba2b2efdSGlen Barber but does not cause other problems such as traps. 3673ba2b2efdSGlen Barber 3674ba2b2efdSGlen Barber If TM_GMTOFF is defined and UNINIT_TRAP is 0, mktime is now 3675ba2b2efdSGlen Barber more likely to guess right for ambiguous timestamps near 3676ba2b2efdSGlen Barber transitions where tm_isdst does not change. 3677ba2b2efdSGlen Barber 3678ba2b2efdSGlen Barber If HAVE_STRFTIME_L is defined to 1, the tz library now defines 3679ba2b2efdSGlen Barber strftime_l for compatibility with recent versions of POSIX. 3680ba2b2efdSGlen Barber Only the C locale is supported, though. HAVE_STRFTIME_L defaults 3681ba2b2efdSGlen Barber to 1 on recent POSIX versions, and to 0 otherwise. 3682ba2b2efdSGlen Barber 3683ba2b2efdSGlen Barber tzselect -c now uses a hybrid distance measure that works better 3684ba2b2efdSGlen Barber in Africa. (Thanks to Alan Barrett for noting the problem.) 3685ba2b2efdSGlen Barber 3686ba2b2efdSGlen Barber The C source code now ports to NetBSD when GCC_DEBUG_FLAGS is used, 3687ba2b2efdSGlen Barber or when time_tz is defined. 3688ba2b2efdSGlen Barber 3689ba2b2efdSGlen Barber When HAVE_UTMPX_H is set the 'date' command now builds on systems 3690ba2b2efdSGlen Barber whose <utmpx.h> file does not define WTMPX_FILE, and when setting 3691ba2b2efdSGlen Barber the date it updates the wtmpx file if _PATH_WTMPX is defined. 3692ba2b2efdSGlen Barber This affects GNU/Linux and similar systems. 3693ba2b2efdSGlen Barber 3694ba2b2efdSGlen Barber For easier maintenance later, some C code has been simplified, 3695ba2b2efdSGlen Barber some lint has been removed, and the code has been tweaked so that 3696ba2b2efdSGlen Barber plain 'make' is more likely to work. 3697ba2b2efdSGlen Barber 3698ba2b2efdSGlen Barber The C type 'bool' is now used for boolean values, instead of 'int'. 3699ba2b2efdSGlen Barber 3700ba2b2efdSGlen Barber The long-obsolete LOCALE_HOME code has been removed. 3701ba2b2efdSGlen Barber 3702ba2b2efdSGlen Barber The long-obsolete 'gtime' function has been removed. 3703ba2b2efdSGlen Barber 3704ba2b2efdSGlen Barber Changes affecting build procedure 3705ba2b2efdSGlen Barber 3706ba2b2efdSGlen Barber 'zdump' no longer links in ialloc.o, as it's not needed. 3707ba2b2efdSGlen Barber 3708ba2b2efdSGlen Barber 'make check_time_t_alternatives' no longer assumes GNU diff. 3709ba2b2efdSGlen Barber 3710ba2b2efdSGlen Barber Changes affecting distribution tarballs 3711ba2b2efdSGlen Barber 3712ba2b2efdSGlen Barber The files checktab.awk and zoneinfo2tdf.pl are now distributed in 3713ba2b2efdSGlen Barber the tzdata tarball instead of the tzcode tarball, since they help 3714ba2b2efdSGlen Barber maintain the data. The NEWS and Theory files are now also 3715ba2b2efdSGlen Barber distributed in the tzdata tarball, as they're relevant for data. 3716ba2b2efdSGlen Barber (Thanks to Alan Barrett for pointing this out.) Also, the 3717ba2b2efdSGlen Barber leapseconds.awk file is no longer distributed in the tzcode 3718ba2b2efdSGlen Barber tarball, since it belongs in the tzdata tarball (where 2014f 3719ba2b2efdSGlen Barber inadvertently also distributed it). 3720ba2b2efdSGlen Barber 3721ba2b2efdSGlen Barber Changes affecting documentation and commentary 3722ba2b2efdSGlen Barber 3723ba2b2efdSGlen Barber A new file CONTRIBUTING is distributed. (Thanks to Tim Parenti for 3724ba2b2efdSGlen Barber suggesting a CONTRIBUTING file, and to Tony Finch and Walter Harms 3725ba2b2efdSGlen Barber for debugging it.) 3726ba2b2efdSGlen Barber 3727ba2b2efdSGlen Barber The man pages have been updated to use function prototypes, 3728ba2b2efdSGlen Barber to document thread-safe variants like localtime_r, and to document 3729ba2b2efdSGlen Barber the NetBSD-inspired functions tzalloc, tzfree, localtime_rz, and 3730ba2b2efdSGlen Barber mktime_z. 3731ba2b2efdSGlen Barber 3732ba2b2efdSGlen Barber The fields in Link lines have been renamed to be more descriptive 3733ba2b2efdSGlen Barber and more like the parameters of 'ln'. LINK-FROM has become TARGET, 3734ba2b2efdSGlen Barber and LINK-TO has become LINK-NAME. 3735ba2b2efdSGlen Barber 3736ba2b2efdSGlen Barber tz-link.htm mentions the IETF's tzdist working group; Windows 3737ba2b2efdSGlen Barber Runtime etc. (thanks to Matt Johnson); and HP-UX's tztab. 3738ba2b2efdSGlen Barber 3739ba2b2efdSGlen Barber Some broken URLs have been fixed in the commentary. (Thanks to 3740ba2b2efdSGlen Barber Lester Caine.) 3741ba2b2efdSGlen Barber 3742ba2b2efdSGlen Barber Commentary about Philippines DST has been updated, and commentary 3743ba2b2efdSGlen Barber on pre-1970 time in India has been added. 3744ba2b2efdSGlen Barber 3745ba2b2efdSGlen Barber 3746ba2b2efdSGlen BarberRelease 2014f - 2014-08-05 17:42:36 -0700 3747ba2b2efdSGlen Barber 3748ba2b2efdSGlen Barber Changes affecting future timestamps 3749ba2b2efdSGlen Barber 3750ba2b2efdSGlen Barber Russia will subtract an hour from most of its time zones on 2014-10-26 3751ba2b2efdSGlen Barber at 02:00 local time. (Thanks to Alexander Krivenyshev.) 3752ba2b2efdSGlen Barber There are a few exceptions: Magadan Oblast (Asia/Magadan) and Zabaykalsky 3753ba2b2efdSGlen Barber Krai are subtracting two hours; conversely, Chukotka Autonomous Okrug 3754ba2b2efdSGlen Barber (Asia/Anadyr), Kamchatka Krai (Asia/Kamchatka), Kemerovo Oblast 3755ba2b2efdSGlen Barber (Asia/Novokuznetsk), and the Samara Oblast and the Udmurt Republic 3756ba2b2efdSGlen Barber (Europe/Samara) are not changing their clocks. The changed zones are 3757ba2b2efdSGlen Barber Europe/Kaliningrad, Europe/Moscow, Europe/Simferopol, Europe/Volgograd, 3758ba2b2efdSGlen Barber Asia/Yekaterinburg, Asia/Omsk, Asia/Novosibirsk, Asia/Krasnoyarsk, 3759ba2b2efdSGlen Barber Asia/Irkutsk, Asia/Yakutsk, Asia/Vladivostok, Asia/Khandyga, 3760ba2b2efdSGlen Barber Asia/Sakhalin, and Asia/Ust-Nera; Asia/Magadan will have two hours 3761ba2b2efdSGlen Barber subtracted; and Asia/Novokuznetsk's time zone abbreviation is affected, 3762ba2b2efdSGlen Barber but not its UTC offset. Two zones are added: Asia/Chita (split 3763ba2b2efdSGlen Barber from Asia/Yakutsk, and also with two hours subtracted) and 3764ba2b2efdSGlen Barber Asia/Srednekolymsk (split from Asia/Magadan, but with only one hour 3765ba2b2efdSGlen Barber subtracted). (Thanks to Tim Parenti for much of the above.) 3766ba2b2efdSGlen Barber 3767ba2b2efdSGlen Barber Changes affecting time zone abbreviations 3768ba2b2efdSGlen Barber 3769ba2b2efdSGlen Barber Australian eastern time zone abbreviations are now AEST/AEDT not EST, 3770ba2b2efdSGlen Barber and similarly for the other Australian zones. That is, for eastern 3771ba2b2efdSGlen Barber standard and daylight saving time the abbreviations are AEST and AEDT 3772ba2b2efdSGlen Barber instead of the former EST for both; similarly, ACST/ACDT, ACWST/ACWDT, 3773ba2b2efdSGlen Barber and AWST/AWDT are now used instead of the former CST, CWST, and WST. 3774f2fcff28SPhilip Paeps This change does not affect UT offsets, only time zone abbreviations. 3775ba2b2efdSGlen Barber (Thanks to Rich Tibbett and many others.) 3776ba2b2efdSGlen Barber 3777ba2b2efdSGlen Barber Asia/Novokuznetsk shifts from NOVT to KRAT (remaining on UT +07) 3778ba2b2efdSGlen Barber effective 2014-10-26 at 02:00 local time. 3779ba2b2efdSGlen Barber 3780ba2b2efdSGlen Barber The time zone abbreviation for Xinjiang Time (observed in Ürümqi) 3781ba2b2efdSGlen Barber has been changed from URUT to XJT. (Thanks to Luther Ma.) 3782ba2b2efdSGlen Barber 3783ba2b2efdSGlen Barber Prefer MSK/MSD for Moscow time in Russia, even in other cities. 3784ba2b2efdSGlen Barber Similarly, prefer EET/EEST for eastern European time in Russia. 3785ba2b2efdSGlen Barber 3786ba2b2efdSGlen Barber Change time zone abbreviations in (western) Samoa to use "ST" and 3787ba2b2efdSGlen Barber "DT" suffixes, as this is more likely to match common practice. 3788ba2b2efdSGlen Barber Prefix "W" to (western) Samoa time when its standard-time offset 3789ba2b2efdSGlen Barber disagrees with that of American Samoa. 3790ba2b2efdSGlen Barber 3791ba2b2efdSGlen Barber America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. 3792ba2b2efdSGlen Barber 3793ba2b2efdSGlen Barber Time zone abbreviations have been updated for Japan's two time 3794ba2b2efdSGlen Barber zones used 1896-1937. JWST now stands for Western Standard 3795ba2b2efdSGlen Barber Time, and JCST for Central Standard Time (formerly this was CJT). 3796ba2b2efdSGlen Barber These abbreviations are now used for time in Korea, Taiwan, 3797ba2b2efdSGlen Barber and Sakhalin while controlled by Japan. 3798ba2b2efdSGlen Barber 3799ba2b2efdSGlen Barber Changes affecting past timestamps 3800ba2b2efdSGlen Barber 3801ba2b2efdSGlen Barber China's five zones have been simplified to two, since the post-1970 3802ba2b2efdSGlen Barber differences in the other three seem to have been imaginary. The 3803ba2b2efdSGlen Barber zones Asia/Harbin, Asia/Chongqing, and Asia/Kashgar have been 3804ba2b2efdSGlen Barber removed; backwards-compatibility links still work, albeit with 3805ba2b2efdSGlen Barber different behaviors for timestamps before May 1980. Asia/Urumqi's 3806ba2b2efdSGlen Barber 1980 transition to UT +08 has been removed, so that it is now at 3807ba2b2efdSGlen Barber +06 and not +08. (Thanks to Luther Ma and to Alois Treindl; 3808ba2b2efdSGlen Barber Treindl sent helpful translations of two papers by Guo Qingsheng.) 3809ba2b2efdSGlen Barber 3810ba2b2efdSGlen Barber Some zones have been turned into links, when they differed from existing 3811f2fcff28SPhilip Paeps zones only for older UT offsets where data entries were likely invented. 3812f2fcff28SPhilip Paeps These changes affect UT offsets in pre-1970 timestamps only. This is 3813ba2b2efdSGlen Barber similar to the change in release 2013e, except this time for western 3814ba2b2efdSGlen Barber Africa. The affected zones are: Africa/Bamako, Africa/Banjul, 3815ba2b2efdSGlen Barber Africa/Conakry, Africa/Dakar, Africa/Freetown, Africa/Lome, 3816ba2b2efdSGlen Barber Africa/Nouakchott, Africa/Ouagadougou, Africa/Sao_Tome, and 3817ba2b2efdSGlen Barber Atlantic/St_Helena. This also affects the backwards-compatibility 3818ba2b2efdSGlen Barber link Africa/Timbuktu. (Thanks to Alan Barrett, Stephen Colebourne, 3819ba2b2efdSGlen Barber Tim Parenti, and David Patte for reporting problems in earlier 3820ba2b2efdSGlen Barber versions of this change.) 3821ba2b2efdSGlen Barber 3822ba2b2efdSGlen Barber Asia/Shanghai's pre-standard-time UT offset has been changed from 3823ba2b2efdSGlen Barber 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its 3824ba2b2efdSGlen Barber transition to standard time has been changed from 1928 to 1901. 3825ba2b2efdSGlen Barber 3826ba2b2efdSGlen Barber Asia/Taipei switched to JWST on 1896-01-01, then to JST on 1937-10-01, 3827ba2b2efdSGlen Barber then to CST on 1945-09-21 at 01:00, and did not observe DST in 1945. 3828ba2b2efdSGlen Barber In 1946 it observed DST from 05-15 through 09-30; in 1947 3829ba2b2efdSGlen Barber from 04-15 through 10-31; and in 1979 from 07-01 through 09-30. 3830ba2b2efdSGlen Barber (Thanks to Yu-Cheng Chuang.) 3831ba2b2efdSGlen Barber 3832ba2b2efdSGlen Barber Asia/Riyadh's transition to standard time is now 1947-03-14, not 1950. 3833ba2b2efdSGlen Barber 3834ba2b2efdSGlen Barber Europe/Helsinki's 1942 fall-back transition was 10-04 at 01:00, not 3835ba2b2efdSGlen Barber 10-03 at 00:00. (Thanks to Konstantin Hyppönen.) 3836ba2b2efdSGlen Barber 3837ba2b2efdSGlen Barber Pacific/Pago_Pago has been changed from UT -11:30 to -11 for the 3838ba2b2efdSGlen Barber period from 1911 to 1950. 3839ba2b2efdSGlen Barber 3840ba2b2efdSGlen Barber Pacific/Chatham has been changed to New Zealand standard time plus 3841ba2b2efdSGlen Barber 45 minutes for the period before 1957, reflecting a 1956 remark in 3842ba2b2efdSGlen Barber the New Zealand parliament. 3843ba2b2efdSGlen Barber 3844ba2b2efdSGlen Barber Europe/Budapest has several pre-1946 corrections: in 1918 the transition 3845ba2b2efdSGlen Barber out of DST was on 09-16, not 09-29; in 1919 it was on 11-24, not 09-15; in 3846ba2b2efdSGlen Barber 1945 it was on 11-01, not 11-03; in 1941 the transition to DST was 04-08 3847ba2b2efdSGlen Barber not 04-06 at 02:00; and there was no DST in 1920. 3848ba2b2efdSGlen Barber 3849ba2b2efdSGlen Barber Africa/Accra is now assumed to have observed DST from 1920 through 1935. 3850ba2b2efdSGlen Barber 3851ba2b2efdSGlen Barber Time in Russia before 1927 or so has been corrected by a few seconds in 3852ba2b2efdSGlen Barber the following zones: Europe/Moscow, Asia/Irkutsk, Asia/Tbilisi, 3853ba2b2efdSGlen Barber Asia/Tashkent, Asia/Vladivostok, Asia/Yekaterinburg, Europe/Helsinki, and 3854ba2b2efdSGlen Barber Europe/Riga. Also, Moscow's location has been changed to its Kilometer 0 3855ba2b2efdSGlen Barber point. (Thanks to Vladimir Karpinsky for the Moscow changes.) 3856ba2b2efdSGlen Barber 3857ba2b2efdSGlen Barber Changes affecting data format 3858ba2b2efdSGlen Barber 3859ba2b2efdSGlen Barber A new file 'zone1970.tab' supersedes 'zone.tab' in the installed data. 3860ba2b2efdSGlen Barber The new file's extended format allows multiple country codes per zone. 3861ba2b2efdSGlen Barber The older file is still installed but is deprecated; its format is 3862ba2b2efdSGlen Barber not changing and it will still be distributed for a while, but new 3863ba2b2efdSGlen Barber applications should use the new file. 3864ba2b2efdSGlen Barber 3865ba2b2efdSGlen Barber The new file format simplifies maintenance of obscure locations. 3866ba2b2efdSGlen Barber To test this, it adds coverage for the Crozet Islands and the 3867ba2b2efdSGlen Barber Scattered Islands. (Thanks to Tobias Conradi and Antoine Leca.) 3868ba2b2efdSGlen Barber 3869ba2b2efdSGlen Barber The file 'iso3166.tab' is planned to switch from ASCII to UTF-8. 3870ba2b2efdSGlen Barber It is still ASCII now, but commentary about the switch has been added. 3871ba2b2efdSGlen Barber The new file 'zone1970.tab' already uses UTF-8. 3872ba2b2efdSGlen Barber 3873ba2b2efdSGlen Barber Changes affecting code 3874ba2b2efdSGlen Barber 3875ba2b2efdSGlen Barber 'localtime', 'mktime', etc. now use much less stack space if ALL_STATE 3876ba2b2efdSGlen Barber is defined. (Thanks to Elliott Hughes for reporting the problem.) 3877ba2b2efdSGlen Barber 3878ba2b2efdSGlen Barber 'zic' no longer mishandles input when ignoring case in locales that 3879ba2b2efdSGlen Barber are not compatible with English, e.g., unibyte Turkish locales when 3880ba2b2efdSGlen Barber compiled with HAVE_GETTEXT. 3881ba2b2efdSGlen Barber 3882ba2b2efdSGlen Barber Error diagnostics of 'zic' and 'yearistype' have been reworded so that 3883ba2b2efdSGlen Barber they no longer use ASCII '-' as if it were a dash. 3884ba2b2efdSGlen Barber 3885ba2b2efdSGlen Barber 'zic' now rejects output file names that contain '.' or '..' components. 3886ba2b2efdSGlen Barber (Thanks to Tim Parenti for reporting the problem.) 3887ba2b2efdSGlen Barber 3888ba2b2efdSGlen Barber 'zic -v' now warns about output file names that do not follow 3889ba2b2efdSGlen Barber POSIX rules, or that contain a digit or '.'. (Thanks to Arthur 3890ba2b2efdSGlen Barber David Olson for starting the ball rolling on this.) 3891ba2b2efdSGlen Barber 3892ba2b2efdSGlen Barber Some lint has been removed when using GCC_DEBUG_FLAGS with GCC 4.9.0. 3893ba2b2efdSGlen Barber 3894ba2b2efdSGlen Barber Changes affecting build procedure 3895ba2b2efdSGlen Barber 3896ba2b2efdSGlen Barber 'zic' no longer links in localtime.o and asctime.o, as they're not needed. 3897ba2b2efdSGlen Barber (Thanks to John Cochran.) 3898ba2b2efdSGlen Barber 3899ba2b2efdSGlen Barber Changes affecting documentation and commentary 3900ba2b2efdSGlen Barber 3901ba2b2efdSGlen Barber The 'Theory' file documents legacy names, the longstanding 3902ba2b2efdSGlen Barber exceptions to the POSIX-inspired file name rules. 3903ba2b2efdSGlen Barber 3904ba2b2efdSGlen Barber The 'zic' documentation clarifies the role of time types when 3905ba2b2efdSGlen Barber interpreting dates. (Thanks to Arthur David Olson.) 3906ba2b2efdSGlen Barber 3907ba2b2efdSGlen Barber Documentation and commentary now prefer UTF-8 to US-ASCII, 3908ba2b2efdSGlen Barber allowing the use of proper accents in foreign words and names. 3909ba2b2efdSGlen Barber Code and data have not changed because of this. (Thanks to 3910ba2b2efdSGlen Barber Garrett Wollman, Ian Abbott, and Guy Harris for helping to debug 3911ba2b2efdSGlen Barber this.) 3912ba2b2efdSGlen Barber 3913ba2b2efdSGlen Barber Non-HTML documentation and commentary now use plain-text URLs instead of 3914ba2b2efdSGlen Barber HTML insertions, and are more consistent about bracketing URLs when they 3915ba2b2efdSGlen Barber are not already surrounded by white space. (Thanks to suggestions by 3916ba2b2efdSGlen Barber Steffen Nurpmeso.) 3917ba2b2efdSGlen Barber 3918ba2b2efdSGlen Barber There is new commentary about Xujiahui Observatory, the five time-zone 3919ba2b2efdSGlen Barber project in China from 1918 to 1949, timekeeping in Japanese-occupied 3920ba2b2efdSGlen Barber Shanghai, and Tibet Time in the 1950s. The sharp-eyed can spot the 3921ba2b2efdSGlen Barber warlord Jin Shuren in the data. 3922ba2b2efdSGlen Barber 3923ba2b2efdSGlen Barber Commentary about the coverage of each Russian zone has been standardized. 39242865ab3fSPhilip Paeps (Thanks to Tim Parenti.) 3925ba2b2efdSGlen Barber 3926ba2b2efdSGlen Barber There is new commentary about contemporary timekeeping in Ethiopia. 3927ba2b2efdSGlen Barber 3928ba2b2efdSGlen Barber Obsolete comments about a 2007 proposal for DST in Kuwait has been removed. 3929ba2b2efdSGlen Barber 3930ba2b2efdSGlen Barber There is new commentary about time in Poland in 1919. 3931ba2b2efdSGlen Barber 3932ba2b2efdSGlen Barber Proper credit has been given to DST inventor George Vernon Hudson. 3933ba2b2efdSGlen Barber 3934ba2b2efdSGlen Barber Commentary about time in Metlakatla, AK and Resolute, NU has been 3935ba2b2efdSGlen Barber improved, with a new source for the former. 3936ba2b2efdSGlen Barber 3937ba2b2efdSGlen Barber In zone.tab, Pacific/Easter no longer mentions Salas y Gómez, as it 3938ba2b2efdSGlen Barber is uninhabited. 3939ba2b2efdSGlen Barber 3940ba2b2efdSGlen Barber Commentary about permanent Antarctic bases has been updated. 3941ba2b2efdSGlen Barber 3942ba2b2efdSGlen Barber Several typos have been corrected. (Thanks to Tim Parenti for 3943ba2b2efdSGlen Barber contributing some of these fixes.) 3944ba2b2efdSGlen Barber 3945ba2b2efdSGlen Barber tz-link.htm now mentions the JavaScript libraries Moment Timezone, 3946ba2b2efdSGlen Barber TimezoneJS.Date, Walltime-js, and Timezone. (Thanks to a heads-up 3947ba2b2efdSGlen Barber from Matt Johnson.) Also, it mentions the Go 'latlong' package. 3948ba2b2efdSGlen Barber (Thanks to a heads-up from Dirkjan Ochtman.) 3949ba2b2efdSGlen Barber 3950ba2b2efdSGlen Barber The files usno1988, usno1989, usno1989a, usno1995, usno1997, and usno1998 3951ba2b2efdSGlen Barber have been removed. These obsolescent US Naval Observatory entries were no 3952ba2b2efdSGlen Barber longer helpful for maintenance. (Thanks to Tim Parenti for the suggestion.) 3953ba2b2efdSGlen Barber 3954ba2b2efdSGlen Barber 3955ba2b2efdSGlen BarberRelease 2014e - 2014-06-12 21:53:52 -0700 3956ba2b2efdSGlen Barber 3957ba2b2efdSGlen Barber Changes affecting near-future timestamps 3958ba2b2efdSGlen Barber 3959ba2b2efdSGlen Barber Egypt's 2014 Ramadan-based transitions are June 26 and July 31 at 24:00. 3960ba2b2efdSGlen Barber (Thanks to Imed Chihi.) Guess that from 2015 on Egypt will temporarily 3961ba2b2efdSGlen Barber switch to standard time at 24:00 the last Thursday before Ramadan, and 3962ba2b2efdSGlen Barber back to DST at 00:00 the first Friday after Ramadan. 3963ba2b2efdSGlen Barber 3964ba2b2efdSGlen Barber Similarly, Morocco's are June 28 at 03:00 and August 2 at 02:00. (Thanks 3965ba2b2efdSGlen Barber to Milamber Space Network.) Guess that from 2015 on Morocco will 3966ba2b2efdSGlen Barber temporarily switch to standard time at 03:00 the last Saturday before 3967ba2b2efdSGlen Barber Ramadan, and back to DST at 02:00 the first Saturday after Ramadan. 3968ba2b2efdSGlen Barber 3969ba2b2efdSGlen Barber Changes affecting past timestamps 3970ba2b2efdSGlen Barber 3971ba2b2efdSGlen Barber The abbreviation "MSM" (Moscow Midsummer Time) is now used instead of 3972ba2b2efdSGlen Barber "MSD" for Moscow's double daylight time in summer 1921. Also, a typo 3973ba2b2efdSGlen Barber "VLASST" has been repaired to be "VLAST" for Vladivostok summer time 3974ba2b2efdSGlen Barber in 1991. (Thanks to Hank W. for reporting the problems.) 3975ba2b2efdSGlen Barber 3976ba2b2efdSGlen Barber Changes affecting commentary 3977ba2b2efdSGlen Barber 3978ba2b2efdSGlen Barber tz-link.htm now cites RFC 7265 for jCal, mentions PTP and the 3979ba2b2efdSGlen Barber draft CalDAV extension, updates URLs for TSP, TZInfo, IATA, and 3980ba2b2efdSGlen Barber removes stale pointers to World Time Explorer and WORLDTIME. 3981ba2b2efdSGlen Barber 3982ba2b2efdSGlen Barber 3983ba2b2efdSGlen BarberRelease 2014d - 2014-05-27 21:34:40 -0700 3984ba2b2efdSGlen Barber 3985ba2b2efdSGlen Barber Changes affecting code 3986ba2b2efdSGlen Barber 3987ba2b2efdSGlen Barber zic no longer generates files containing timestamps before the Big Bang. 398889abb9f8SPhilip Paeps This works around GNOME glib bug 878 398989abb9f8SPhilip Paeps <https://gitlab.gnome.org/GNOME/glib/issues/878> 3990ba2b2efdSGlen Barber (Thanks to Leonardo Chiquitto for reporting the bug, and to 3991ba2b2efdSGlen Barber Arthur David Olson and James Cloos for suggesting improvements to the fix.) 3992ba2b2efdSGlen Barber 3993ba2b2efdSGlen Barber Changes affecting documentation 3994ba2b2efdSGlen Barber 3995ba2b2efdSGlen Barber tz-link.htm now mentions GNOME. 3996ba2b2efdSGlen Barber 3997ba2b2efdSGlen Barber 3998ba2b2efdSGlen BarberRelease 2014c - 2014-05-13 07:44:13 -0700 3999ba2b2efdSGlen Barber 4000ba2b2efdSGlen Barber Changes affecting near-future timestamps 4001ba2b2efdSGlen Barber 4002ba2b2efdSGlen Barber Egypt observes DST starting 2014-05-15 at 24:00. 4003ba2b2efdSGlen Barber (Thanks to Ahmad El-Dardiry and Gunther Vermier.) 4004ba2b2efdSGlen Barber Details have not been announced, except that DST will not be observed 4005ba2b2efdSGlen Barber during Ramadan. Guess that DST will stop during the same Ramadan dates as 4006ba2b2efdSGlen Barber Morocco, and that Egypt's future spring and fall transitions will be the 4007ba2b2efdSGlen Barber same as 2010 when it last observed DST, namely April's last Friday at 4008ba2b2efdSGlen Barber 00:00 to September's last Thursday at 23:00 standard time. Also, guess 4009ba2b2efdSGlen Barber that Ramadan transitions will be at 00:00 standard time. 4010ba2b2efdSGlen Barber 4011ba2b2efdSGlen Barber Changes affecting code 4012ba2b2efdSGlen Barber 4013ba2b2efdSGlen Barber zic now generates transitions for minimum time values, eliminating guesswork 4014ba2b2efdSGlen Barber when handling low-valued timestamps. (Thanks to Arthur David Olson.) 4015ba2b2efdSGlen Barber 4016ba2b2efdSGlen Barber Port to Cygwin sans glibc. (Thanks to Arthur David Olson.) 4017ba2b2efdSGlen Barber 4018ba2b2efdSGlen Barber Changes affecting commentary and documentation 4019ba2b2efdSGlen Barber 4020ba2b2efdSGlen Barber Remove now-confusing comment about Jordan. (Thanks to Oleksii Nochovnyi.) 4021ba2b2efdSGlen Barber 4022ba2b2efdSGlen Barber 4023ba2b2efdSGlen BarberRelease 2014b - 2014-03-24 21:28:50 -0700 4024ba2b2efdSGlen Barber 4025ba2b2efdSGlen Barber Changes affecting near-future timestamps 4026ba2b2efdSGlen Barber 4027ba2b2efdSGlen Barber Crimea switches to Moscow time on 2014-03-30 at 02:00 local time. 4028ba2b2efdSGlen Barber (Thanks to Alexander Krivenyshev.) Move its zone.tab entry from UA to RU. 4029ba2b2efdSGlen Barber 4030ba2b2efdSGlen Barber New entry for Troll station, Antarctica. (Thanks to Paul-Inge Flakstad and 4031ba2b2efdSGlen Barber Bengt-Inge Larsson.) This is currently an approximation; a better version 4032ba2b2efdSGlen Barber will require the zic and localtime fixes mentioned below, and the plan is 4033ba2b2efdSGlen Barber to wait for a while until at least the zic fixes propagate. 4034ba2b2efdSGlen Barber 4035ba2b2efdSGlen Barber Changes affecting code 4036ba2b2efdSGlen Barber 4037ba2b2efdSGlen Barber 'zic' and 'localtime' no longer reject locations needing four transitions 4038ba2b2efdSGlen Barber per year for the foreseeable future. (Thanks to Andrew Main (Zefram).) 4039ba2b2efdSGlen Barber Also, 'zic' avoids some unlikely failures due to integer overflow. 4040ba2b2efdSGlen Barber 4041ba2b2efdSGlen Barber Changes affecting build procedure 4042ba2b2efdSGlen Barber 4043ba2b2efdSGlen Barber 'make check' now detects Rule lines defined but never used. 4044ba2b2efdSGlen Barber The NZAQ rules, an instance of this problem, have been removed. 4045ba2b2efdSGlen Barber 4046ba2b2efdSGlen Barber Changes affecting commentary and documentation 4047ba2b2efdSGlen Barber 4048ba2b2efdSGlen Barber Fix Tuesday/Thursday typo in description of time in Israel. 4049ba2b2efdSGlen Barber (Thanks to Bert Katz via Pavel Kharitonov and Mike Frysinger.) 4050ba2b2efdSGlen Barber 4051ba2b2efdSGlen Barber Microsoft Windows 8.1 doesn't support tz database names. (Thanks 4052ba2b2efdSGlen Barber to Donald MacQueen.) Instead, the Microsoft Windows Store app 4053ba2b2efdSGlen Barber library supports them. 4054ba2b2efdSGlen Barber 4055ba2b2efdSGlen Barber Add comments about Johnston Island time in the 1960s. 4056ba2b2efdSGlen Barber (Thanks to Lyle McElhaney.) 4057ba2b2efdSGlen Barber 4058ba2b2efdSGlen Barber Morocco's 2014 DST start will be as predicted. 4059ba2b2efdSGlen Barber (Thanks to Sebastien Willemijns.) 4060ba2b2efdSGlen Barber 4061ba2b2efdSGlen Barber 4062ba2b2efdSGlen BarberRelease 2014a - 2014-03-07 23:30:29 -0800 4063ba2b2efdSGlen Barber 4064ba2b2efdSGlen Barber Changes affecting near-future timestamps 4065ba2b2efdSGlen Barber 4066ba2b2efdSGlen Barber Turkey begins DST on 2014-03-31, not 03-30. (Thanks to Faruk Pasin for 4067ba2b2efdSGlen Barber the heads-up, and to Tim Parenti for simplifying the update.) 4068ba2b2efdSGlen Barber 4069ba2b2efdSGlen Barber Changes affecting past timestamps 4070ba2b2efdSGlen Barber 4071259e2ad7SPhilip Paeps Fiji ended DST on 2014-01-19 at 02:00, not the previously scheduled 03:00. 4072ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) 4073ba2b2efdSGlen Barber 4074ba2b2efdSGlen Barber Ukraine switched from Moscow to Eastern European time on 1990-07-01 4075ba2b2efdSGlen Barber (not 1992-01-01), and observed DST during the entire next winter. 4076ba2b2efdSGlen Barber (Thanks to Vladimir in Moscow via Alois Treindl.) 4077ba2b2efdSGlen Barber 4078ba2b2efdSGlen Barber In 1988 Israel observed DST from 04-10 to 09-04, not 04-09 to 09-03. 4079ba2b2efdSGlen Barber (Thanks to Avigdor Finkelstein.) 4080ba2b2efdSGlen Barber 4081ba2b2efdSGlen Barber Changes affecting code 4082ba2b2efdSGlen Barber 4083ba2b2efdSGlen Barber A uninitialized-storage bug in 'localtime' has been fixed. 4084ba2b2efdSGlen Barber (Thanks to Logan Chien.) 4085ba2b2efdSGlen Barber 4086ba2b2efdSGlen Barber Changes affecting the build procedure 4087ba2b2efdSGlen Barber 4088ba2b2efdSGlen Barber The settings for 'make check_web' now default to Ubuntu 13.10. 4089ba2b2efdSGlen Barber 4090ba2b2efdSGlen Barber Changes affecting commentary and documentation 4091ba2b2efdSGlen Barber 4092ba2b2efdSGlen Barber The boundary of the US Pacific time zone is given more accurately. 4093ba2b2efdSGlen Barber (Thanks to Alan Mintz.) 4094ba2b2efdSGlen Barber 4095ba2b2efdSGlen Barber Chile's 2014 DST will be as predicted. (Thanks to José Miguel Garrido.) 4096ba2b2efdSGlen Barber 4097ba2b2efdSGlen Barber Paraguay's 2014 DST will be as predicted. (Thanks to Carlos Raúl Perasso.) 4098ba2b2efdSGlen Barber 4099ba2b2efdSGlen Barber Better descriptions of countries with same time zone history as 4100ba2b2efdSGlen Barber Trinidad and Tobago since 1970. (Thanks to Alan Barrett for suggestion.) 4101ba2b2efdSGlen Barber 4102ba2b2efdSGlen Barber Several changes affect tz-link.htm, the main web page. 4103ba2b2efdSGlen Barber 4104ba2b2efdSGlen Barber Mention Time.is (thanks to Even Scharning) and WX-now (thanks to 4105ba2b2efdSGlen Barber David Braverman). 4106ba2b2efdSGlen Barber 4107ba2b2efdSGlen Barber Mention xCal (Internet RFC 6321) and jCal. 4108ba2b2efdSGlen Barber 4109ba2b2efdSGlen Barber Microsoft has some support for tz database names. 4110ba2b2efdSGlen Barber 4111ba2b2efdSGlen Barber CLDR data formats include both XML and JSON. 4112ba2b2efdSGlen Barber 4113ba2b2efdSGlen Barber Mention Maggiolo's map of solar vs standard time. 4114ba2b2efdSGlen Barber (Thanks to Arthur David Olson.) 4115ba2b2efdSGlen Barber 4116ba2b2efdSGlen Barber Mention TZ4Net. (Thanks to Matt Johnson.) 4117ba2b2efdSGlen Barber 4118ba2b2efdSGlen Barber Mention the timezone-olson Haskell package. 4119ba2b2efdSGlen Barber 4120ba2b2efdSGlen Barber Mention zeitverschiebung.net. (Thanks to Martin Jäger.) 4121ba2b2efdSGlen Barber 4122ba2b2efdSGlen Barber Remove moribund links to daylight-savings-time.info and to 4123ba2b2efdSGlen Barber Simple Timer + Clocks. 4124ba2b2efdSGlen Barber 4125ba2b2efdSGlen Barber Update two links. (Thanks to Oscar van Vlijmen.) 4126ba2b2efdSGlen Barber 4127ba2b2efdSGlen Barber Fix some formatting glitches, e.g., remove random newlines from 4128ba2b2efdSGlen Barber abbr elements' title attributes. 4129ba2b2efdSGlen Barber 4130ba2b2efdSGlen Barber 4131ba2b2efdSGlen BarberRelease 2013i - 2013-12-17 07:25:23 -0800 4132ba2b2efdSGlen Barber 4133ba2b2efdSGlen Barber Changes affecting near-future timestamps: 4134ba2b2efdSGlen Barber 4135ba2b2efdSGlen Barber Jordan switches back to standard time at 00:00 on December 20, 2013. 4136ba2b2efdSGlen Barber The 2006-2011 transition schedule is planned to resume in 2014. 4137ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) 4138ba2b2efdSGlen Barber 4139ba2b2efdSGlen Barber Changes affecting past timestamps: 4140ba2b2efdSGlen Barber 4141ba2b2efdSGlen Barber In 2004, Cuba began DST on March 28, not April 4. 4142ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) 4143ba2b2efdSGlen Barber 4144ba2b2efdSGlen Barber Changes affecting code 4145ba2b2efdSGlen Barber 4146ba2b2efdSGlen Barber The compile-time flag NOSOLAR has been removed, as nowadays the 4147ba2b2efdSGlen Barber benefit of slightly shrinking runtime table size is outweighed by the 4148ba2b2efdSGlen Barber cost of disallowing potential future updates that exceed old limits. 4149ba2b2efdSGlen Barber 4150ba2b2efdSGlen Barber Changes affecting documentation and commentary 4151ba2b2efdSGlen Barber 4152ba2b2efdSGlen Barber The files solar87, solar88, and solar89 are no longer distributed. 4153ba2b2efdSGlen Barber They were a negative experiment - that is, a demonstration that 4154ba2b2efdSGlen Barber tz data can represent solar time only with some difficulty and error. 4155ba2b2efdSGlen Barber Their presence in the distribution caused confusion, as Riyadh 4156ba2b2efdSGlen Barber civil time was generally not solar time in those years. 4157ba2b2efdSGlen Barber 4158ba2b2efdSGlen Barber tz-link.htm now mentions Noda Time. (Thanks to Matt Johnson.) 4159ba2b2efdSGlen Barber 4160ba2b2efdSGlen Barber 4161ba2b2efdSGlen BarberRelease 2013h - 2013-10-25 15:32:32 -0700 4162ba2b2efdSGlen Barber 4163ba2b2efdSGlen Barber Changes affecting current and future timestamps: 4164ba2b2efdSGlen Barber 4165ba2b2efdSGlen Barber Libya has switched its UT offset back to +02 without DST, instead 4166ba2b2efdSGlen Barber of +01 with DST. (Thanks to Even Scharning.) 4167ba2b2efdSGlen Barber 4168ba2b2efdSGlen Barber Western Sahara (Africa/El_Aaiun) uses Morocco's DST rules. 4169ba2b2efdSGlen Barber (Thanks to Gwillim Law.) 4170ba2b2efdSGlen Barber 4171ba2b2efdSGlen Barber Changes affecting future timestamps: 4172ba2b2efdSGlen Barber 4173ba2b2efdSGlen Barber Acre and (we guess) western Amazonas will switch from UT -04 to -05 4174ba2b2efdSGlen Barber on 2013-11-10. This affects America/Rio_Branco and America/Eirunepe. 4175ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) 4176ba2b2efdSGlen Barber 4177ba2b2efdSGlen Barber Add entries for DST transitions in Morocco in the year 2038. 4178ba2b2efdSGlen Barber This avoids some year-2038 glitches introduced in 2013g. 4179ba2b2efdSGlen Barber (Thanks to Yoshito Umaoka for reporting the problem.) 4180ba2b2efdSGlen Barber 4181ba2b2efdSGlen Barber Changes affecting API 4182ba2b2efdSGlen Barber 4183ba2b2efdSGlen Barber The 'tzselect' command no longer requires the 'select' command, 4184ba2b2efdSGlen Barber and should now work with /bin/sh on more platforms. It also works 4185ba2b2efdSGlen Barber around a bug in BusyBox awk before version 1.21.0. (Thanks to 4186ba2b2efdSGlen Barber Patrick 'P. J.' McDermott and Alan Barrett.) 4187ba2b2efdSGlen Barber 4188ba2b2efdSGlen Barber Changes affecting code 4189ba2b2efdSGlen Barber 4190ba2b2efdSGlen Barber Fix localtime overflow bugs with 32-bit unsigned time_t. 4191ba2b2efdSGlen Barber 4192ba2b2efdSGlen Barber zdump no longer assumes sscanf returns maximal values on overflow. 4193ba2b2efdSGlen Barber 4194ba2b2efdSGlen Barber Changes affecting the build procedure 4195ba2b2efdSGlen Barber 4196ba2b2efdSGlen Barber The builder can specify which programs to use, if any, instead of 4197ba2b2efdSGlen Barber 'ar' and 'ranlib', and libtz.a is now built locally before being 4198ba2b2efdSGlen Barber installed. (Thanks to Michael Forney.) 4199ba2b2efdSGlen Barber 4200ba2b2efdSGlen Barber A dependency typo in the 'zdump' rule has been fixed. 4201ba2b2efdSGlen Barber (Thanks to Andrew Paprocki.) 4202ba2b2efdSGlen Barber 4203ba2b2efdSGlen Barber The Makefile has been simplified by assuming that 'mkdir -p' and 'cp -f' 4204ba2b2efdSGlen Barber work as specified by POSIX.2-1992 or later; this is portable nowadays. 4205ba2b2efdSGlen Barber 4206ba2b2efdSGlen Barber 'make clean' no longer removes 'leapseconds', since it's 4207ba2b2efdSGlen Barber host-independent and is part of the distribution. 4208ba2b2efdSGlen Barber 4209ba2b2efdSGlen Barber The unused makefile macros TZCSRCS, TZDSRCS, DATESRCS have been removed. 4210ba2b2efdSGlen Barber 4211ba2b2efdSGlen Barber Changes affecting documentation and commentary 4212ba2b2efdSGlen Barber 4213ba2b2efdSGlen Barber tz-link.htm now mentions TC TIMEZONE's draft time zone service protocol 4214ba2b2efdSGlen Barber (thanks to Mike Douglass) and TimezoneJS.Date (thanks to Jim Fehrle). 4215ba2b2efdSGlen Barber 4216ba2b2efdSGlen Barber Update URLs in tz-link page. Add URLs for Microsoft Windows, since 4217ba2b2efdSGlen Barber 8.1 introduces tz support. Remove URLs for Tru64 and UnixWare (no 4218ba2b2efdSGlen Barber longer maintained) and for old advisories. SOFA now does C. 4219ba2b2efdSGlen Barber 4220ba2b2efdSGlen BarberRelease 2013g - 2013-09-30 21:08:26 -0700 4221ba2b2efdSGlen Barber 4222ba2b2efdSGlen Barber Changes affecting current and near-future timestamps 4223ba2b2efdSGlen Barber 4224ba2b2efdSGlen Barber Morocco now observes DST from the last Sunday in March to the last 4225ba2b2efdSGlen Barber Sunday in October, not April to September respectively. (Thanks 4226ba2b2efdSGlen Barber to Steffen Thorsen.) 4227ba2b2efdSGlen Barber 4228ba2b2efdSGlen Barber Changes affecting 'zic' 4229ba2b2efdSGlen Barber 4230ba2b2efdSGlen Barber 'zic' now runs on platforms that lack both hard links and symlinks. 4231ba2b2efdSGlen Barber (Thanks to Theo Veenker for reporting the problem, for MinGW.) 4232ba2b2efdSGlen Barber Also, fix some bugs on platforms that lack hard links but have symlinks. 4233ba2b2efdSGlen Barber 4234ba2b2efdSGlen Barber 'zic -v' again warns that Asia/Tehran has no POSIX environment variable 4235ba2b2efdSGlen Barber to predict the far future, fixing a bug introduced in 2013e. 4236ba2b2efdSGlen Barber 4237ba2b2efdSGlen Barber Changes affecting the build procedure 4238ba2b2efdSGlen Barber 4239ba2b2efdSGlen Barber The 'leapseconds' file is again put into the tzdata tarball. 4240ba2b2efdSGlen Barber Also, 'leapseconds.awk', so tzdata is self-contained. (Thanks to 4241ba2b2efdSGlen Barber Matt Burgess and Ian Abbott.) The timestamps of these and other 4242ba2b2efdSGlen Barber dependent files in tarballs are adjusted more consistently. 4243ba2b2efdSGlen Barber 4244ba2b2efdSGlen Barber Changes affecting documentation and commentary 4245ba2b2efdSGlen Barber 4246ba2b2efdSGlen Barber The README file is now part of the data tarball as well as the code. 4247ba2b2efdSGlen Barber It now states that files are public domain unless otherwise specified. 4248ba2b2efdSGlen Barber (Thanks to Andrew Main (Zefram) for asking for clarifications.) 4249ba2b2efdSGlen Barber Its details about the 1989 release moved to a place of honor near 4250ba2b2efdSGlen Barber the end of NEWS. 4251ba2b2efdSGlen Barber 4252ba2b2efdSGlen Barber 4253ba2b2efdSGlen BarberRelease 2013f - 2013-09-24 23:37:36 -0700 4254ba2b2efdSGlen Barber 4255ba2b2efdSGlen Barber Changes affecting near-future timestamps 4256ba2b2efdSGlen Barber 4257ba2b2efdSGlen Barber Tocantins will very likely not observe DST starting this spring. 4258ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) 4259ba2b2efdSGlen Barber 4260ba2b2efdSGlen Barber Jordan will likely stay at UT +03 indefinitely, and will not fall 4261ba2b2efdSGlen Barber back this fall. 4262ba2b2efdSGlen Barber 4263ba2b2efdSGlen Barber Palestine will fall back at 00:00, not 01:00. (Thanks to Steffen Thorsen.) 4264ba2b2efdSGlen Barber 4265ba2b2efdSGlen Barber Changes affecting API 4266ba2b2efdSGlen Barber 4267ba2b2efdSGlen Barber The types of the global variables 'timezone' and 'altzone' (if present) 4268ba2b2efdSGlen Barber have been changed back to 'long'. This is required for 'timezone' 4269ba2b2efdSGlen Barber by POSIX, and for 'altzone' by common practice, e.g., Solaris 11. 4270ba2b2efdSGlen Barber These variables were originally 'long' in the tz code, but were 4271ba2b2efdSGlen Barber mistakenly changed to 'time_t' in 1987; nobody reported the 4272ba2b2efdSGlen Barber incompatibility until now. The difference matters on x32, where 4273ba2b2efdSGlen Barber 'long' is 32 bits and 'time_t' is 64. (Thanks to Elliott Hughes.) 4274ba2b2efdSGlen Barber 4275ba2b2efdSGlen Barber Changes affecting the build procedure 4276ba2b2efdSGlen Barber 4277ba2b2efdSGlen Barber Avoid long strings in leapseconds.awk to work around a mawk bug. 4278ba2b2efdSGlen Barber (Thanks to Cyril Baurand.) 4279ba2b2efdSGlen Barber 4280ba2b2efdSGlen Barber Changes affecting documentation and commentary 4281ba2b2efdSGlen Barber 4282ba2b2efdSGlen Barber New file 'NEWS' that contains release notes like this one. 4283ba2b2efdSGlen Barber 4284ba2b2efdSGlen Barber Paraguay's law does not specify DST transition time; 00:00 is customary. 4285ba2b2efdSGlen Barber (Thanks to Waldemar Villamayor-Venialbo.) 4286ba2b2efdSGlen Barber 4287ba2b2efdSGlen Barber Minor capitalization fixes. 4288ba2b2efdSGlen Barber 4289ba2b2efdSGlen Barber Changes affecting version-control only 4290ba2b2efdSGlen Barber 4291ba2b2efdSGlen Barber The experimental GitHub repository now contains annotated and 4292ba2b2efdSGlen Barber signed tags for recent releases, e.g., '2013e' for Release 2013e. 4293ba2b2efdSGlen Barber Releases are tagged starting with 2012e; earlier releases were 4294ba2b2efdSGlen Barber done differently, and tags would either not have a simple name or 4295ba2b2efdSGlen Barber not exactly match what was released. 4296ba2b2efdSGlen Barber 4297ba2b2efdSGlen Barber 'make set-timestamps' is now simpler and a bit more portable. 4298ba2b2efdSGlen Barber 4299ba2b2efdSGlen Barber 4300ba2b2efdSGlen BarberRelease 2013e - 2013-09-19 23:50:04 -0700 4301ba2b2efdSGlen Barber 4302ba2b2efdSGlen Barber Changes affecting near-future timestamps 4303ba2b2efdSGlen Barber 4304ba2b2efdSGlen Barber This year Fiji will start DST on October 27, not October 20. 4305ba2b2efdSGlen Barber (Thanks to David Wheeler for the heads-up.) For now, guess that 4306ba2b2efdSGlen Barber Fiji will continue to spring forward the Sunday before the fourth 4307ba2b2efdSGlen Barber Monday in October. 4308ba2b2efdSGlen Barber 4309ba2b2efdSGlen Barber Changes affecting current and future time zone abbreviations 4310ba2b2efdSGlen Barber 4311ba2b2efdSGlen Barber Use WIB/WITA/WIT rather than WIT/CIT/EIT for alphabetic Indonesian 4312ba2b2efdSGlen Barber time zone abbreviations since 1932. (Thanks to George Ziegler, 4313ba2b2efdSGlen Barber Priyadi Iman Nurcahyo, Zakaria, Jason Grimes, Martin Pitt, and 4314ba2b2efdSGlen Barber Benny Lin.) This affects Asia/Dili, Asia/Jakarta, Asia/Jayapura, 4315ba2b2efdSGlen Barber Asia/Makassar, and Asia/Pontianak. 4316ba2b2efdSGlen Barber 4317ba2b2efdSGlen Barber Use ART (UT -03, standard time), rather than WARST (also -03, but 4318ba2b2efdSGlen Barber daylight saving time) for San Luis, Argentina since 2009. 4319ba2b2efdSGlen Barber 4320ba2b2efdSGlen Barber Changes affecting Godthåb timestamps after 2037 if version mismatch 4321ba2b2efdSGlen Barber 4322ba2b2efdSGlen Barber Allow POSIX-like TZ strings where the transition time's hour can 4323ba2b2efdSGlen Barber range from -167 through 167, instead of the POSIX-required 0 4324ba2b2efdSGlen Barber through 24. E.g., TZ='FJT-12FJST,M10.3.1/146,M1.3.4/75' for the 4325259e2ad7SPhilip Paeps new Fiji rules. This is a more compact way to represent 4326ba2b2efdSGlen Barber far-future timestamps for America/Godthab, America/Santiago, 4327ba2b2efdSGlen Barber Antarctica/Palmer, Asia/Gaza, Asia/Hebron, Asia/Jerusalem, 4328ba2b2efdSGlen Barber Pacific/Easter, and Pacific/Fiji. Other zones are unaffected by 4329ba2b2efdSGlen Barber this change. (Derived from a suggestion by Arthur David Olson.) 4330ba2b2efdSGlen Barber 4331ba2b2efdSGlen Barber Allow POSIX-like TZ strings where daylight saving time is in 4332ba2b2efdSGlen Barber effect all year. E.g., TZ='WART4WARST,J1/0,J365/25' for Western 4333259e2ad7SPhilip Paeps Argentina Summer Time all year. This supports a more compact way 4334ba2b2efdSGlen Barber to represent the 2013d data for America/Argentina/San_Luis. 4335ba2b2efdSGlen Barber Because of the change for San Luis noted above this change does not 4336ba2b2efdSGlen Barber affect the current data. (Thanks to Andrew Main (Zefram) for 4337ba2b2efdSGlen Barber suggestions that improved this change.) 4338ba2b2efdSGlen Barber 4339ba2b2efdSGlen Barber Where these two TZ changes take effect, there is a minor extension 4340ba2b2efdSGlen Barber to the tz file format in that it allows new values for the 4341ba2b2efdSGlen Barber embedded TZ-format string, and the tz file format version number 4342ba2b2efdSGlen Barber has therefore been increased from 2 to 3 as a precaution. 4343ba2b2efdSGlen Barber Version-2-based client code should continue to work as before for 4344ba2b2efdSGlen Barber all timestamps before 2038. Existing version-2-based client code 4345ba2b2efdSGlen Barber (tzcode, GNU/Linux, Solaris) has been tested on version-3-format 4346ba2b2efdSGlen Barber files, and typically works in practice even for timestamps after 4347ba2b2efdSGlen Barber 2037; the only known exception is America/Godthab. 4348ba2b2efdSGlen Barber 4349ba2b2efdSGlen Barber Changes affecting timestamps before 1970 4350ba2b2efdSGlen Barber 4351ba2b2efdSGlen Barber Pacific/Johnston is now a link to Pacific/Honolulu. This corrects 4352ba2b2efdSGlen Barber some errors before 1947. 4353ba2b2efdSGlen Barber 4354ba2b2efdSGlen Barber Some zones have been turned into links, when they differ from existing 4355ba2b2efdSGlen Barber zones only in older data entries that were likely invented or that 4356ba2b2efdSGlen Barber differ only in LMT or transitions from LMT. These changes affect 4357ba2b2efdSGlen Barber only timestamps before 1943. The affected zones are: 4358ba2b2efdSGlen Barber Africa/Juba, America/Anguilla, America/Aruba, America/Dominica, 4359ba2b2efdSGlen Barber America/Grenada, America/Guadeloupe, America/Marigot, 4360ba2b2efdSGlen Barber America/Montserrat, America/St_Barthelemy, America/St_Kitts, 4361ba2b2efdSGlen Barber America/St_Lucia, America/St_Thomas, America/St_Vincent, 4362ba2b2efdSGlen Barber America/Tortola, and Europe/Vaduz. (Thanks to Alois Treindl for 4363ba2b2efdSGlen Barber confirming that the old Europe/Vaduz zone was wrong and the new 4364ba2b2efdSGlen Barber link is better for WWII-era times.) 4365ba2b2efdSGlen Barber 4366ba2b2efdSGlen Barber Change Kingston Mean Time from -5:07:12 to -5:07:11. This affects 4367ba2b2efdSGlen Barber America/Cayman, America/Jamaica and America/Grand_Turk timestamps 4368ba2b2efdSGlen Barber from 1890 to 1912. 4369ba2b2efdSGlen Barber 4370ba2b2efdSGlen Barber Change the UT offset of Bern Mean Time from 0:29:44 to 0:29:46. 4371ba2b2efdSGlen Barber This affects Europe/Zurich timestamps from 1853 to 1894. (Thanks 43722865ab3fSPhilip Paeps to Alois Treindl.) 4373ba2b2efdSGlen Barber 4374ba2b2efdSGlen Barber Change the date of the circa-1850 Zurich transition from 1849-09-12 4375ba2b2efdSGlen Barber to 1853-07-16, overriding Shanks with data from Messerli about 4376ba2b2efdSGlen Barber postal and telegraph time in Switzerland. 4377ba2b2efdSGlen Barber 4378ba2b2efdSGlen Barber Changes affecting time zone abbreviations before 1970 4379ba2b2efdSGlen Barber 4380ba2b2efdSGlen Barber For Asia/Jakarta, use BMT (not JMT) for mean time from 1923 to 1932, 4381ba2b2efdSGlen Barber as Jakarta was called Batavia back then. 4382ba2b2efdSGlen Barber 4383ba2b2efdSGlen Barber Changes affecting API 4384ba2b2efdSGlen Barber 4385ba2b2efdSGlen Barber The 'zic' command now outputs a dummy transition when far-future 4386ba2b2efdSGlen Barber data can't be summarized using a TZ string, and uses a 402-year 4387ba2b2efdSGlen Barber window rather than a 400-year window. For the current data, this 4388ba2b2efdSGlen Barber affects only the Asia/Tehran file. It does not affect any of the 4389ba2b2efdSGlen Barber timestamps that this file represents, so zdump outputs the same 4390ba2b2efdSGlen Barber information as before. (Thanks to Andrew Main (Zefram).) 4391ba2b2efdSGlen Barber 4392ba2b2efdSGlen Barber The 'date' command has a new '-r' option, which lets you specify 4393ba2b2efdSGlen Barber the integer time to display, a la FreeBSD. 4394ba2b2efdSGlen Barber 4395ba2b2efdSGlen Barber The 'tzselect' command has two new options '-c' and '-n', which lets you 4396ba2b2efdSGlen Barber select a zone based on latitude and longitude. 4397ba2b2efdSGlen Barber 4398ba2b2efdSGlen Barber The 'zic' command's '-v' option now warns about constructs that 4399ba2b2efdSGlen Barber require the new version-3 binary file format. (Thanks to Arthur 4400ba2b2efdSGlen Barber David Olson for the suggestion.) 4401ba2b2efdSGlen Barber 4402ba2b2efdSGlen Barber Support for floating-point time_t has been removed. 4403ba2b2efdSGlen Barber It was always dicey, and POSIX no longer requires it. 4404ba2b2efdSGlen Barber (Thanks to Eric Blake for suggesting to the POSIX committee to 4405ba2b2efdSGlen Barber remove it, and thanks to Alan Barrett, Clive D.W. Feather, Andy 4406ba2b2efdSGlen Barber Heninger, Arthur David Olson, and Alois Treindl, for reporting 4407ba2b2efdSGlen Barber bugs and elucidating some of the corners of the old floating-point 4408ba2b2efdSGlen Barber implementation.) 4409ba2b2efdSGlen Barber 4410ba2b2efdSGlen Barber The signatures of 'offtime', 'timeoff', and 'gtime' have been 4411ba2b2efdSGlen Barber changed back to the old practice of using 'long' to represent UT 4412ba2b2efdSGlen Barber offsets. This had been inadvertently and mistakenly changed to 4413ba2b2efdSGlen Barber 'int_fast32_t'. (Thanks to Christos Zoulas.) 4414ba2b2efdSGlen Barber 4415ba2b2efdSGlen Barber The code avoids undefined behavior on integer overflow in some 4416ba2b2efdSGlen Barber more places, including gmtime, localtime, mktime and zdump. 4417ba2b2efdSGlen Barber 4418ba2b2efdSGlen Barber Changes affecting the zdump utility 4419ba2b2efdSGlen Barber 4420ba2b2efdSGlen Barber zdump now outputs "UT" when referring to Universal Time, not "UTC". 4421ba2b2efdSGlen Barber "UTC" does not make sense for timestamps that predate the introduction 4422259e2ad7SPhilip Paeps of UTC, whereas "UT", a more generic term, does. (Thanks to Steve Allen 4423ba2b2efdSGlen Barber for clarifying UT vs UTC.) 4424ba2b2efdSGlen Barber 4425ba2b2efdSGlen Barber Data changes affecting behavior of tzselect and similar programs 4426ba2b2efdSGlen Barber 4427259e2ad7SPhilip Paeps Country code BQ is now called the more common name "Caribbean Netherlands" 4428259e2ad7SPhilip Paeps rather than the more official "Bonaire, St Eustatius & Saba". 4429ba2b2efdSGlen Barber 4430ba2b2efdSGlen Barber Remove from zone.tab the names America/Montreal, America/Shiprock, 4431ba2b2efdSGlen Barber and Antarctica/South_Pole, as they are equivalent to existing 4432ba2b2efdSGlen Barber same-country-code zones for post-1970 timestamps. The data entries for 4433ba2b2efdSGlen Barber these names are unchanged, so the names continue to work as before. 4434ba2b2efdSGlen Barber 4435ba2b2efdSGlen Barber Changes affecting code internals 4436ba2b2efdSGlen Barber 4437ba2b2efdSGlen Barber zic -c now runs way faster on 64-bit hosts when given large numbers. 4438ba2b2efdSGlen Barber 4439ba2b2efdSGlen Barber zic now uses vfprintf to avoid allocating and freeing some memory. 4440ba2b2efdSGlen Barber 4441ba2b2efdSGlen Barber tzselect now computes the list of continents from the data, 4442ba2b2efdSGlen Barber rather than have it hard-coded. 4443ba2b2efdSGlen Barber 4444ba2b2efdSGlen Barber Minor changes pacify GCC 4.7.3 and GCC 4.8.1. 4445ba2b2efdSGlen Barber 4446ba2b2efdSGlen Barber Changes affecting the build procedure 4447ba2b2efdSGlen Barber 4448ba2b2efdSGlen Barber The 'leapseconds' file is now generated automatically from a 4449ba2b2efdSGlen Barber new file 'leap-seconds.list', which is a copy of 44508d7edd17SPhilip Paeps <ftp://ftp.nist.gov/pub/time/leap-seconds.list> 4451ba2b2efdSGlen Barber A new source file 'leapseconds.awk' implements this. 4452ba2b2efdSGlen Barber The goal is simplification of the future maintenance of 'leapseconds'. 4453ba2b2efdSGlen Barber 4454ba2b2efdSGlen Barber When building the 'posix' or 'right' subdirectories, if the 4455ba2b2efdSGlen Barber subdirectory would be a copy of the default subdirectory, it is 4456ba2b2efdSGlen Barber now made a symbolic link if that is supported. This saves about 4457ba2b2efdSGlen Barber 2 MB of file system space. 4458ba2b2efdSGlen Barber 4459ba2b2efdSGlen Barber The links America/Shiprock and Antarctica/South_Pole have been 4460ba2b2efdSGlen Barber moved to the 'backward' file. This affects only nondefault builds 4461ba2b2efdSGlen Barber that omit 'backward'. 4462ba2b2efdSGlen Barber 4463ba2b2efdSGlen Barber Changes affecting version-control only 4464ba2b2efdSGlen Barber 4465ba2b2efdSGlen Barber .gitignore now ignores 'date'. 4466ba2b2efdSGlen Barber 4467ba2b2efdSGlen Barber Changes affecting documentation and commentary 4468ba2b2efdSGlen Barber 4469ba2b2efdSGlen Barber Changes to the 'tzfile' man page 4470ba2b2efdSGlen Barber 4471ba2b2efdSGlen Barber It now mentions that the binary file format may be extended in 4472ba2b2efdSGlen Barber future versions by appending data. 4473ba2b2efdSGlen Barber 4474ba2b2efdSGlen Barber It now refers to the 'zdump' and 'zic' man pages. 4475ba2b2efdSGlen Barber 4476ba2b2efdSGlen Barber Changes to the 'zic' man page 4477ba2b2efdSGlen Barber 4478ba2b2efdSGlen Barber It lists conditions that elicit a warning with '-v'. 4479ba2b2efdSGlen Barber 4480ba2b2efdSGlen Barber It says that the behavior is unspecified when duplicate names 4481ba2b2efdSGlen Barber are given, or if the source of one link is the target of another. 4482ba2b2efdSGlen Barber 4483ba2b2efdSGlen Barber Its examples are updated to match the latest data. 4484ba2b2efdSGlen Barber 4485ba2b2efdSGlen Barber The definition of white space has been clarified slightly. 4486ba2b2efdSGlen Barber (Thanks to Michael Deckers.) 4487ba2b2efdSGlen Barber 4488ba2b2efdSGlen Barber Changes to the 'Theory' file 4489ba2b2efdSGlen Barber 4490ba2b2efdSGlen Barber There is a new section about the accuracy of the tz database, 4491ba2b2efdSGlen Barber describing the many ways that errors can creep in, and 4492ba2b2efdSGlen Barber explaining why so many of the pre-1970 timestamps are wrong or 4493ba2b2efdSGlen Barber misleading (thanks to Steve Allen, Lester Caine, and Garrett 4494ba2b2efdSGlen Barber Wollman for discussions that contributed to this). 4495ba2b2efdSGlen Barber 4496ba2b2efdSGlen Barber The 'Theory' file describes LMT better (this follows a 4497ba2b2efdSGlen Barber suggestion by Guy Harris). 4498ba2b2efdSGlen Barber 4499ba2b2efdSGlen Barber It refers to the 2013 edition of POSIX rather than the 2004 edition. 4500ba2b2efdSGlen Barber 4501ba2b2efdSGlen Barber It's mentioned that excluding 'backward' should not affect the 4502ba2b2efdSGlen Barber other data, and it suggests at least one zone.tab name per 4503ba2b2efdSGlen Barber inhabited country (thanks to Stephen Colebourne). 4504ba2b2efdSGlen Barber 4505ba2b2efdSGlen Barber Some longstanding restrictions on names are documented, e.g., 4506ba2b2efdSGlen Barber 'America/New_York' precludes 'America/New_York/Bronx'. 4507ba2b2efdSGlen Barber 4508ba2b2efdSGlen Barber It gives more reasons for the 1970 cutoff. 4509ba2b2efdSGlen Barber 4510ba2b2efdSGlen Barber It now mentions which time_t variants are supported, such as 4511ba2b2efdSGlen Barber signed integer time_t. (Thanks to Paul Goyette for reporting 4512ba2b2efdSGlen Barber typos in an experimental version of this change.) 4513ba2b2efdSGlen Barber 4514ba2b2efdSGlen Barber (Thanks to Philip Newton for correcting typos in these changes.) 4515ba2b2efdSGlen Barber 4516ba2b2efdSGlen Barber Documentation and commentary is more careful to distinguish UT in 4517ba2b2efdSGlen Barber general from UTC in particular. (Thanks to Steve Allen.) 4518ba2b2efdSGlen Barber 4519ba2b2efdSGlen Barber Add a better source for the Zurich 1894 transition. 4520ba2b2efdSGlen Barber (Thanks to Pierre-Yves Berger.) 4521ba2b2efdSGlen Barber 4522ba2b2efdSGlen Barber Update shapefile citations in tz-link.htm. (Thanks to Guy Harris.) 4523ba2b2efdSGlen Barber 4524ba2b2efdSGlen Barber 4525ba2b2efdSGlen BarberRelease 2013d - 2013-07-05 07:38:01 -0700 4526ba2b2efdSGlen Barber 4527ba2b2efdSGlen Barber Changes affecting future timestamps: 4528ba2b2efdSGlen Barber 4529ba2b2efdSGlen Barber Morocco's midsummer transitions this year are July 7 and August 10, 4530ba2b2efdSGlen Barber not July 9 and August 8. (Thanks to Andrew Paprocki.) 4531ba2b2efdSGlen Barber 4532ba2b2efdSGlen Barber Israel now falls back on the last Sunday of October. 4533ba2b2efdSGlen Barber (Thanks to Ephraim Silverberg.) 4534ba2b2efdSGlen Barber 4535ba2b2efdSGlen Barber Changes affecting past timestamps: 4536ba2b2efdSGlen Barber 4537ba2b2efdSGlen Barber Specify Jerusalem's location more precisely; this changes the pre-1880 4538ba2b2efdSGlen Barber times by 2 s. 4539ba2b2efdSGlen Barber 4540ba2b2efdSGlen Barber Changing affecting metadata only: 4541ba2b2efdSGlen Barber 4542ba2b2efdSGlen Barber Fix typos in the entries for country codes BQ and SX. 4543ba2b2efdSGlen Barber 4544ba2b2efdSGlen Barber Changes affecting code: 4545ba2b2efdSGlen Barber 4546ba2b2efdSGlen Barber Rework the code to fix a bug with handling Australia/Macquarie on 4547ba2b2efdSGlen Barber 32-bit hosts (thanks to Arthur David Olson). 4548ba2b2efdSGlen Barber 4549ba2b2efdSGlen Barber Port to platforms like NetBSD, where time_t can be wider than long. 4550ba2b2efdSGlen Barber 4551ba2b2efdSGlen Barber Add support for testing time_t types other than the system's. 4552ba2b2efdSGlen Barber Run 'make check_time_t_alternatives' to try this out. 4553ba2b2efdSGlen Barber Currently, the tests fail for unsigned time_t; 4554ba2b2efdSGlen Barber this should get fixed at some point. 4555ba2b2efdSGlen Barber 4556ba2b2efdSGlen Barber Changes affecting documentation and commentary: 4557ba2b2efdSGlen Barber 4558ba2b2efdSGlen Barber Deemphasize the significance of national borders. 4559ba2b2efdSGlen Barber 4560ba2b2efdSGlen Barber Update the zdump man page. 4561ba2b2efdSGlen Barber 4562ba2b2efdSGlen Barber Remove obsolete NOID comment (thanks to Denis Excoffier). 4563ba2b2efdSGlen Barber 4564ba2b2efdSGlen Barber Update several URLs and comments in the web pages. 4565ba2b2efdSGlen Barber 4566ba2b2efdSGlen Barber Spelling fixes (thanks to Kevin Lyda and Jonathan Leffler). 4567ba2b2efdSGlen Barber 4568ba2b2efdSGlen Barber Update URL for CLDR Zone->Tzid table (thanks to Yoshito Umaoka). 4569ba2b2efdSGlen Barber 4570ba2b2efdSGlen Barber 4571ba2b2efdSGlen BarberRelease 2013c - 2013-04-19 16:17:40 -0700 4572ba2b2efdSGlen Barber 4573ba2b2efdSGlen Barber Changes affecting current and future timestamps: 4574ba2b2efdSGlen Barber 4575ba2b2efdSGlen Barber Palestine observed DST starting March 29, 2013. (Thanks to 4576ba2b2efdSGlen Barber Steffen Thorsen.) From 2013 on, Gaza and Hebron both observe DST, 4577ba2b2efdSGlen Barber with the predicted rules being the last Thursday in March at 24:00 4578ba2b2efdSGlen Barber to the first Friday on or after September 21 at 01:00. 4579ba2b2efdSGlen Barber 4580ba2b2efdSGlen Barber Assume that the recent change to Paraguay's DST rules is permanent, 4581ba2b2efdSGlen Barber by moving the end of DST to the 4th Sunday in March every year. 4582ba2b2efdSGlen Barber (Thanks to Carlos Raúl Perasso.) 4583ba2b2efdSGlen Barber 4584ba2b2efdSGlen Barber Changes affecting past timestamps: 4585ba2b2efdSGlen Barber 4586ba2b2efdSGlen Barber Fix some historical data for Palestine to agree with that of 4587ba2b2efdSGlen Barber timeanddate.com, as follows: 4588ba2b2efdSGlen Barber 4589ba2b2efdSGlen Barber The spring 2008 change in Gaza and Hebron was on 00:00 Mar 28, not 4590ba2b2efdSGlen Barber 00:00 Apr 1. 4591ba2b2efdSGlen Barber 4592ba2b2efdSGlen Barber The fall 2009 change in Gaza and Hebron on Sep 4 was at 01:00, not 4593ba2b2efdSGlen Barber 02:00. 4594ba2b2efdSGlen Barber 4595ba2b2efdSGlen Barber The spring 2010 change in Hebron was 00:00 Mar 26, not 00:01 Mar 27. 4596ba2b2efdSGlen Barber 4597ba2b2efdSGlen Barber The spring 2011 change in Gaza was 00:01 Apr 1, not 12:01 Apr 2. 4598ba2b2efdSGlen Barber 4599ba2b2efdSGlen Barber The spring 2011 change in Hebron on Apr 1 was at 00:01, not 12:01. 4600ba2b2efdSGlen Barber 4601ba2b2efdSGlen Barber The fall 2011 change in Hebron on Sep 30 was at 00:00, not 03:00. 4602ba2b2efdSGlen Barber 4603ba2b2efdSGlen Barber Fix times of habitation for Macquarie to agree with the Tasmania 4604ba2b2efdSGlen Barber Parks & Wildlife Service history, which indicates that permanent 4605ba2b2efdSGlen Barber habitation was 1899-1919 and 1948 on. 4606ba2b2efdSGlen Barber 4607ba2b2efdSGlen Barber Changing affecting metadata only: 4608ba2b2efdSGlen Barber 4609ba2b2efdSGlen Barber Macquarie Island is politically part of Australia, not Antarctica. 4610ba2b2efdSGlen Barber (Thanks to Tobias Conradi.) 4611ba2b2efdSGlen Barber 4612259e2ad7SPhilip Paeps Sort Macquarie more consistently with other parts of Australia. 4613ba2b2efdSGlen Barber (Thanks to Tim Parenti.) 4614ba2b2efdSGlen Barber 4615ba2b2efdSGlen Barber 4616ba2b2efdSGlen BarberRelease 2013b - 2013-03-10 22:33:40 -0700 4617ba2b2efdSGlen Barber 4618ba2b2efdSGlen Barber Changes affecting current and future timestamps: 4619ba2b2efdSGlen Barber 4620ba2b2efdSGlen Barber Haiti uses US daylight-saving rules this year, and presumably future years. 4621ba2b2efdSGlen Barber This changes timestamps starting today. (Thanks to Steffen Thorsen.) 4622ba2b2efdSGlen Barber 4623ba2b2efdSGlen Barber Paraguay will end DST on March 24 this year. 4624ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) For now, assume it's just this year. 4625ba2b2efdSGlen Barber 4626ba2b2efdSGlen Barber Morocco does not observe DST during Ramadan; 4627ba2b2efdSGlen Barber try to predict Ramadan in Morocco as best we can. 4628ba2b2efdSGlen Barber (Thanks to Erik Homoet for the heads-up.) 4629ba2b2efdSGlen Barber 4630ba2b2efdSGlen Barber Changes affecting commentary: 4631ba2b2efdSGlen Barber 4632ba2b2efdSGlen Barber Update URLs in tz-link page. Add URLs for webOS, BB10, iOS. 4633ba2b2efdSGlen Barber Update URL for Solaris. Mention Internet RFC 6557. 4634ba2b2efdSGlen Barber Update Internet RFCs 2445->5545, 2822->5322. 4635ba2b2efdSGlen Barber Switch from FTP to HTTP for Internet RFCs. 4636ba2b2efdSGlen Barber 4637ba2b2efdSGlen Barber 4638ba2b2efdSGlen BarberRelease 2013a - 2013-02-27 09:20:35 -0800 4639ba2b2efdSGlen Barber 4640ba2b2efdSGlen Barber Change affecting binary data format: 4641ba2b2efdSGlen Barber 4642ba2b2efdSGlen Barber The zone offset at the end of version-2-format zone files is now 4643ba2b2efdSGlen Barber allowed to be 24:00, as per POSIX.1-2008. (Thanks to Arthur David Olson.) 4644ba2b2efdSGlen Barber 4645ba2b2efdSGlen Barber Changes affecting current and future timestamps: 4646ba2b2efdSGlen Barber 4647ba2b2efdSGlen Barber Chile's 2013 rules, and we guess rules for 2014 and later, will be 4648ba2b2efdSGlen Barber the same as 2012, namely Apr Sun>=23 03:00 UTC to Sep Sun>=2 04:00 UTC. 4649ba2b2efdSGlen Barber (Thanks to Steffen Thorsen and Robert Elz.) 4650ba2b2efdSGlen Barber 4651ba2b2efdSGlen Barber New Zones Asia/Khandyga, Asia/Ust-Nera, Europe/Busingen. 4652ba2b2efdSGlen Barber (Thanks to Tobias Conradi and Arthur David Olson.) 4653ba2b2efdSGlen Barber 4654ba2b2efdSGlen Barber Many changes affect historical timestamps before 1940. 4655ba2b2efdSGlen Barber These were deduced from: Milne J. Civil time. Geogr J. 1899 46568d7edd17SPhilip Paeps Feb;13(2):173-94 <https://www.jstor.org/stable/1774359>. 4657ba2b2efdSGlen Barber 4658ba2b2efdSGlen Barber Changes affecting the code: 4659ba2b2efdSGlen Barber 4660ba2b2efdSGlen Barber Fix zic bug that mishandled Egypt's 2010 changes (this also affected 4661ba2b2efdSGlen Barber the data). (Thanks to Arthur David Olson.) 4662ba2b2efdSGlen Barber 4663ba2b2efdSGlen Barber Fix localtime bug when time_t is unsigned and data files were generated 4664ba2b2efdSGlen Barber by a signed time_t system. (Thanks to Doug Bailey for reporting and 4665ba2b2efdSGlen Barber to Arthur David Olson for fixing.) 4666ba2b2efdSGlen Barber 4667ba2b2efdSGlen Barber Allow the email address for bug reports to be set by the packager. 4668ba2b2efdSGlen Barber The default is tz@iana.org, as before. (Thanks to Joseph S. Myers.) 4669ba2b2efdSGlen Barber 4670ba2b2efdSGlen Barber Update HTML checking to be compatible with Ubuntu 12.10. 4671ba2b2efdSGlen Barber 4672ba2b2efdSGlen Barber Check that files are a safe subset of ASCII. At some point we may 4673ba2b2efdSGlen Barber relax this requirement to a safe subset of UTF-8. Without the 4674ba2b2efdSGlen Barber check, some non-UTF-8 encodings were leaking into the distribution. 4675ba2b2efdSGlen Barber 4676ba2b2efdSGlen Barber Commentary changes: 4677ba2b2efdSGlen Barber 4678ba2b2efdSGlen Barber Restore a comment about copyright notices that was inadvertently deleted. 4679ba2b2efdSGlen Barber (Thanks to Arthur David Olson.) 4680ba2b2efdSGlen Barber 4681ba2b2efdSGlen Barber Improve the commentary about which districts observe what times 46822865ab3fSPhilip Paeps in Russia. (Thanks to Oscar van Vlijmen and Arthur David Olson.) 4683ba2b2efdSGlen Barber 4684ba2b2efdSGlen Barber Add web page links to tz.js. 4685ba2b2efdSGlen Barber 4686ba2b2efdSGlen Barber Add "Run by the Monkeys" to tz-art. (Thanks to Arthur David Olson.) 4687ba2b2efdSGlen Barber 4688ba2b2efdSGlen Barber 4689ba2b2efdSGlen BarberRelease 2012j - 2012-11-12 18:34:49 -0800 4690ba2b2efdSGlen Barber 4691ba2b2efdSGlen Barber Libya moved to CET this weekend, but with DST planned next year. 4692ba2b2efdSGlen Barber (Thanks to Even Scharning, Steffen Thorsen, and Tim Parenti.) 4693ba2b2efdSGlen Barber 4694ba2b2efdSGlen Barber Signatures now have the extension .asc, not .sign, as that's more 4695ba2b2efdSGlen Barber standard. (Thanks to Phil Pennock.) 4696ba2b2efdSGlen Barber 4697ba2b2efdSGlen Barber The output of 'zdump --version', and of 'zic --version', now 4698ba2b2efdSGlen Barber uses a format that is more typical for --version. 4699ba2b2efdSGlen Barber (Thanks to Joseph S. Myers.) 4700ba2b2efdSGlen Barber 4701ba2b2efdSGlen Barber The output of 'tzselect --help', 'zdump --help', and 'zic --help' 4702ba2b2efdSGlen Barber now uses tz@iana.org rather than the old elsie address. 4703ba2b2efdSGlen Barber 4704ba2b2efdSGlen Barber zic -v now complains about abbreviations that are less than 3 4705eebb9c2cSPhilip Paeps or more than 6 characters, as per POSIX. Formerly, it checked 4706ba2b2efdSGlen Barber for abbreviations that were more than 3. 4707ba2b2efdSGlen Barber 4708ba2b2efdSGlen Barber 'make public' no longer puts its temporary directory under /tmp, 4709ba2b2efdSGlen Barber and uses the just-built zic rather than the system zic. 4710ba2b2efdSGlen Barber 4711ba2b2efdSGlen Barber Various fixes to documentation and commentary. 4712ba2b2efdSGlen Barber 4713ba2b2efdSGlen Barber 4714ba2b2efdSGlen BarberRelease 2012i - 2012-11-03 12:57:09 -0700 4715ba2b2efdSGlen Barber 4716ba2b2efdSGlen Barber Cuba switches from DST tomorrow at 01:00. (Thanks to Steffen Thorsen.) 4717ba2b2efdSGlen Barber 4718ba2b2efdSGlen Barber Linker flags can now be specified via LDFLAGS. 4719ba2b2efdSGlen Barber AWK now defaults to 'awk', not 'nawk'. 4720ba2b2efdSGlen Barber The shell in tzselect now defaults to /bin/bash, but this can 4721ba2b2efdSGlen Barber be overridden by specifying KSHELL. 4722ba2b2efdSGlen Barber The main web page now mentions the unofficial GitHub repository. 4723ba2b2efdSGlen Barber (Thanks to Mike Frysinger.) 4724ba2b2efdSGlen Barber 4725ba2b2efdSGlen Barber Tarball signatures can now be built by running 'make signatures'. 4726ba2b2efdSGlen Barber There are also new makefile rules 'tarballs', 'check_public', and 4727ba2b2efdSGlen Barber separate makefile rules for each tarball and signature file. 4728ba2b2efdSGlen Barber A few makefile rules are now more portable to strict POSIX. 4729ba2b2efdSGlen Barber 4730ba2b2efdSGlen Barber The main web page now lists the canonical IANA URL. 4731ba2b2efdSGlen Barber 4732ba2b2efdSGlen Barber 4733ba2b2efdSGlen BarberRelease 2012h - 2012-10-26 22:49:10 -0700 4734ba2b2efdSGlen Barber 4735ba2b2efdSGlen Barber Bahia no longer has DST. (Thanks to Kelley Cook.) 4736ba2b2efdSGlen Barber 4737ba2b2efdSGlen Barber Tocantins has DST. (Thanks to Rodrigo Severo.) 4738ba2b2efdSGlen Barber 4739ba2b2efdSGlen Barber Israel has new DST rules next year. (Thanks to Ephraim Silverberg.) 4740ba2b2efdSGlen Barber 4741ba2b2efdSGlen Barber Jordan stays on DST this winter. (Thanks to Steffen Thorsen.) 4742ba2b2efdSGlen Barber 4743ba2b2efdSGlen Barber Web page updates. 4744ba2b2efdSGlen Barber 4745ba2b2efdSGlen Barber More C modernization, except that at Arthur David Olson's suggestion 4746ba2b2efdSGlen Barber the instances of 'register' were kept. 4747ba2b2efdSGlen Barber 4748ba2b2efdSGlen Barber 4749ba2b2efdSGlen BarberRelease 2012g - 2012-10-17 20:59:45 -0700 4750ba2b2efdSGlen Barber 4751ba2b2efdSGlen Barber Samoa fall 2012 and later. (Thanks to Nicholas Pereira and Robert Elz.) 4752ba2b2efdSGlen Barber 4753ba2b2efdSGlen Barber Palestine fall 2012. (Thanks to Steffen Thorsen.) 4754ba2b2efdSGlen Barber 4755ba2b2efdSGlen Barber Assume C89. 4756ba2b2efdSGlen Barber 4757ba2b2efdSGlen Barber To attack the version-number problem, this release ships the file 4758ba2b2efdSGlen Barber 'Makefile' (which contains the release number) in both the tzcode and 4759ba2b2efdSGlen Barber the tzdata tarballs. The two Makefiles are identical, and should be 4760ba2b2efdSGlen Barber identical in any matching pair of tarballs, so it shouldn't matter 4761ba2b2efdSGlen Barber which order you extract the tarballs. Perhaps we can come up with a 4762ba2b2efdSGlen Barber better version-number scheme at some point; this scheme does have the 4763ba2b2efdSGlen Barber virtue of not adding more files. 4764ba2b2efdSGlen Barber 4765ba2b2efdSGlen Barber 4766ba2b2efdSGlen BarberRelease 2012f - 2012-09-12 23:17:03 -0700 4767ba2b2efdSGlen Barber 4768ba2b2efdSGlen Barber * australasia (Pacific/Fiji): Fiji DST is October 21 through January 4769ba2b2efdSGlen Barber 20 this year. (Thanks to Steffen Thorsen.) 4770ba2b2efdSGlen Barber 4771ba2b2efdSGlen Barber 4772ba2b2efdSGlen BarberRelease 2012e - 2012-08-02 20:44:55 -0700 4773ba2b2efdSGlen Barber 4774ba2b2efdSGlen Barber * australasia (Pacific/Fakaofo): Tokelau is UT +13, not +14. 4775ba2b2efdSGlen Barber (Thanks to Steffen Thorsen.) 4776ba2b2efdSGlen Barber 4777ba2b2efdSGlen Barber * Use a single version number for both code and data. 4778ba2b2efdSGlen Barber 4779ba2b2efdSGlen Barber * .gitignore: New file. 4780ba2b2efdSGlen Barber 4781ba2b2efdSGlen Barber * Remove trailing white space. 4782ba2b2efdSGlen Barber 4783ba2b2efdSGlen Barber 4784ba2b2efdSGlen BarberRelease code2012c-data2012d - 2012-07-19 16:35:33 -0700 4785ba2b2efdSGlen Barber 4786ba2b2efdSGlen Barber Changes for Morocco's timestamps, which take effect in a couple of 4787ba2b2efdSGlen Barber hours, along with infrastructure changes to accommodate how the tz 4788ba2b2efdSGlen Barber code and data are released on IANA. 4789ba2b2efdSGlen Barber 4790ba2b2efdSGlen Barber 4791ba2b2efdSGlen BarberRelease data2012c - 2012-03-27 12:17:25 -0400 4792ba2b2efdSGlen Barber 4793ba2b2efdSGlen Barber africa 4794ba2b2efdSGlen Barber Summer time changes for Morocco (to start late April 2012) 4795ba2b2efdSGlen Barber 4796ba2b2efdSGlen Barber asia 4797ba2b2efdSGlen Barber Changes for 2012 for Gaza & the West Bank (Hebron) and Syria 4798ba2b2efdSGlen Barber 4799ba2b2efdSGlen Barber northamerica 4800ba2b2efdSGlen Barber Haiti following US/Canada rules for 2012 (and we're assuming, 4801ba2b2efdSGlen Barber for now anyway, for the future). 4802ba2b2efdSGlen Barber 4803ba2b2efdSGlen Barber 4804ba2b2efdSGlen BarberRelease 2012b - 2012-03-02 12:29:15 +0700 4805ba2b2efdSGlen Barber 4806ba2b2efdSGlen Barber There is just one change to tzcode2012b (compared with 2012a): 4807ba2b2efdSGlen Barber the Makefile that was accidentally included with 2012a has been 4808ba2b2efdSGlen Barber replaced with the version that should have been there, which is 4809ba2b2efdSGlen Barber identical with the previous version (from tzcode2011i). 4810ba2b2efdSGlen Barber 4811ba2b2efdSGlen Barber There are just two changes in tzdata2012b compared with 2012a. 4812ba2b2efdSGlen Barber 4813ba2b2efdSGlen Barber Most significantly, summer time in Cuba has been delayed 3 weeks 4814ba2b2efdSGlen Barber (now starts April 1 rather than March 11). Since Mar 11 (the old start 4815ba2b2efdSGlen Barber date, as listed in 2012a) is just a little over a week away, this 4816ba2b2efdSGlen Barber change is urgent. 4817ba2b2efdSGlen Barber 4818ba2b2efdSGlen Barber Less importantly, an excess tab in one of the changes in zone.tab 4819ba2b2efdSGlen Barber in 2012a has been removed. 4820ba2b2efdSGlen Barber 4821ba2b2efdSGlen Barber 4822ba2b2efdSGlen BarberRelease 2012a - 2012-03-01 18:28:10 +0700 4823ba2b2efdSGlen Barber 4824ba2b2efdSGlen Barber The changes in tzcode2012a (compared to the previous version, 2011i) 4825ba2b2efdSGlen Barber are entirely to the README and tz-art.htm and tz-link.htm files, if 4826ba2b2efdSGlen Barber none of those concern you, you can ignore the code update. The changes 4827ba2b2efdSGlen Barber reflect the changed addresses for the mailing list and the code and 4828ba2b2efdSGlen Barber data distribution points & methods (and a link to DateTime::TimeZone::Tzfile 4829ba2b2efdSGlen Barber has been added to tz-link.htm). 4830ba2b2efdSGlen Barber 4831ba2b2efdSGlen Barber In tzdata2012a (compared to the previous release, which was 2011n) 4832ba2b2efdSGlen Barber the major changes are: 4833ba2b2efdSGlen Barber Chile 2011/2012 and 2012/2013 summer time date adjustments. 4834ba2b2efdSGlen Barber Falkland Islands onto permanent summer time (we're assuming for the 4835ba2b2efdSGlen Barber foreseeable future, though 2012 is all we're fairly certain of.) 4836ba2b2efdSGlen Barber Armenia has abolished Summer Time. 4837ba2b2efdSGlen Barber Tokelau jumped the International Date Line back last December 4838ba2b2efdSGlen Barber (just the same as their near neighbour, Samoa). 4839ba2b2efdSGlen Barber America/Creston is a new zone for a small area of British Columbia 4840ba2b2efdSGlen Barber There will be a leapsecond 2012-06-30 23:59:60 UTC. 4841ba2b2efdSGlen Barber 4842ba2b2efdSGlen Barber Other minor changes are: 4843ba2b2efdSGlen Barber Corrections to 1918 Canadian summer time end dates. 4844ba2b2efdSGlen Barber Updated URL for UK time zone history (in comments) 4845ba2b2efdSGlen Barber A few typos in Le Corre's list of free French place names (comments) 4846ba2b2efdSGlen Barber 4847ba2b2efdSGlen Barber 4848ba2b2efdSGlen BarberRelease data2011n - 2011-10-30 14:57:54 +0700 4849ba2b2efdSGlen Barber 4850ba2b2efdSGlen Barber There are three changes of note - most urgently, Cuba (America/Havana) 4851ba2b2efdSGlen Barber has extended summer time by two weeks, now to end on Nov 13, rather than 4852ba2b2efdSGlen Barber the (already past) Oct 30. Second, the Pridnestrovian Moldavian Republic 4853ba2b2efdSGlen Barber (Europe/Tiraspol) decided not to split from the rest of Moldova after 4854ba2b2efdSGlen Barber all, and consequently that zone has been removed (again) and reinstated 4855ba2b2efdSGlen Barber in the "backward" file as a link to Europe/Chisinau. And third, the 4856ba2b2efdSGlen Barber end date for Fiji's summer time this summer was moved forward from the 4857ba2b2efdSGlen Barber earlier planned Feb 26, to Jan 22. 4858ba2b2efdSGlen Barber 4859ba2b2efdSGlen Barber Apart from that, Moldova (MD) returns to a single entry in zone.tab 4860ba2b2efdSGlen Barber (and the incorrect syntax that was in the 2011m version of that file 4861ba2b2efdSGlen Barber is so fixed - it would have been fixed in a different way had this 4862ba2b2efdSGlen Barber change not happened - that's the "missing" sccs version id). 4863ba2b2efdSGlen Barber 4864ba2b2efdSGlen Barber 4865ba2b2efdSGlen BarberRelease data2011m - 2011-10-24 21:42:16 +0700 4866ba2b2efdSGlen Barber 4867ba2b2efdSGlen Barber In particular, the typos in comments in the data (2011-11-17 should have 4868ba2b2efdSGlen Barber been 2011-10-17 as Alan Barrett noted, and spelling of Tiraspol that 4869ba2b2efdSGlen Barber Tim Parenti noted) have been fixed, and the change for Ukraine has been 4870eebb9c2cSPhilip Paeps made in all 4 Ukrainian zones, rather than just Europe/Kiev 4871eebb9c2cSPhilip Paeps (again, thanks to Tim Parenti, and also Denys Gavrysh). 4872ba2b2efdSGlen Barber 4873ba2b2efdSGlen Barber In addition, I added Europe/Tiraspol to zone.tab. 4874ba2b2efdSGlen Barber 4875ba2b2efdSGlen Barber This time, all the files have new version numbers... (including the files 4876ba2b2efdSGlen Barber otherwise unchanged in 2011m that were changed in 2011l but didn't get new 4877ba2b2efdSGlen Barber version numbers there...) 4878ba2b2efdSGlen Barber 4879ba2b2efdSGlen Barber 4880ba2b2efdSGlen BarberRelease data2011l - 2011-10-10 11:15:43 +0700 4881ba2b2efdSGlen Barber 4882ba2b2efdSGlen Barber There are just 2 changes that cause different generated tzdata files from 4883ba2b2efdSGlen Barber zic, to Asia/Hebron and Pacific/Fiji - the possible change for Bahia, Brazil 4884ba2b2efdSGlen Barber is included, but commented out. Compared with the diff I sent out last week, 4885ba2b2efdSGlen Barber this version also includes attributions for the sources for the changes 4886ba2b2efdSGlen Barber (in much the same format as ado used, but the html tags have not been 4887ba2b2efdSGlen Barber checked, verified, or used in any way at all, so if there are errors there, 4888ba2b2efdSGlen Barber please let me know.) 4889ba2b2efdSGlen Barber 4890ba2b2efdSGlen Barber 4891ba2b2efdSGlen BarberRelease data2011k - 2011-09-20 17:54:03 -0400 4892ba2b2efdSGlen Barber 4893ba2b2efdSGlen Barber [not summarized] 4894ba2b2efdSGlen Barber 4895ba2b2efdSGlen Barber 4896ba2b2efdSGlen BarberRelease data2011j - 2011-09-12 09:22:49 -0400 4897ba2b2efdSGlen Barber 4898ba2b2efdSGlen Barber (contemporary changes for Samoa; past changes for Kenya, Uganda, and 4899ba2b2efdSGlen Barber Tanzania); there are also two spelling corrections to comments in 4900ba2b2efdSGlen Barber the australasia file (with thanks to Christos Zoulas). 4901ba2b2efdSGlen Barber 4902ba2b2efdSGlen Barber 4903ba2b2efdSGlen BarberRelease 2011i - 2011-08-29 05:56:32 -0400 4904ba2b2efdSGlen Barber 4905ba2b2efdSGlen Barber [not summarized] 4906ba2b2efdSGlen Barber 4907ba2b2efdSGlen Barber 4908ba2b2efdSGlen BarberRelease data2011h - 2011-06-15 18:41:48 -0400 4909ba2b2efdSGlen Barber 4910ba2b2efdSGlen Barber Russia and Curaçao changes 4911ba2b2efdSGlen Barber 4912ba2b2efdSGlen Barber 4913ba2b2efdSGlen BarberRelease 2011g - 2011-04-25 09:07:22 -0400 4914ba2b2efdSGlen Barber 4915ba2b2efdSGlen Barber update the rules for Egypt to reflect its abandonment of DST this year 4916ba2b2efdSGlen Barber 4917ba2b2efdSGlen Barber 4918ba2b2efdSGlen BarberRelease 2011f - 2011-04-06 17:14:53 -0400 4919ba2b2efdSGlen Barber 4920ba2b2efdSGlen Barber [not summarized] 4921ba2b2efdSGlen Barber 4922ba2b2efdSGlen Barber 4923ba2b2efdSGlen BarberRelease 2011e - 2011-03-31 16:04:38 -0400 4924ba2b2efdSGlen Barber 4925ba2b2efdSGlen Barber Morocco, Chile, and tz-link changes 4926ba2b2efdSGlen Barber 4927ba2b2efdSGlen Barber 4928ba2b2efdSGlen BarberRelease 2011d - 2011-03-14 09:18:01 -0400 4929ba2b2efdSGlen Barber 4930ba2b2efdSGlen Barber changes that impact present-day timestamps in Cuba, Samoa, and Turkey 4931ba2b2efdSGlen Barber 4932ba2b2efdSGlen Barber 4933ba2b2efdSGlen BarberRelease 2011c - 2011-03-07 09:30:09 -0500 4934ba2b2efdSGlen Barber 4935ba2b2efdSGlen Barber These do affect current timestamps in Chile and Annette Island, Canada. 4936ba2b2efdSGlen Barber 4937ba2b2efdSGlen Barber 4938ba2b2efdSGlen BarberRelease 2011b - 2011-02-07 08:44:50 -0500 4939ba2b2efdSGlen Barber 4940ba2b2efdSGlen Barber [not summarized] 4941ba2b2efdSGlen Barber 4942ba2b2efdSGlen Barber 4943ba2b2efdSGlen BarberRelease 2011a - 2011-01-24 10:30:16 -0500 4944ba2b2efdSGlen Barber 4945ba2b2efdSGlen Barber [not summarized] 4946ba2b2efdSGlen Barber 4947ba2b2efdSGlen Barber 4948ba2b2efdSGlen BarberRelease data2010o - 2010-11-01 09:18:23 -0400 4949ba2b2efdSGlen Barber 4950ba2b2efdSGlen Barber change to the end of DST in Fiji in 2011 4951ba2b2efdSGlen Barber 4952ba2b2efdSGlen Barber 4953ba2b2efdSGlen BarberRelease 2010n - 2010-10-25 08:19:17 -0400 4954ba2b2efdSGlen Barber 4955ba2b2efdSGlen Barber [not summarized] 4956ba2b2efdSGlen Barber 4957ba2b2efdSGlen Barber 4958ba2b2efdSGlen BarberRelease 2010m - 2010-09-27 09:24:48 -0400 4959ba2b2efdSGlen Barber 4960ba2b2efdSGlen Barber Hong Kong, Vostok, and zic.c changes 4961ba2b2efdSGlen Barber 4962ba2b2efdSGlen Barber 4963ba2b2efdSGlen BarberRelease 2010l - 2010-08-16 06:57:25 -0400 4964ba2b2efdSGlen Barber 4965ba2b2efdSGlen Barber [not summarized] 4966ba2b2efdSGlen Barber 4967ba2b2efdSGlen Barber 4968ba2b2efdSGlen BarberRelease 2010k - 2010-07-26 10:42:27 -0400 4969ba2b2efdSGlen Barber 4970ba2b2efdSGlen Barber [not summarized] 4971ba2b2efdSGlen Barber 4972ba2b2efdSGlen Barber 4973ba2b2efdSGlen BarberRelease 2010j - 2010-05-10 09:07:48 -0400 4974ba2b2efdSGlen Barber 4975ba2b2efdSGlen Barber changes for Bahía de Banderas and for version naming 4976ba2b2efdSGlen Barber 4977ba2b2efdSGlen Barber 4978ba2b2efdSGlen BarberRelease data2010i - 2010-04-16 18:50:45 -0400 4979ba2b2efdSGlen Barber 4980ba2b2efdSGlen Barber the end of DST in Morocco on 2010-08-08 4981ba2b2efdSGlen Barber 4982ba2b2efdSGlen Barber 4983ba2b2efdSGlen BarberRelease data2010h - 2010-04-05 09:58:56 -0400 4984ba2b2efdSGlen Barber 4985ba2b2efdSGlen Barber [not summarized] 4986ba2b2efdSGlen Barber 4987ba2b2efdSGlen Barber 4988ba2b2efdSGlen BarberRelease data2010g - 2010-03-24 11:14:53 -0400 4989ba2b2efdSGlen Barber 4990ba2b2efdSGlen Barber [not summarized] 4991ba2b2efdSGlen Barber 4992ba2b2efdSGlen Barber 4993ba2b2efdSGlen BarberRelease 2010f - 2010-03-22 09:45:46 -0400 4994ba2b2efdSGlen Barber 4995ba2b2efdSGlen Barber [not summarized] 4996ba2b2efdSGlen Barber 4997ba2b2efdSGlen Barber 4998ba2b2efdSGlen BarberRelease data2010e - 2010-03-08 14:24:27 -0500 4999ba2b2efdSGlen Barber 5000ba2b2efdSGlen Barber corrects the Dhaka bug found by Danvin Ruangchan 5001ba2b2efdSGlen Barber 5002ba2b2efdSGlen Barber 5003ba2b2efdSGlen BarberRelease data2010d - 2010-03-06 07:26:01 -0500 5004ba2b2efdSGlen Barber 5005ba2b2efdSGlen Barber [not summarized] 5006ba2b2efdSGlen Barber 5007ba2b2efdSGlen Barber 5008ba2b2efdSGlen BarberRelease 2010c - 2010-03-01 09:20:58 -0500 5009ba2b2efdSGlen Barber 5010ba2b2efdSGlen Barber changes including KRE's suggestion for earlier initialization of 5011ba2b2efdSGlen Barber "goahead" and "goback" structure elements 5012ba2b2efdSGlen Barber 5013ba2b2efdSGlen Barber 5014ba2b2efdSGlen BarberRelease code2010a - 2010-02-16 10:40:04 -0500 5015ba2b2efdSGlen Barber 5016ba2b2efdSGlen Barber [not summarized] 5017ba2b2efdSGlen Barber 5018ba2b2efdSGlen Barber 5019ba2b2efdSGlen BarberRelease data2010b - 2010-01-20 12:37:01 -0500 5020ba2b2efdSGlen Barber 5021ba2b2efdSGlen Barber Mexico changes 5022ba2b2efdSGlen Barber 5023ba2b2efdSGlen Barber 5024ba2b2efdSGlen BarberRelease data2010a - 2010-01-18 08:30:04 -0500 5025ba2b2efdSGlen Barber 5026ba2b2efdSGlen Barber changes to Dhaka 5027ba2b2efdSGlen Barber 5028ba2b2efdSGlen Barber 5029ba2b2efdSGlen BarberRelease data2009u - 2009-12-26 08:32:28 -0500 5030ba2b2efdSGlen Barber 5031ba2b2efdSGlen Barber changes to DST in Bangladesh 5032ba2b2efdSGlen Barber 5033ba2b2efdSGlen Barber 5034ba2b2efdSGlen BarberRelease 2009t - 2009-12-21 13:24:27 -0500 5035ba2b2efdSGlen Barber 5036ba2b2efdSGlen Barber [not summarized] 5037ba2b2efdSGlen Barber 5038ba2b2efdSGlen Barber 5039ba2b2efdSGlen BarberRelease data2009s - 2009-11-14 10:26:32 -0500 5040ba2b2efdSGlen Barber 5041ba2b2efdSGlen Barber (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change 5042ba2b2efdSGlen Barber 5043ba2b2efdSGlen Barber 5044ba2b2efdSGlen BarberRelease 2009r - 2009-11-09 10:10:31 -0500 5045ba2b2efdSGlen Barber 5046ba2b2efdSGlen Barber "antarctica" and "tz-link.htm" changes 5047ba2b2efdSGlen Barber 5048ba2b2efdSGlen Barber 5049ba2b2efdSGlen BarberRelease 2009q - 2009-11-02 09:12:40 -0500 5050ba2b2efdSGlen Barber 5051ba2b2efdSGlen Barber with two corrections as reported by Eric Muller and Philip Newton 5052ba2b2efdSGlen Barber 5053ba2b2efdSGlen Barber 5054ba2b2efdSGlen BarberRelease data2009p - 2009-10-23 15:05:27 -0400 5055ba2b2efdSGlen Barber 5056ba2b2efdSGlen Barber Argentina (including San Luis) changes (with the correction from 5057ba2b2efdSGlen Barber Mariano Absatz) 5058ba2b2efdSGlen Barber 5059ba2b2efdSGlen Barber 5060ba2b2efdSGlen BarberRelease data2009o - 2009-10-14 16:49:38 -0400 5061ba2b2efdSGlen Barber 5062ba2b2efdSGlen Barber Samoa (commentary only), Pakistan, and Bangladesh changes 5063ba2b2efdSGlen Barber 5064ba2b2efdSGlen Barber 5065ba2b2efdSGlen BarberRelease data2009n - 2009-09-22 15:13:38 -0400 5066ba2b2efdSGlen Barber 5067ba2b2efdSGlen Barber added commentary for Argentina and a change to the end of DST in 5068ba2b2efdSGlen Barber 2009 in Pakistan 5069ba2b2efdSGlen Barber 5070ba2b2efdSGlen Barber 5071ba2b2efdSGlen BarberRelease data2009m - 2009-09-03 10:23:43 -0400 5072ba2b2efdSGlen Barber 5073ba2b2efdSGlen Barber Samoa and Palestine changes 5074ba2b2efdSGlen Barber 5075ba2b2efdSGlen Barber 5076ba2b2efdSGlen BarberRelease data2009l - 2009-08-14 09:13:07 -0400 5077ba2b2efdSGlen Barber 5078ba2b2efdSGlen Barber Samoa (comments only) and Egypt 5079ba2b2efdSGlen Barber 5080ba2b2efdSGlen Barber 5081ba2b2efdSGlen BarberRelease 2009k - 2009-07-20 09:46:08 -0400 5082ba2b2efdSGlen Barber 5083ba2b2efdSGlen Barber [not summarized] 5084ba2b2efdSGlen Barber 5085ba2b2efdSGlen Barber 5086ba2b2efdSGlen BarberRelease data2009j - 2009-06-15 06:43:59 -0400 5087ba2b2efdSGlen Barber 5088ba2b2efdSGlen Barber Bangladesh change (with a short turnaround since the DST change is 5089ba2b2efdSGlen Barber impending) 5090ba2b2efdSGlen Barber 5091ba2b2efdSGlen Barber 5092ba2b2efdSGlen BarberRelease 2009i - 2009-06-08 09:21:22 -0400 5093ba2b2efdSGlen Barber 5094ba2b2efdSGlen Barber updating for DST in Bangladesh this year 5095ba2b2efdSGlen Barber 5096ba2b2efdSGlen Barber 5097ba2b2efdSGlen BarberRelease 2009h - 2009-05-26 09:19:14 -0400 5098ba2b2efdSGlen Barber 5099ba2b2efdSGlen Barber [not summarized] 5100ba2b2efdSGlen Barber 5101ba2b2efdSGlen Barber 5102ba2b2efdSGlen BarberRelease data2009g - 2009-04-20 16:34:07 -0400 5103ba2b2efdSGlen Barber 5104ba2b2efdSGlen Barber Cairo 5105ba2b2efdSGlen Barber 5106ba2b2efdSGlen Barber 5107ba2b2efdSGlen BarberRelease data2009f - 2009-04-10 11:00:52 -0400 5108ba2b2efdSGlen Barber 5109ba2b2efdSGlen Barber correct DST in Pakistan 5110ba2b2efdSGlen Barber 5111ba2b2efdSGlen Barber 5112ba2b2efdSGlen BarberRelease 2009e - 2009-04-06 09:08:11 -0400 5113ba2b2efdSGlen Barber 5114ba2b2efdSGlen Barber [not summarized] 5115ba2b2efdSGlen Barber 5116ba2b2efdSGlen Barber 5117ba2b2efdSGlen BarberRelease 2009d - 2009-03-23 09:38:12 -0400 5118ba2b2efdSGlen Barber 5119ba2b2efdSGlen Barber Morocco, Tunisia, Argentina, and American Astronomical Society changes 5120ba2b2efdSGlen Barber 5121ba2b2efdSGlen Barber 5122ba2b2efdSGlen BarberRelease data2009c - 2009-03-16 09:47:51 -0400 5123ba2b2efdSGlen Barber 5124ba2b2efdSGlen Barber change to the start of Cuban DST 5125ba2b2efdSGlen Barber 5126ba2b2efdSGlen Barber 5127ba2b2efdSGlen BarberRelease 2009b - 2009-02-09 11:15:22 -0500 5128ba2b2efdSGlen Barber 5129ba2b2efdSGlen Barber [not summarized] 5130ba2b2efdSGlen Barber 5131ba2b2efdSGlen Barber 5132ba2b2efdSGlen BarberRelease 2009a - 2009-01-21 10:09:39 -0500 5133ba2b2efdSGlen Barber 5134ba2b2efdSGlen Barber [not summarized] 5135ba2b2efdSGlen Barber 5136ba2b2efdSGlen Barber 5137ba2b2efdSGlen BarberRelease data2008i - 2008-10-21 12:10:25 -0400 5138ba2b2efdSGlen Barber 5139ba2b2efdSGlen Barber southamerica and zone.tab files, with Argentina DST rule changes and 5140ba2b2efdSGlen Barber United States zone reordering and recommenting 5141ba2b2efdSGlen Barber 5142ba2b2efdSGlen Barber 5143ba2b2efdSGlen BarberRelease 2008h - 2008-10-13 07:33:56 -0400 5144ba2b2efdSGlen Barber 5145ba2b2efdSGlen Barber [not summarized] 5146ba2b2efdSGlen Barber 5147ba2b2efdSGlen Barber 5148ba2b2efdSGlen BarberRelease 2008g - 2008-10-06 09:03:18 -0400 5149ba2b2efdSGlen Barber 5150ba2b2efdSGlen Barber Fix a broken HTML anchor and update Brazil's DST transitions; 5151ba2b2efdSGlen Barber there's also a slight reordering of information in tz-art.htm. 5152ba2b2efdSGlen Barber 5153ba2b2efdSGlen Barber 5154ba2b2efdSGlen BarberRelease data2008f - 2008-09-09 22:33:26 -0400 5155ba2b2efdSGlen Barber 5156ba2b2efdSGlen Barber [not summarized] 5157ba2b2efdSGlen Barber 5158ba2b2efdSGlen Barber 5159ba2b2efdSGlen BarberRelease 2008e - 2008-07-28 14:11:17 -0400 5160ba2b2efdSGlen Barber 5161ba2b2efdSGlen Barber changes by Arthur David Olson and Jesper Nørgaard Welen 5162ba2b2efdSGlen Barber 5163ba2b2efdSGlen Barber 5164ba2b2efdSGlen BarberRelease data2008d - 2008-07-07 09:51:38 -0400 5165ba2b2efdSGlen Barber 5166ba2b2efdSGlen Barber changes by Arthur David Olson, Paul Eggert, and Rodrigo Severo 5167ba2b2efdSGlen Barber 5168ba2b2efdSGlen Barber 5169ba2b2efdSGlen BarberRelease data2008c - 2008-05-19 17:48:03 -0400 5170ba2b2efdSGlen Barber 5171ba2b2efdSGlen Barber Pakistan, Morocco, and Mongolia 5172ba2b2efdSGlen Barber 5173ba2b2efdSGlen Barber 5174ba2b2efdSGlen BarberRelease data2008b - 2008-03-24 08:30:59 -0400 5175ba2b2efdSGlen Barber 5176ba2b2efdSGlen Barber including renaming Asia/Calcutta to Asia/Kolkata, with a backward 5177ba2b2efdSGlen Barber link provided 5178ba2b2efdSGlen Barber 5179ba2b2efdSGlen Barber 5180ba2b2efdSGlen BarberRelease 2008a - 2008-03-08 05:42:16 -0500 5181ba2b2efdSGlen Barber 5182ba2b2efdSGlen Barber [not summarized] 5183ba2b2efdSGlen Barber 5184ba2b2efdSGlen Barber 5185ba2b2efdSGlen BarberRelease 2007k - 2007-12-31 10:25:22 -0500 5186ba2b2efdSGlen Barber 5187ba2b2efdSGlen Barber most importantly, changes to the "southamerica" file based on 5188ba2b2efdSGlen Barber Argentina's readoption of daylight saving time 5189ba2b2efdSGlen Barber 5190ba2b2efdSGlen Barber 5191ba2b2efdSGlen BarberRelease 2007j - 2007-12-03 09:51:01 -0500 5192ba2b2efdSGlen Barber 5193ba2b2efdSGlen Barber 1. eliminate the "P" (parameter) macro; 5194ba2b2efdSGlen Barber 5195ba2b2efdSGlen Barber 2. the "noncontroversial" changes circulated on the time zone 5196ba2b2efdSGlen Barber mailing list (less the changes to "logwtmp.c"); 5197ba2b2efdSGlen Barber 5198ba2b2efdSGlen Barber 3. eliminate "too many transition" errors when "min" is used in time 5199ba2b2efdSGlen Barber zone rules; 5200ba2b2efdSGlen Barber 5201ba2b2efdSGlen Barber 4. changes by Paul Eggert (including updated information for Venezuela). 5202ba2b2efdSGlen Barber 5203ba2b2efdSGlen Barber 5204ba2b2efdSGlen BarberRelease data2007i - 2007-10-30 10:28:11 -0400 5205ba2b2efdSGlen Barber 5206ba2b2efdSGlen Barber changes for Cuba and Syria 5207ba2b2efdSGlen Barber 5208ba2b2efdSGlen Barber 5209ba2b2efdSGlen BarberRelease 2007h - 2007-10-01 10:05:51 -0400 5210ba2b2efdSGlen Barber 5211ba2b2efdSGlen Barber changes by Paul Eggert, as well as an updated link to the ICU 5212ba2b2efdSGlen Barber project in tz-link.htm 5213ba2b2efdSGlen Barber 5214ba2b2efdSGlen Barber 5215ba2b2efdSGlen BarberRelease 2007g - 2007-08-20 10:47:59 -0400 5216ba2b2efdSGlen Barber 5217ba2b2efdSGlen Barber changes by Paul Eggert 5218ba2b2efdSGlen Barber 5219ba2b2efdSGlen Barber The "leapseconds" file has been updated to incorporate the most 5220ba2b2efdSGlen Barber recent International Earth Rotation and Reference Systems Service 5221ba2b2efdSGlen Barber (IERS) bulletin. 5222ba2b2efdSGlen Barber 5223ba2b2efdSGlen Barber There's an addition to tz-art.htm regarding the television show "Medium". 5224ba2b2efdSGlen Barber 5225ba2b2efdSGlen Barber 5226ba2b2efdSGlen BarberRelease 2007f - 2007-05-07 10:46:46 -0400 5227ba2b2efdSGlen Barber 5228ba2b2efdSGlen Barber changes by Paul Eggert (including Haiti, Turks and Caicos, and New 5229ba2b2efdSGlen Barber Zealand) 5230ba2b2efdSGlen Barber 5231ba2b2efdSGlen Barber changes to zic.c to allow hour values greater than 24 (along with 5232ba2b2efdSGlen Barber Paul's improved time value overflow checking) 5233ba2b2efdSGlen Barber 5234ba2b2efdSGlen Barber 5235ba2b2efdSGlen BarberRelease 2007e - 2007-04-02 10:11:52 -0400 5236ba2b2efdSGlen Barber 5237ba2b2efdSGlen Barber Syria and Honduras changes by Paul Eggert 5238ba2b2efdSGlen Barber 5239ba2b2efdSGlen Barber zic.c variable renaming changes by Arthur David Olson 5240ba2b2efdSGlen Barber 5241ba2b2efdSGlen Barber 5242ba2b2efdSGlen BarberRelease 2007d - 2007-03-20 08:48:30 -0400 5243ba2b2efdSGlen Barber 5244ba2b2efdSGlen Barber changes by Paul Eggert 5245ba2b2efdSGlen Barber 5246ba2b2efdSGlen Barber the elimination of white space at the ends of lines 5247ba2b2efdSGlen Barber 5248ba2b2efdSGlen Barber 5249ba2b2efdSGlen BarberRelease 2007c - 2007-02-26 09:09:37 -0500 5250ba2b2efdSGlen Barber 5251ba2b2efdSGlen Barber changes by Paul Eggert 5252ba2b2efdSGlen Barber 5253ba2b2efdSGlen Barber 5254ba2b2efdSGlen BarberRelease 2007b - 2007-02-12 09:34:20 -0500 5255ba2b2efdSGlen Barber 5256ba2b2efdSGlen Barber Paul Eggert's proposed change to the quotation handling logic in zic.c. 5257ba2b2efdSGlen Barber 5258ba2b2efdSGlen Barber changes to the commentary in "leapseconds" reflecting the IERS 5259ba2b2efdSGlen Barber announcement that there is to be no positive leap second at the end 5260ba2b2efdSGlen Barber of June 2007. 5261ba2b2efdSGlen Barber 5262ba2b2efdSGlen Barber 5263ba2b2efdSGlen BarberRelease 2007a - 2007-01-08 12:28:29 -0500 5264ba2b2efdSGlen Barber 5265ba2b2efdSGlen Barber changes by Paul Eggert 5266ba2b2efdSGlen Barber 52679f9fc6bbSPhilip Paeps Derick Rethans's Asmara change 5268ba2b2efdSGlen Barber 5269ba2b2efdSGlen Barber Oscar van Vlijmen's Easter Island local mean time change 5270ba2b2efdSGlen Barber 5271ba2b2efdSGlen Barber symbolic link changes 5272ba2b2efdSGlen Barber 5273ba2b2efdSGlen Barber 5274ba2b2efdSGlen BarberRelease 2006p - 2006-11-27 08:54:27 -0500 5275ba2b2efdSGlen Barber 5276ba2b2efdSGlen Barber changes by Paul Eggert 5277ba2b2efdSGlen Barber 5278ba2b2efdSGlen Barber 5279ba2b2efdSGlen BarberRelease 2006o - 2006-11-06 09:18:07 -0500 5280ba2b2efdSGlen Barber 5281ba2b2efdSGlen Barber changes by Paul Eggert 5282ba2b2efdSGlen Barber 5283ba2b2efdSGlen Barber 5284ba2b2efdSGlen BarberRelease 2006n - 2006-10-10 11:32:06 -0400 5285ba2b2efdSGlen Barber 5286ba2b2efdSGlen Barber changes by Paul Eggert 5287ba2b2efdSGlen Barber 5288ba2b2efdSGlen Barber 5289ba2b2efdSGlen BarberRelease 2006m - 2006-10-02 15:32:35 -0400 5290ba2b2efdSGlen Barber 5291ba2b2efdSGlen Barber changes for Uruguay, Palestine, and Egypt by Paul Eggert 5292ba2b2efdSGlen Barber 5293ba2b2efdSGlen Barber (minimalist) changes to zic.8 to clarify "until" information 5294ba2b2efdSGlen Barber 5295ba2b2efdSGlen Barber 5296ba2b2efdSGlen BarberRelease data2006l - 2006-09-18 12:58:11 -0400 5297ba2b2efdSGlen Barber 5298ba2b2efdSGlen Barber Paul's best-effort work on this coming weekend's Egypt time change 5299ba2b2efdSGlen Barber 5300ba2b2efdSGlen Barber 5301ba2b2efdSGlen BarberRelease 2006k - 2006-08-28 12:19:09 -0400 5302ba2b2efdSGlen Barber 5303ba2b2efdSGlen Barber changes by Paul Eggert 5304ba2b2efdSGlen Barber 5305ba2b2efdSGlen Barber 5306ba2b2efdSGlen BarberRelease 2006j - 2006-08-21 09:56:32 -0400 5307ba2b2efdSGlen Barber 5308ba2b2efdSGlen Barber changes by Paul Eggert 5309ba2b2efdSGlen Barber 5310ba2b2efdSGlen Barber 5311ba2b2efdSGlen BarberRelease code2006i - 2006-08-07 12:30:55 -0400 5312ba2b2efdSGlen Barber 5313ba2b2efdSGlen Barber localtime.c fixes 5314ba2b2efdSGlen Barber 5315ba2b2efdSGlen Barber Ken Pizzini's conversion script 5316ba2b2efdSGlen Barber 5317ba2b2efdSGlen Barber 5318ba2b2efdSGlen BarberRelease code2006h - 2006-07-24 09:19:37 -0400 5319ba2b2efdSGlen Barber 5320ba2b2efdSGlen Barber adds public domain notices to four files 5321ba2b2efdSGlen Barber 5322ba2b2efdSGlen Barber includes a fix for transition times being off by a second 5323ba2b2efdSGlen Barber 5324ba2b2efdSGlen Barber adds a new recording to the "arts" file (information courtesy Colin Bowern) 5325ba2b2efdSGlen Barber 5326ba2b2efdSGlen Barber 5327ba2b2efdSGlen BarberRelease 2006g - 2006-05-08 17:18:09 -0400 5328ba2b2efdSGlen Barber 5329ba2b2efdSGlen Barber northamerica changes by Paul Eggert 5330ba2b2efdSGlen Barber 5331ba2b2efdSGlen Barber 5332ba2b2efdSGlen BarberRelease 2006f - 2006-05-01 11:46:00 -0400 5333ba2b2efdSGlen Barber 5334ba2b2efdSGlen Barber a missing version number problem is fixed (with thanks to Bradley 5335ba2b2efdSGlen Barber White for catching the problem) 5336ba2b2efdSGlen Barber 5337ba2b2efdSGlen Barber 5338ba2b2efdSGlen BarberRelease 2006d - 2006-04-17 14:33:43 -0400 5339ba2b2efdSGlen Barber 5340ba2b2efdSGlen Barber changes by Paul Eggert 5341ba2b2efdSGlen Barber 5342ba2b2efdSGlen Barber added new items to tz-arts.htm that were found by Paul 5343ba2b2efdSGlen Barber 5344ba2b2efdSGlen Barber 5345ba2b2efdSGlen BarberRelease 2006c - 2006-04-03 10:09:32 -0400 5346ba2b2efdSGlen Barber 5347ba2b2efdSGlen Barber two sets of data changes by Paul Eggert 5348ba2b2efdSGlen Barber 5349ba2b2efdSGlen Barber a fencepost error fix in zic.c 5350ba2b2efdSGlen Barber 5351ba2b2efdSGlen Barber changes to zic.c and the "europe" file to minimize differences 5352ba2b2efdSGlen Barber between output produced by the old 32-bit zic and the new 64-bit 5353ba2b2efdSGlen Barber version 5354ba2b2efdSGlen Barber 5355ba2b2efdSGlen Barber 5356ba2b2efdSGlen BarberRelease 2006b - 2006-02-20 10:08:18 -0500 5357ba2b2efdSGlen Barber [tz32code2006b + tz64code2006b + tzdata2006b] 5358ba2b2efdSGlen Barber 5359ba2b2efdSGlen Barber 64-bit code 5360ba2b2efdSGlen Barber 5361ba2b2efdSGlen Barber All SCCS IDs were bumped to "8.1" for this release. 5362ba2b2efdSGlen Barber 5363ba2b2efdSGlen Barber 5364ba2b2efdSGlen BarberRelease 2006a - 2006-01-30 08:59:31 -0500 5365ba2b2efdSGlen Barber 5366ba2b2efdSGlen Barber changes by Paul Eggert (in particular, Indiana time zone moves) 5367ba2b2efdSGlen Barber 5368ba2b2efdSGlen Barber an addition to the zic manual page to describe how special-case 5369ba2b2efdSGlen Barber transitions are handled 5370ba2b2efdSGlen Barber 5371ba2b2efdSGlen Barber 5372ba2b2efdSGlen BarberRelease 2005r - 2005-12-27 09:27:13 -0500 5373ba2b2efdSGlen Barber 5374ba2b2efdSGlen Barber Canadian changes by Paul Eggert 5375ba2b2efdSGlen Barber 5376ba2b2efdSGlen Barber They also add "<pre>" directives to time zone data files and reflect 5377ba2b2efdSGlen Barber changes to warning message logic in "zdump.c" (but with calls to 5378ba2b2efdSGlen Barber "gettext" kept unbundled at the suggestion of Ken Pizzini). 5379ba2b2efdSGlen Barber 5380ba2b2efdSGlen Barber 5381ba2b2efdSGlen BarberRelease 2005q - 2005-12-13 09:17:09 -0500 5382ba2b2efdSGlen Barber 5383ba2b2efdSGlen Barber Nothing earth-shaking here: 5384ba2b2efdSGlen Barber 1. Electronic mail addresses have been removed. 5385ba2b2efdSGlen Barber 2. Casts of the return value of exit have been removed. 5386ba2b2efdSGlen Barber 3. Casts of the argument of is.* macros have been added. 5387ba2b2efdSGlen Barber 4. Indentation in one section of zic.c has been fixed. 5388ba2b2efdSGlen Barber 5. References to dead URLs in the data files have been dealt with. 5389ba2b2efdSGlen Barber 5390ba2b2efdSGlen Barber 5391ba2b2efdSGlen BarberRelease 2005p - 2005-12-05 10:30:53 -0500 5392ba2b2efdSGlen Barber 5393ba2b2efdSGlen Barber "systemv", "tz-link.htm", and "zdump.c" changes 5394ba2b2efdSGlen Barber (less the casts of arguments to the is* macros) 5395ba2b2efdSGlen Barber 5396ba2b2efdSGlen Barber 5397ba2b2efdSGlen BarberRelease 2005o - 2005-11-28 10:55:26 -0500 5398ba2b2efdSGlen Barber 5399ba2b2efdSGlen Barber Georgia, Cuba, Nicaragua, and Jordan changes by Paul Eggert 5400ba2b2efdSGlen Barber 5401ba2b2efdSGlen Barber zdump.c lint fixes by Arthur David Olson 5402ba2b2efdSGlen Barber 5403ba2b2efdSGlen Barber 5404ba2b2efdSGlen BarberRelease 2005n - 2005-10-03 09:44:09 -0400 5405ba2b2efdSGlen Barber 5406ba2b2efdSGlen Barber changes by Paul Eggert (both the Uruguay changes and the Kyrgyzstan 5407ba2b2efdSGlen Barber et al. changes) 5408ba2b2efdSGlen Barber 5409ba2b2efdSGlen Barber 5410ba2b2efdSGlen BarberRelease 2005m - 2005-08-29 12:15:40 -0400 5411ba2b2efdSGlen Barber 5412ba2b2efdSGlen Barber changes by Paul Eggert (with a small tweak to the tz-art change) 5413ba2b2efdSGlen Barber 5414ba2b2efdSGlen Barber a declaration of an unused variable has been removed from zdump.c 5415ba2b2efdSGlen Barber 5416ba2b2efdSGlen Barber 5417ba2b2efdSGlen BarberRelease 2005l - 2005-08-22 12:06:39 -0400 5418ba2b2efdSGlen Barber 5419ba2b2efdSGlen Barber changes by Paul Eggert 5420ba2b2efdSGlen Barber 5421ba2b2efdSGlen Barber overflow/underflow checks by Arthur David Olson, minus changes to 5422ba2b2efdSGlen Barber the "Theory" file about the pending addition of 64-bit data (I grow 5423ba2b2efdSGlen Barber less confident of the changes being accepted with each passing day, 5424ba2b2efdSGlen Barber and the changes no longer increase the data files nine-fold--there's 5425ba2b2efdSGlen Barber less than a doubling in size by my local Sun's reckoning) 5426ba2b2efdSGlen Barber 5427ba2b2efdSGlen Barber 5428ba2b2efdSGlen BarberRelease 2005k - 2005-07-14 14:14:24 -0400 5429ba2b2efdSGlen Barber 5430ba2b2efdSGlen Barber The "leapseconds" file has been edited to reflect the recently 5431ba2b2efdSGlen Barber announced leap second at the end of 2005. 5432ba2b2efdSGlen Barber 5433ba2b2efdSGlen Barber I've also deleted electronic mail addresses from the files as an 5434ba2b2efdSGlen Barber anti-spam measure. 5435ba2b2efdSGlen Barber 5436ba2b2efdSGlen Barber 5437ba2b2efdSGlen BarberRelease 2005j - 2005-06-13 14:34:13 -0400 5438ba2b2efdSGlen Barber 5439ba2b2efdSGlen Barber These reflect changes to limit the length of time zone abbreviations 5440ba2b2efdSGlen Barber and the characters used in those abbreviations. 5441ba2b2efdSGlen Barber 5442ba2b2efdSGlen Barber There are also changes to handle POSIX-style "quoted" timezone 5443ba2b2efdSGlen Barber environment variables. 5444ba2b2efdSGlen Barber 5445ba2b2efdSGlen Barber The changes were circulated on the time zone mailing list; the only 5446ba2b2efdSGlen Barber change since then was the removal of a couple of minimum-length of 5447ba2b2efdSGlen Barber abbreviation checks. 5448ba2b2efdSGlen Barber 5449ba2b2efdSGlen Barber 5450ba2b2efdSGlen BarberRelease data2005i - 2005-04-21 15:04:16 -0400 5451ba2b2efdSGlen Barber 5452ba2b2efdSGlen Barber changes (most importantly to Nicaragua and Haiti) by Paul Eggert 5453ba2b2efdSGlen Barber 5454ba2b2efdSGlen Barber 5455ba2b2efdSGlen BarberRelease 2005h - 2005-04-04 11:24:47 -0400 5456ba2b2efdSGlen Barber 5457ba2b2efdSGlen Barber changes by Paul Eggert 5458ba2b2efdSGlen Barber 5459ba2b2efdSGlen Barber minor changes to Makefile and zdump.c to produce more useful output 5460ba2b2efdSGlen Barber when doing a "make typecheck" 5461ba2b2efdSGlen Barber 5462ba2b2efdSGlen Barber 5463ba2b2efdSGlen BarberRelease 2005g - 2005-03-14 10:11:21 -0500 5464ba2b2efdSGlen Barber 5465ba2b2efdSGlen Barber changes by Paul Eggert (a change to current DST rules in Uruguay and 5466ba2b2efdSGlen Barber an update to a link to time zone software) 5467ba2b2efdSGlen Barber 5468ba2b2efdSGlen Barber 5469ba2b2efdSGlen BarberRelease 2005f - 2005-03-01 08:45:32 -0500 5470ba2b2efdSGlen Barber 5471ba2b2efdSGlen Barber data and documentation changes by Paul Eggert 5472ba2b2efdSGlen Barber 5473ba2b2efdSGlen Barber 5474ba2b2efdSGlen BarberRelease 2005e - 2005-02-10 15:59:44 -0500 5475ba2b2efdSGlen Barber 5476ba2b2efdSGlen Barber [not summarized] 5477ba2b2efdSGlen Barber 5478ba2b2efdSGlen Barber 5479ba2b2efdSGlen BarberRelease code2005d - 2005-01-31 09:21:47 -0500 5480ba2b2efdSGlen Barber 5481ba2b2efdSGlen Barber make zic complain about links to links if the -v flag is used 5482ba2b2efdSGlen Barber 5483ba2b2efdSGlen Barber have "make public" do more code checking 5484ba2b2efdSGlen Barber 5485ba2b2efdSGlen Barber add an include to "localtime.c" for the benefit of gcc systems 5486ba2b2efdSGlen Barber 5487ba2b2efdSGlen Barber 5488ba2b2efdSGlen BarberRelease 2005c - 2005-01-17 18:36:29 -0500 5489ba2b2efdSGlen Barber 5490ba2b2efdSGlen Barber get better results when mktime runs on a system where time_t is double 5491ba2b2efdSGlen Barber 5492ba2b2efdSGlen Barber changes to the data files (most importantly to Paraguay) 5493ba2b2efdSGlen Barber 5494ba2b2efdSGlen Barber 5495ba2b2efdSGlen BarberRelease 2005b - 2005-01-10 09:19:54 -0500 5496ba2b2efdSGlen Barber 5497ba2b2efdSGlen Barber Get localtime and gmtime working on systems with exotic time_t types. 5498ba2b2efdSGlen Barber 5499ba2b2efdSGlen Barber Update the leap second commentary in the "leapseconds" file. 5500ba2b2efdSGlen Barber 5501ba2b2efdSGlen Barber 5502ba2b2efdSGlen BarberRelease 2005a - 2005-01-01 13:13:44 -0500 5503ba2b2efdSGlen Barber 5504ba2b2efdSGlen Barber [not summarized] 5505ba2b2efdSGlen Barber 5506ba2b2efdSGlen Barber 5507ba2b2efdSGlen BarberRelease code2004i - 2004-12-14 13:42:58 -0500 5508ba2b2efdSGlen Barber 5509ba2b2efdSGlen Barber Deal with systems where time_t is unsigned. 5510ba2b2efdSGlen Barber 5511ba2b2efdSGlen Barber 5512ba2b2efdSGlen BarberRelease code2004h - 2004-12-07 11:40:18 -0500 5513ba2b2efdSGlen Barber 5514ba2b2efdSGlen Barber 64-bit-time_t changes 5515ba2b2efdSGlen Barber 5516ba2b2efdSGlen Barber 5517ba2b2efdSGlen BarberRelease 2004g - 2004-11-02 09:06:01 -0500 5518ba2b2efdSGlen Barber 5519ba2b2efdSGlen Barber update to Cuba (taking effect this weekend) 5520ba2b2efdSGlen Barber 5521ba2b2efdSGlen Barber other changes by Paul Eggert 5522ba2b2efdSGlen Barber 5523ba2b2efdSGlen Barber correction of the spelling of Oslo 5524ba2b2efdSGlen Barber 5525ba2b2efdSGlen Barber changed versions of difftime.c and private.h 5526ba2b2efdSGlen Barber 5527ba2b2efdSGlen Barber 5528ba2b2efdSGlen BarberRelease code2004f - 2004-10-21 10:25:22 -0400 5529ba2b2efdSGlen Barber 5530ba2b2efdSGlen Barber Cope with wide-ranging tm_year values. 5531ba2b2efdSGlen Barber 5532ba2b2efdSGlen Barber 5533ba2b2efdSGlen BarberRelease 2004e - 2004-10-11 14:47:21 -0400 5534ba2b2efdSGlen Barber 5535ba2b2efdSGlen Barber Brazil/Argentina/Israel changes by Paul Eggert 5536ba2b2efdSGlen Barber 5537ba2b2efdSGlen Barber changes to tz-link.htm by Paul 5538ba2b2efdSGlen Barber 5539ba2b2efdSGlen Barber one small fix to Makefile 5540ba2b2efdSGlen Barber 5541ba2b2efdSGlen Barber 5542ba2b2efdSGlen BarberRelease 2004d - 2004-09-22 08:27:29 -0400 5543ba2b2efdSGlen Barber 5544ba2b2efdSGlen Barber Avoid overflow problems when TM_YEAR_BASE is added to an integer. 5545ba2b2efdSGlen Barber 5546ba2b2efdSGlen Barber 5547ba2b2efdSGlen BarberRelease 2004c - 2004-08-11 12:06:26 -0400 5548ba2b2efdSGlen Barber 5549ba2b2efdSGlen Barber asctime-related changes 5550ba2b2efdSGlen Barber 5551ba2b2efdSGlen Barber (variants of) some of the documentation changes suggested by Paul Eggert 5552ba2b2efdSGlen Barber 5553ba2b2efdSGlen Barber 5554ba2b2efdSGlen BarberRelease 2004b - 2004-07-19 14:33:35 -0400 5555ba2b2efdSGlen Barber 5556ba2b2efdSGlen Barber data changes by Paul Eggert - most importantly, updates for Argentina 5557ba2b2efdSGlen Barber 5558ba2b2efdSGlen Barber 5559ba2b2efdSGlen BarberRelease 2004a - 2004-05-27 12:00:47 -0400 5560ba2b2efdSGlen Barber 5561ba2b2efdSGlen Barber changes by Paul Eggert 5562ba2b2efdSGlen Barber 5563ba2b2efdSGlen Barber Handle DST transitions that occur at the end of a month in some 5564ba2b2efdSGlen Barber years but at the start of the following month in other years. 5565ba2b2efdSGlen Barber 5566ba2b2efdSGlen Barber Add a copy of the correspondence that's the basis for claims about 5567ba2b2efdSGlen Barber DST in the Navajo Nation. 5568ba2b2efdSGlen Barber 5569ba2b2efdSGlen Barber 5570ba2b2efdSGlen BarberRelease 2003e - 2003-12-15 09:36:47 -0500 5571ba2b2efdSGlen Barber 5572ba2b2efdSGlen Barber changes by Arthur David Olson (primarily code changes) 5573ba2b2efdSGlen Barber 5574ba2b2efdSGlen Barber changes by Paul Eggert (primarily data changes) 5575ba2b2efdSGlen Barber 5576ba2b2efdSGlen Barber minor changes to "Makefile" and "northamerica" (in the latter case, 5577ba2b2efdSGlen Barber optimization of the "Toronto" rules) 5578ba2b2efdSGlen Barber 5579ba2b2efdSGlen Barber 5580ba2b2efdSGlen BarberRelease 2003d - 2003-10-06 09:34:44 -0400 5581ba2b2efdSGlen Barber 5582ba2b2efdSGlen Barber changes by Paul Eggert 5583ba2b2efdSGlen Barber 5584ba2b2efdSGlen Barber 5585ba2b2efdSGlen BarberRelease 2003c - 2003-09-16 10:47:05 -0400 5586ba2b2efdSGlen Barber 5587ba2b2efdSGlen Barber Fix bad returns in zic.c's inleap function. 5588ba2b2efdSGlen Barber Thanks to Bradley White for catching the problem! 5589ba2b2efdSGlen Barber 5590ba2b2efdSGlen Barber 5591ba2b2efdSGlen BarberRelease 2003b - 2003-09-16 07:13:44 -0400 5592ba2b2efdSGlen Barber 5593ba2b2efdSGlen Barber Add a "--version" option (and documentation) to the zic and zdump commands. 5594ba2b2efdSGlen Barber 5595ba2b2efdSGlen Barber changes to overflow/underflow checking in zic 5596ba2b2efdSGlen Barber 5597ba2b2efdSGlen Barber a localtime typo fix. 5598ba2b2efdSGlen Barber 5599ba2b2efdSGlen Barber Update the leapseconds and tz-art.htm files. 5600ba2b2efdSGlen Barber 5601ba2b2efdSGlen Barber 5602ba2b2efdSGlen BarberRelease 2003a - 2003-03-24 09:30:54 -0500 5603ba2b2efdSGlen Barber 5604ba2b2efdSGlen Barber changes by Paul Eggert 5605ba2b2efdSGlen Barber 5606ba2b2efdSGlen Barber a few additions and modifications to the tz-art.htm file 5607ba2b2efdSGlen Barber 5608ba2b2efdSGlen Barber 5609ba2b2efdSGlen BarberRelease 2002d - 2002-10-15 13:12:42 -0400 5610ba2b2efdSGlen Barber 5611ba2b2efdSGlen Barber changes by Paul Eggert, less the "Britain (UK)" change in iso3166.tab 5612ba2b2efdSGlen Barber 5613ba2b2efdSGlen Barber There's also a new time zone quote in "tz-art.htm". 5614ba2b2efdSGlen Barber 5615ba2b2efdSGlen Barber 5616ba2b2efdSGlen BarberRelease 2002c - 2002-04-04 11:55:20 -0500 5617ba2b2efdSGlen Barber 5618ba2b2efdSGlen Barber changes by Paul Eggert 5619ba2b2efdSGlen Barber 5620ba2b2efdSGlen Barber Change zic.c to avoid creating symlinks to files that don't exist. 5621ba2b2efdSGlen Barber 5622ba2b2efdSGlen Barber 5623ba2b2efdSGlen BarberRelease 2002b - 2002-01-28 12:56:03 -0500 5624ba2b2efdSGlen Barber 5625ba2b2efdSGlen Barber [These change notes are for Release 2002a, which was corrupted. 5626ba2b2efdSGlen Barber 2002b was a corrected version of 2002a.] 5627ba2b2efdSGlen Barber 5628ba2b2efdSGlen Barber changes by Paul Eggert 5629ba2b2efdSGlen Barber 5630ba2b2efdSGlen Barber Update the "leapseconds" file to note that there'll be no leap 5631ba2b2efdSGlen Barber second at the end of June, 2002. 5632ba2b2efdSGlen Barber 5633ba2b2efdSGlen Barber Change "zic.c" to deal with a problem in handling the "Asia/Bishkek" zone. 5634ba2b2efdSGlen Barber 5635ba2b2efdSGlen Barber Change to "difftime.c" to avoid sizeof problems. 5636ba2b2efdSGlen Barber 5637ba2b2efdSGlen Barber 5638ba2b2efdSGlen BarberRelease 2001d - 2001-10-09 13:31:32 -0400 5639ba2b2efdSGlen Barber 5640ba2b2efdSGlen Barber changes by Paul Eggert 5641ba2b2efdSGlen Barber 5642ba2b2efdSGlen Barber 5643ba2b2efdSGlen BarberRelease 2001c - 2001-06-05 13:59:55 -0400 5644ba2b2efdSGlen Barber 5645ba2b2efdSGlen Barber changes by Paul Eggert and Andrew Brown 5646ba2b2efdSGlen Barber 5647ba2b2efdSGlen Barber 5648ba2b2efdSGlen BarberRelease 2001b - 2001-04-05 16:44:38 -0400 5649ba2b2efdSGlen Barber 5650ba2b2efdSGlen Barber changes by Paul Eggert (modulo jnorgard's typo fix) 5651ba2b2efdSGlen Barber 5652ba2b2efdSGlen Barber tz-art.htm has been HTMLified. 5653ba2b2efdSGlen Barber 5654ba2b2efdSGlen Barber 5655ba2b2efdSGlen BarberRelease 2001a - 2001-03-13 12:57:44 -0500 5656ba2b2efdSGlen Barber 5657ba2b2efdSGlen Barber changes by Paul Eggert 5658ba2b2efdSGlen Barber 5659ba2b2efdSGlen Barber An addition to the "leapseconds" file: comments with the text of the 5660ba2b2efdSGlen Barber latest IERS leap second notice. 5661ba2b2efdSGlen Barber 5662ba2b2efdSGlen Barber Trailing white space has been removed from data file lines, and 5663ba2b2efdSGlen Barber repeated spaces in "Rule Jordan" lines in the "asia" file have been 5664ba2b2efdSGlen Barber converted to tabs. 5665ba2b2efdSGlen Barber 5666ba2b2efdSGlen Barber 5667ba2b2efdSGlen BarberRelease 2000h - 2000-12-14 15:33:38 -0500 5668ba2b2efdSGlen Barber 5669ba2b2efdSGlen Barber changes by Paul Eggert 5670ba2b2efdSGlen Barber 5671ba2b2efdSGlen Barber one typo fix in the "art" file 5672ba2b2efdSGlen Barber 5673ba2b2efdSGlen Barber With providence, this is the last update of the millennium. 5674ba2b2efdSGlen Barber 5675ba2b2efdSGlen Barber 5676ba2b2efdSGlen BarberRelease 2000g - 2000-10-10 11:35:22 -0400 5677ba2b2efdSGlen Barber 5678ba2b2efdSGlen Barber changes by Paul Eggert 5679ba2b2efdSGlen Barber 5680ba2b2efdSGlen Barber correction of John Mackin's name submitted by Robert Elz 5681ba2b2efdSGlen Barber 5682ba2b2efdSGlen Barber Garry Shandling's Daylight Saving Time joke (!?!) from the recent 5683ba2b2efdSGlen Barber Emmy Awards broadcast. 5684ba2b2efdSGlen Barber 5685ba2b2efdSGlen Barber 5686ba2b2efdSGlen BarberRelease 2000f - 2000-08-10 09:31:58 -0400 5687ba2b2efdSGlen Barber 5688ba2b2efdSGlen Barber changes by Paul Eggert 5689ba2b2efdSGlen Barber 5690ba2b2efdSGlen Barber Added information in "tz-art.htm" on a Seinfeld reference to DST. 5691ba2b2efdSGlen Barber 5692ba2b2efdSGlen Barber Error checking and messages in the "yearistype" script have been 5693ba2b2efdSGlen Barber improved. 5694ba2b2efdSGlen Barber 5695ba2b2efdSGlen Barber 5696ba2b2efdSGlen BarberRelease 2000e - 2000-07-31 09:27:54 -0400 5697ba2b2efdSGlen Barber 5698ba2b2efdSGlen Barber data changes by Paul Eggert 5699ba2b2efdSGlen Barber 5700ba2b2efdSGlen Barber a change to the default value of the defined constant HAVE_STRERROR 5701ba2b2efdSGlen Barber 5702ba2b2efdSGlen Barber the addition of a Dave Barry quote on DST to the tz-arts file 5703ba2b2efdSGlen Barber 5704ba2b2efdSGlen Barber 5705ba2b2efdSGlen BarberRelease 2000d - 2000-04-20 15:43:04 -0400 5706ba2b2efdSGlen Barber 5707ba2b2efdSGlen Barber changes to the documentation and code of strftime for C99 conformance 5708ba2b2efdSGlen Barber 5709ba2b2efdSGlen Barber a bug fix for date.c 5710ba2b2efdSGlen Barber 5711ba2b2efdSGlen Barber These are based on (though modified from) changes by Paul Eggert. 5712ba2b2efdSGlen Barber 5713ba2b2efdSGlen Barber 5714ba2b2efdSGlen BarberRelease 2000c - 2000-03-04 10:31:43 -0500 5715ba2b2efdSGlen Barber 5716ba2b2efdSGlen Barber changes by Paul Eggert 5717ba2b2efdSGlen Barber 5718ba2b2efdSGlen Barber 5719ba2b2efdSGlen BarberRelease 2000b - 2000-02-21 12:16:29 -0500 5720ba2b2efdSGlen Barber 5721ba2b2efdSGlen Barber changes by Paul Eggert and Joseph Myers 5722ba2b2efdSGlen Barber 5723ba2b2efdSGlen Barber modest tweaks to the tz-art.htm and tz-link.htm files 5724ba2b2efdSGlen Barber 5725ba2b2efdSGlen Barber 5726ba2b2efdSGlen BarberRelease 2000a - 2000-01-18 09:21:26 -0500 5727ba2b2efdSGlen Barber 5728ba2b2efdSGlen Barber changes by Paul Eggert 5729ba2b2efdSGlen Barber 5730ba2b2efdSGlen Barber The two hypertext documents have also been renamed. 5731ba2b2efdSGlen Barber 5732ba2b2efdSGlen Barber 5733ba2b2efdSGlen BarberRelease code1999i-data1999j - 1999-11-15 18:43:22 -0500 5734ba2b2efdSGlen Barber 5735ba2b2efdSGlen Barber Paul Eggert's changes 5736ba2b2efdSGlen Barber 5737ba2b2efdSGlen Barber additions to the "zic" manual page and the "Arts.htm" file 5738ba2b2efdSGlen Barber 5739ba2b2efdSGlen Barber 5740ba2b2efdSGlen BarberRelease code1999h-data1999i - 1999-11-08 14:55:21 -0500 5741ba2b2efdSGlen Barber 5742ba2b2efdSGlen Barber [not summarized] 5743ba2b2efdSGlen Barber 5744ba2b2efdSGlen Barber 5745ba2b2efdSGlen BarberRelease data1999h - 1999-10-07 03:50:29 -0400 5746ba2b2efdSGlen Barber 5747ba2b2efdSGlen Barber changes by Paul Eggert to "europe" (most importantly, fixing 5748ba2b2efdSGlen Barber Lithuania and Estonia) 5749ba2b2efdSGlen Barber 5750ba2b2efdSGlen Barber 5751ba2b2efdSGlen BarberRelease 1999g - 1999-09-28 11:06:18 -0400 5752ba2b2efdSGlen Barber 5753ba2b2efdSGlen Barber data changes by Paul Eggert (most importantly, the change for 5754ba2b2efdSGlen Barber Lebanon that buys correctness for this coming Sunday) 5755ba2b2efdSGlen Barber 5756ba2b2efdSGlen Barber The "code" file contains changes to "Makefile" and "checktab.awk" to 5757ba2b2efdSGlen Barber allow better checking of time zone files before they are published. 5758ba2b2efdSGlen Barber 5759ba2b2efdSGlen Barber 5760ba2b2efdSGlen BarberRelease 1999f - 1999-09-23 09:48:14 -0400 5761ba2b2efdSGlen Barber 5762ba2b2efdSGlen Barber changes by Arthur David Olson and Paul Eggert 5763ba2b2efdSGlen Barber 5764ba2b2efdSGlen Barber 5765ba2b2efdSGlen BarberRelease 1999e - 1999-08-17 15:20:54 -0400 5766ba2b2efdSGlen Barber 5767ba2b2efdSGlen Barber changes circulated by Paul Eggert, although the change to handling 5768ba2b2efdSGlen Barber of DST-specifying timezone names has been commented out for now 5769ba2b2efdSGlen Barber (search for "XXX" in "localtime.c" for details). These files also 5770ba2b2efdSGlen Barber do not make any changes to the start of DST in Brazil. 5771ba2b2efdSGlen Barber 5772ba2b2efdSGlen Barber In addition to Paul's changes, there are updates to "Arts.htm" and 5773ba2b2efdSGlen Barber cleanups of URLs. 5774ba2b2efdSGlen Barber 5775ba2b2efdSGlen Barber 5776ba2b2efdSGlen BarberRelease 1999d - 1999-03-30 11:31:07 -0500 5777ba2b2efdSGlen Barber 5778ba2b2efdSGlen Barber changes by Paul Eggert 5779ba2b2efdSGlen Barber 5780ba2b2efdSGlen Barber The Makefile's "make public" rule has also been changed to do a test 5781ba2b2efdSGlen Barber compile of each individual time zone data file (which should help 5782ba2b2efdSGlen Barber avoid problems such as the one we had with Nicosia). 5783ba2b2efdSGlen Barber 5784ba2b2efdSGlen Barber 5785ba2b2efdSGlen BarberRelease 1999c - 1999-03-25 09:47:47 -0500 5786ba2b2efdSGlen Barber 5787ba2b2efdSGlen Barber changes by Paul Eggert, most importantly the change for Chile. 5788ba2b2efdSGlen Barber 5789ba2b2efdSGlen Barber 5790ba2b2efdSGlen BarberRelease 1999b - 1999-02-01 17:51:44 -0500 5791ba2b2efdSGlen Barber 5792ba2b2efdSGlen Barber changes by Paul Eggert 5793ba2b2efdSGlen Barber 5794ba2b2efdSGlen Barber code changes (suggested by Mani Varadarajan, mani at be.com) for 5795ba2b2efdSGlen Barber correct handling of symbolic links when building using a relative directory 5796ba2b2efdSGlen Barber 5797ba2b2efdSGlen Barber code changes to generate correct messages for failed links 5798ba2b2efdSGlen Barber 5799ba2b2efdSGlen Barber updates to the URLs in Arts.htm 5800ba2b2efdSGlen Barber 5801ba2b2efdSGlen Barber 5802ba2b2efdSGlen BarberRelease 1999a - 1999-01-19 16:20:29 -0500 5803ba2b2efdSGlen Barber 5804ba2b2efdSGlen Barber error message internationalizations and corrections in zic.c and 5805ba2b2efdSGlen Barber zdump.c (as suggested by Vladimir Michl, vladimir.michl at upol.cz, 5806ba2b2efdSGlen Barber to whom thanks!) 5807ba2b2efdSGlen Barber 5808ba2b2efdSGlen Barber 5809ba2b2efdSGlen BarberRelease code1998h-data1998i - 1998-10-01 09:56:10 -0400 5810ba2b2efdSGlen Barber 5811ba2b2efdSGlen Barber changes for Brazil, Chile, and Germany 5812ba2b2efdSGlen Barber 5813ba2b2efdSGlen Barber support for use of "24:00" in the input files for the time zone compiler 5814ba2b2efdSGlen Barber 5815ba2b2efdSGlen Barber 5816ba2b2efdSGlen BarberRelease code1998g-data1998h - 1998-09-24 10:50:28 -0400 5817ba2b2efdSGlen Barber 5818ba2b2efdSGlen Barber changes by Paul Eggert 5819ba2b2efdSGlen Barber 5820ba2b2efdSGlen Barber correction to a define in the "private.h" file 5821ba2b2efdSGlen Barber 5822ba2b2efdSGlen Barber 5823ba2b2efdSGlen BarberRelease data1998g - 1998-08-11 03:28:35 -0000 5824ba2b2efdSGlen Barber [tzdata1998g.tar.gz is missing!] 5825ba2b2efdSGlen Barber 5826ba2b2efdSGlen Barber Lithuanian change provided by mgedmin at pub.osf.it 5827ba2b2efdSGlen Barber 5828ba2b2efdSGlen Barber Move creation of the GMT link with Etc/GMT to "etcetera" (from 5829ba2b2efdSGlen Barber "backward") to ensure that the GMT file is created even where folks 5830ba2b2efdSGlen Barber don't want the "backward" links (as suggested by Paul Eggert). 5831ba2b2efdSGlen Barber 5832ba2b2efdSGlen Barber 5833ba2b2efdSGlen BarberRelease data1998f - 1998-07-20 13:50:00 -0000 5834ba2b2efdSGlen Barber [tzdata1998f.tar.gz is missing!] 5835ba2b2efdSGlen Barber 5836259e2ad7SPhilip Paeps Update the "leapseconds" file to include the newly announced 5837ba2b2efdSGlen Barber insertion at the end of 1998. 5838ba2b2efdSGlen Barber 5839ba2b2efdSGlen Barber 5840ba2b2efdSGlen BarberRelease code1998f - 1998-06-01 10:18:31 -0400 5841ba2b2efdSGlen Barber 5842ba2b2efdSGlen Barber addition to localtime.c by Guy Harris 5843ba2b2efdSGlen Barber 5844ba2b2efdSGlen Barber 5845ba2b2efdSGlen BarberRelease 1998e - 1998-05-28 09:56:26 -0400 5846ba2b2efdSGlen Barber 5847ba2b2efdSGlen Barber The Makefile is changed to produce zoneinfo-posix rather than 5848ba2b2efdSGlen Barber zoneinfo/posix, and to produce zoneinfo-leaps rather than 5849ba2b2efdSGlen Barber zoneinfo/right. 5850ba2b2efdSGlen Barber 5851ba2b2efdSGlen Barber data changes by Paul Eggert 5852ba2b2efdSGlen Barber 5853ba2b2efdSGlen Barber changes from Guy Harris to provide asctime_r and ctime_r 5854ba2b2efdSGlen Barber 5855ba2b2efdSGlen Barber A usno1998 file (substantially identical to usno1997) has been added. 5856ba2b2efdSGlen Barber 5857ba2b2efdSGlen Barber 5858ba2b2efdSGlen BarberRelease 1998d - 1998-05-14 11:58:34 -0400 5859ba2b2efdSGlen Barber 5860ba2b2efdSGlen Barber changes to comments (in particular, elimination of references to CIA maps). 5861ba2b2efdSGlen Barber "Arts.htm", "WWW.htm", "asia", and "australasia" are the only places 5862ba2b2efdSGlen Barber where changes occur. 5863ba2b2efdSGlen Barber 5864ba2b2efdSGlen Barber 5865ba2b2efdSGlen BarberRelease 1998c - 1998-02-28 12:32:26 -0500 5866ba2b2efdSGlen Barber 5867ba2b2efdSGlen Barber changes by Paul Eggert (save the "French correction," on which I'll 5868ba2b2efdSGlen Barber wait for the dust to settle) 5869ba2b2efdSGlen Barber 5870ba2b2efdSGlen Barber symlink changes 5871ba2b2efdSGlen Barber 5872ba2b2efdSGlen Barber changes and additions to Arts.htm 5873ba2b2efdSGlen Barber 5874ba2b2efdSGlen Barber 5875ba2b2efdSGlen BarberRelease 1998b - 1998-01-17 14:31:51 -0500 5876ba2b2efdSGlen Barber 5877ba2b2efdSGlen Barber URL cleanups and additions 5878ba2b2efdSGlen Barber 5879ba2b2efdSGlen Barber 5880ba2b2efdSGlen BarberRelease 1998a - 1998-01-13 12:37:35 -0500 5881ba2b2efdSGlen Barber 5882ba2b2efdSGlen Barber changes by Paul Eggert 5883ba2b2efdSGlen Barber 5884ba2b2efdSGlen Barber 5885ba2b2efdSGlen BarberRelease code1997i-data1997k - 1997-12-29 09:53:41 -0500 5886ba2b2efdSGlen Barber 5887ba2b2efdSGlen Barber changes by Paul Eggert, with minor modifications from Arthur David 5888ba2b2efdSGlen Barber Olson to make the files more browser friendly 5889ba2b2efdSGlen Barber 5890ba2b2efdSGlen Barber 5891ba2b2efdSGlen BarberRelease code1997h-data1997j - 1997-12-18 17:47:35 -0500 5892ba2b2efdSGlen Barber 5893ba2b2efdSGlen Barber minor changes to put "TZif" at the start of each timezone information file 5894ba2b2efdSGlen Barber 5895ba2b2efdSGlen Barber a rule has also been added to the Makefile so you can 5896ba2b2efdSGlen Barber make zones 5897ba2b2efdSGlen Barber to just recompile the zone information files (rather than doing a 5898ba2b2efdSGlen Barber full "make install" with its other effects). 5899ba2b2efdSGlen Barber 5900ba2b2efdSGlen Barber 5901ba2b2efdSGlen BarberRelease data1997i - 1997-10-07 08:45:38 -0400 5902ba2b2efdSGlen Barber 5903ba2b2efdSGlen Barber changes to Africa by Paul Eggert 5904ba2b2efdSGlen Barber 5905ba2b2efdSGlen Barber 5906ba2b2efdSGlen BarberRelease code1997g-data1997h - 1997-09-04 16:56:54 -0400 5907ba2b2efdSGlen Barber 5908ba2b2efdSGlen Barber corrections for Uruguay (and other locations) 5909ba2b2efdSGlen Barber 5910ba2b2efdSGlen Barber Arthur David Olson's simple-minded fix allowing mktime to both 5911ba2b2efdSGlen Barber correctly handle leap seconds and correctly handle tm_sec values 5912ba2b2efdSGlen Barber upon which arithmetic has been performed. 5913ba2b2efdSGlen Barber 5914ba2b2efdSGlen Barber 5915ba2b2efdSGlen BarberRelease code1997f-data1997g - 1997-07-19 13:15:02 -0400 5916ba2b2efdSGlen Barber 5917ba2b2efdSGlen Barber Paul Eggert's updates 5918ba2b2efdSGlen Barber 5919ba2b2efdSGlen Barber a small change to a function prototype; 5920ba2b2efdSGlen Barber 5921ba2b2efdSGlen Barber "Music" has been renamed "Arts.htm", HTMLified, and augmented to 5922ba2b2efdSGlen Barber include information on Around the World in Eighty Days. 5923ba2b2efdSGlen Barber 5924ba2b2efdSGlen Barber 5925ba2b2efdSGlen BarberRelease code1997e-data1997f - 1997-05-03 18:52:34 -0400 5926ba2b2efdSGlen Barber 5927ba2b2efdSGlen Barber fixes to zic's error handling 5928ba2b2efdSGlen Barber 5929ba2b2efdSGlen Barber changes inspired by the item circulated on Slovenia 5930ba2b2efdSGlen Barber 5931ba2b2efdSGlen Barber The description of Web resources has been HTMLified for browsing 5932ba2b2efdSGlen Barber convenience. 5933ba2b2efdSGlen Barber 5934ba2b2efdSGlen Barber A new piece of tz-related music has been added to the "Music" file. 5935ba2b2efdSGlen Barber 5936ba2b2efdSGlen Barber 5937ba2b2efdSGlen BarberRelease code1997d-data1997e - 1997-03-29 12:48:52 -0500 5938ba2b2efdSGlen Barber 5939ba2b2efdSGlen Barber Paul Eggert's latest suggestions 5940ba2b2efdSGlen Barber 5941ba2b2efdSGlen Barber 5942ba2b2efdSGlen BarberRelease code1997c-data1997d - 1997-03-07 20:37:54 -0500 5943ba2b2efdSGlen Barber 5944ba2b2efdSGlen Barber changes to "zic.c" to correct performance of the "-s" option 5945ba2b2efdSGlen Barber 5946ba2b2efdSGlen Barber a new file "usno1997" 5947ba2b2efdSGlen Barber 5948ba2b2efdSGlen Barber 5949ba2b2efdSGlen BarberRelease data1997c - 1997-03-04 09:58:18 -0500 5950ba2b2efdSGlen Barber 5951ba2b2efdSGlen Barber changes in Israel 5952ba2b2efdSGlen Barber 5953ba2b2efdSGlen Barber 5954ba2b2efdSGlen BarberRelease 1997b - 1997-02-27 18:34:19 -0500 5955ba2b2efdSGlen Barber 5956ba2b2efdSGlen Barber The data file incorporates the 1997 leap second. 5957ba2b2efdSGlen Barber 5958ba2b2efdSGlen Barber The code file incorporates Arthur David Olson's take on the 5959ba2b2efdSGlen Barber zic/multiprocessor/directory-creation situation. 5960ba2b2efdSGlen Barber 5961ba2b2efdSGlen Barber 5962ba2b2efdSGlen BarberRelease 1997a - 1997-01-21 09:11:10 -0500 5963ba2b2efdSGlen Barber 5964ba2b2efdSGlen Barber Paul Eggert's Antarctica (and other changes) 5965ba2b2efdSGlen Barber 5966ba2b2efdSGlen Barber Arthur David Olson finessed the "getopt" issue by checking against 5967ba2b2efdSGlen Barber both -1 and EOF (regardless of POSIX, SunOS 4.1.1's manual says -1 5968ba2b2efdSGlen Barber is returned while SunOS 5.5's manual says EOF is returned). 5969ba2b2efdSGlen Barber 5970ba2b2efdSGlen Barber 5971ba2b2efdSGlen BarberRelease code1996o-data1996n - 1996-12-27 21:42:05 -0500 5972ba2b2efdSGlen Barber 5973ba2b2efdSGlen Barber Paul Eggert's latest changes 5974ba2b2efdSGlen Barber 5975ba2b2efdSGlen Barber 5976ba2b2efdSGlen BarberRelease code1996n - 1996-12-16 09:42:02 -0500 5977ba2b2efdSGlen Barber 5978ba2b2efdSGlen Barber link snapping fix from Bruce Evans (via Garrett Wollman) 5979ba2b2efdSGlen Barber 5980ba2b2efdSGlen Barber 5981ba2b2efdSGlen BarberRelease data1996m - 1996-11-24 02:37:34 -0000 5982ba2b2efdSGlen Barber [tzdata1996m.tar.gz is missing!] 5983ba2b2efdSGlen Barber 5984ba2b2efdSGlen Barber Paul Eggert's batch of changes 5985ba2b2efdSGlen Barber 5986ba2b2efdSGlen Barber 5987ba2b2efdSGlen BarberRelease code1996m-data1996l - 1996-11-05 14:00:12 -0500 5988ba2b2efdSGlen Barber 5989ba2b2efdSGlen Barber No functional changes here; the files have simply been changed to 5990ba2b2efdSGlen Barber make more use of ISO style dates in comments. The names of the above 5991ba2b2efdSGlen Barber files now include the year in full. 5992ba2b2efdSGlen Barber 5993ba2b2efdSGlen Barber 5994ba2b2efdSGlen BarberRelease code96l - 1996-09-08 17:12:20 -0400 5995ba2b2efdSGlen Barber 5996ba2b2efdSGlen Barber tzcode96k was missing a couple of pieces. 5997ba2b2efdSGlen Barber 5998ba2b2efdSGlen Barber 5999ba2b2efdSGlen BarberRelease 96k - 1996-09-08 16:06:22 -0400 6000ba2b2efdSGlen Barber 6001ba2b2efdSGlen Barber the latest round of changes from Paul Eggert 6002ba2b2efdSGlen Barber 6003ba2b2efdSGlen Barber the recent Year 2000 material 6004ba2b2efdSGlen Barber 6005ba2b2efdSGlen Barber 6006ba2b2efdSGlen BarberRelease code96j - 1996-07-30 13:18:53 -0400 6007ba2b2efdSGlen Barber 6008ba2b2efdSGlen Barber Set sp->typecnt as suggested by Timothy Patrick Murphy. 6009ba2b2efdSGlen Barber 6010ba2b2efdSGlen Barber 6011ba2b2efdSGlen BarberRelease code96i - 1996-07-27 20:11:35 -0400 6012ba2b2efdSGlen Barber 6013ba2b2efdSGlen Barber Paul's suggested patch for strftime %V week numbers 6014ba2b2efdSGlen Barber 6015ba2b2efdSGlen Barber 6016ba2b2efdSGlen BarberRelease data96i - 1996-07-01 18:13:04 -0400 6017ba2b2efdSGlen Barber 6018ba2b2efdSGlen Barber "northamerica" and "europe" changes by Paul Eggert 6019ba2b2efdSGlen Barber 6020ba2b2efdSGlen Barber 6021ba2b2efdSGlen BarberRelease code96h - 1996-06-05 08:02:21 -0400 6022ba2b2efdSGlen Barber 6023ba2b2efdSGlen Barber fix for handling transitions specified in Universal Time 6024ba2b2efdSGlen Barber 6025ba2b2efdSGlen Barber Some "public domain" notices have also been added. 6026ba2b2efdSGlen Barber 6027ba2b2efdSGlen Barber 6028ba2b2efdSGlen BarberRelease code96g - 1996-05-16 14:00:26 -0400 6029ba2b2efdSGlen Barber 6030ba2b2efdSGlen Barber fix for the simultaneous-DST-and-zone-change challenge 6031ba2b2efdSGlen Barber 6032ba2b2efdSGlen Barber 6033ba2b2efdSGlen BarberRelease data96h - 1996-05-09 17:40:51 -0400 6034ba2b2efdSGlen Barber 6035ba2b2efdSGlen Barber changes by Paul Eggert 6036ba2b2efdSGlen Barber 6037ba2b2efdSGlen Barber 6038ba2b2efdSGlen BarberRelease code96f-data96g - 1996-05-03 03:09:59 -0000 6039ba2b2efdSGlen Barber [tzcode96f.tar.gz + tzdata96g.tar.gz are both missing!] 6040ba2b2efdSGlen Barber 6041ba2b2efdSGlen Barber The changes get us some of the way to fixing the problems noted in Paul 6042ba2b2efdSGlen Barber Eggert's letter yesterday (in addition to a few others). The approach 6043ba2b2efdSGlen Barber has been to make zic a bit smarter about figuring out what time zone 6044ba2b2efdSGlen Barber abbreviations apply just after the time specified in the "UNTIL" part 6045ba2b2efdSGlen Barber of a zone line. Putting the smarts in zic means avoiding having 6046ba2b2efdSGlen Barber transition times show up in both "Zone" lines and "Rule" lines, which 6047ba2b2efdSGlen Barber in turn avoids multiple transition time entries in time zone files. 6048ba2b2efdSGlen Barber (This also makes the zic input files such as "europe" a bit shorter and 6049ba2b2efdSGlen Barber should ease maintenance.) 6050ba2b2efdSGlen Barber 6051ba2b2efdSGlen Barber 6052ba2b2efdSGlen BarberRelease data96f - 1996-04-19 19:20:03 -0000 6053ba2b2efdSGlen Barber [tzdata96f.tar.gz is missing!] 6054ba2b2efdSGlen Barber 6055ba2b2efdSGlen Barber The only changes are to the "northamerica" file; the time zone 6056ba2b2efdSGlen Barber abbreviation for Denver is corrected to MST (and MDT), and the 6057ba2b2efdSGlen Barber comments for Mexico have been updated. 6058ba2b2efdSGlen Barber 6059ba2b2efdSGlen Barber 6060ba2b2efdSGlen BarberRelease data96e - 1996-03-19 17:37:26 -0500 6061ba2b2efdSGlen Barber 6062ba2b2efdSGlen Barber Proposals by Paul Eggert, in particular the Portugal change that 6063ba2b2efdSGlen Barber comes into play at the end of this month. 6064ba2b2efdSGlen Barber 6065ba2b2efdSGlen Barber 6066ba2b2efdSGlen BarberRelease data96d - 1996-03-18 20:49:39 -0500 6067ba2b2efdSGlen Barber 6068ba2b2efdSGlen Barber [not summarized] 6069ba2b2efdSGlen Barber 6070ba2b2efdSGlen Barber 6071ba2b2efdSGlen BarberRelease code96e - 1996-02-29 15:43:27 -0000 6072ba2b2efdSGlen Barber [tzcode96e.tar.gz is missing!] 6073ba2b2efdSGlen Barber 6074ba2b2efdSGlen Barber internationalization changes and the fix to the documentation for strftime 6075ba2b2efdSGlen Barber 6076ba2b2efdSGlen Barber 6077ba2b2efdSGlen BarberRelease code96d-data96c - 1996-02-12 11:05:27 -0500 6078ba2b2efdSGlen Barber 6079ba2b2efdSGlen Barber The "code" file simply updates Bob Kridle's electronic address. 6080ba2b2efdSGlen Barber 6081ba2b2efdSGlen Barber The "data" file updates rules for Mexico. 6082ba2b2efdSGlen Barber 6083ba2b2efdSGlen Barber 6084ba2b2efdSGlen BarberRelease data96b - 1996-01-27 15:44:42 -0500 6085ba2b2efdSGlen Barber 6086ba2b2efdSGlen Barber Kiribati change 6087ba2b2efdSGlen Barber 6088ba2b2efdSGlen Barber 6089ba2b2efdSGlen BarberRelease code96c - 1996-01-16 16:58:15 -0500 6090ba2b2efdSGlen Barber 6091ba2b2efdSGlen Barber leap-year streamlining and binary-search changes 6092ba2b2efdSGlen Barber 6093ba2b2efdSGlen Barber fix to newctime.3 6094ba2b2efdSGlen Barber 6095ba2b2efdSGlen Barber 6096ba2b2efdSGlen BarberRelease code96b - 1996-01-10 20:42:39 -0500 6097ba2b2efdSGlen Barber 6098ba2b2efdSGlen Barber fixes and enhancements from Paul Eggert, including code that 6099ba2b2efdSGlen Barber emulates the behavior of recent versions of the SunOS "date" 6100ba2b2efdSGlen Barber command. 6101ba2b2efdSGlen Barber 6102ba2b2efdSGlen Barber 6103ba2b2efdSGlen BarberRelease 96a - 1996-01-06 09:08:24 -0500 6104ba2b2efdSGlen Barber 6105ba2b2efdSGlen Barber Israel updates 6106ba2b2efdSGlen Barber 6107ba2b2efdSGlen Barber fixes to strftime.c for correct ISO 8601 week number generation, 6108ba2b2efdSGlen Barber plus support for two new formats ('G' and 'g') to give ISO 8601 year 6109ba2b2efdSGlen Barber numbers (which are not necessarily the same as calendar year numbers) 6110ba2b2efdSGlen Barber 6111ba2b2efdSGlen Barber 6112ba2b2efdSGlen BarberRelease code95i-data95m - 1995-12-21 12:46:47 -0500 6113ba2b2efdSGlen Barber 6114ba2b2efdSGlen Barber The latest revisions from Paul Eggert are included, the usno1995 6115ba2b2efdSGlen Barber file has been updated, and a new file ("WWW") covering useful URLs 6116ba2b2efdSGlen Barber has been added. 6117ba2b2efdSGlen Barber 6118ba2b2efdSGlen Barber 6119ba2b2efdSGlen BarberRelease code95h-data95l - 1995-12-19 18:10:12 -0500 6120ba2b2efdSGlen Barber 6121ba2b2efdSGlen Barber A simplification of a macro definition, a change to data for Sudan, 6122ba2b2efdSGlen Barber and (for last minute shoppers) notes in the "Music" file on the CD 6123ba2b2efdSGlen Barber "Old Man Time". 6124ba2b2efdSGlen Barber 6125ba2b2efdSGlen Barber 6126ba2b2efdSGlen BarberRelease code95g-data95k - 1995-10-30 10:32:47 -0500 6127ba2b2efdSGlen Barber 6128ba2b2efdSGlen Barber (slightly reformatted) 8-bit-clean proposed patch 6129ba2b2efdSGlen Barber 6130ba2b2efdSGlen Barber minor patch: US/Eastern -> America/New_York 6131ba2b2efdSGlen Barber 6132ba2b2efdSGlen Barber snapshot of the USNO's latest data ("usno1995") 6133ba2b2efdSGlen Barber 6134ba2b2efdSGlen Barber some other minor cleanups 6135ba2b2efdSGlen Barber 6136ba2b2efdSGlen Barber 6137ba2b2efdSGlen BarberRelease code95f-data95j - 1995-10-28 21:01:34 -0000 6138ba2b2efdSGlen Barber [tzcode95f.tar.gz + tzdata95j.tar.gz are both missing!] 6139ba2b2efdSGlen Barber 6140ba2b2efdSGlen Barber European cleanups 6141ba2b2efdSGlen Barber 6142ba2b2efdSGlen Barber support for 64-bit time_t's 6143ba2b2efdSGlen Barber 6144ba2b2efdSGlen Barber optimization in localtime.c 6145ba2b2efdSGlen Barber 6146ba2b2efdSGlen Barber 6147ba2b2efdSGlen BarberRelease code95e - 1995-10-13 13:23:57 -0400 6148ba2b2efdSGlen Barber 6149ba2b2efdSGlen Barber the mktime change to scan from future to past when trying to find time zone 6150ba2b2efdSGlen Barber offsets 6151ba2b2efdSGlen Barber 6152ba2b2efdSGlen Barber 6153ba2b2efdSGlen BarberRelease data95i - 1995-09-26 10:43:26 -0400 6154ba2b2efdSGlen Barber 6155ba2b2efdSGlen Barber For Canada/Central, guess that the Sun customer's "one week too 6156ba2b2efdSGlen Barber early" was just a approximation, and the true error is one month 6157ba2b2efdSGlen Barber too early. This is consistent with the rest of Canada. 6158ba2b2efdSGlen Barber 6159ba2b2efdSGlen Barber 6160ba2b2efdSGlen BarberRelease data95h - 1995-09-21 11:26:48 -0400 6161ba2b2efdSGlen Barber 6162ba2b2efdSGlen Barber latest changes from Paul Eggert 6163ba2b2efdSGlen Barber 6164ba2b2efdSGlen Barber 6165ba2b2efdSGlen BarberRelease code95d - 1995-09-14 11:14:45 -0400 6166ba2b2efdSGlen Barber 6167ba2b2efdSGlen Barber the addition of a "Music" file, which documents four recorded 6168ba2b2efdSGlen Barber versions of the tune "Save That Time". 6169ba2b2efdSGlen Barber 6170ba2b2efdSGlen Barber 6171ba2b2efdSGlen BarberRelease data95g - 1995-09-01 17:21:36 -0400 6172ba2b2efdSGlen Barber 6173ba2b2efdSGlen Barber "yearistype" correction 6174ba2b2efdSGlen Barber 6175ba2b2efdSGlen Barber 6176ba2b2efdSGlen BarberRelease data95f - 1995-08-28 20:46:56 -0400 6177ba2b2efdSGlen Barber 6178ba2b2efdSGlen Barber Paul Eggert's change to the australasia file 6179ba2b2efdSGlen Barber 6180ba2b2efdSGlen Barber 6181ba2b2efdSGlen BarberRelease data95e - 1995-07-08 18:02:34 -0400 6182ba2b2efdSGlen Barber 6183ba2b2efdSGlen Barber The only change is a leap second at the end of this year. 6184ba2b2efdSGlen Barber Thanks to Bradley White for forwarding news on the leap second. 6185ba2b2efdSGlen Barber 6186ba2b2efdSGlen Barber 6187ba2b2efdSGlen BarberRelease data95d - 1995-07-03 13:26:22 -0400 6188ba2b2efdSGlen Barber 6189ba2b2efdSGlen Barber Paul Eggert's changes 6190ba2b2efdSGlen Barber 6191ba2b2efdSGlen Barber 6192ba2b2efdSGlen BarberRelease data95c - 1995-07-02 19:19:28 -0400 6193ba2b2efdSGlen Barber 6194ba2b2efdSGlen Barber changes to "asia", "backward", "europe", and "southamerica" 6195ba2b2efdSGlen Barber (read: northamericacentrics need not apply) 6196ba2b2efdSGlen Barber 6197ba2b2efdSGlen Barber 6198ba2b2efdSGlen BarberRelease code95c - 1995-03-13 14:00:46 -0500 6199ba2b2efdSGlen Barber 6200ba2b2efdSGlen Barber one-line fix for sign extension problems in detzcode 6201ba2b2efdSGlen Barber 6202ba2b2efdSGlen Barber 6203ba2b2efdSGlen BarberRelease 95b - 1995-03-04 11:22:38 -0500 6204ba2b2efdSGlen Barber 6205ba2b2efdSGlen Barber Minor changes in both: 6206ba2b2efdSGlen Barber 6207ba2b2efdSGlen Barber The "code" file contains a workaround for the lack of "unistd.h" in 6208ba2b2efdSGlen Barber Microsoft C++ version 7. 6209ba2b2efdSGlen Barber 6210ba2b2efdSGlen Barber The "data" file contains a fixed "Link" for America/Shiprock. 6211ba2b2efdSGlen Barber 6212ba2b2efdSGlen Barber 6213ba2b2efdSGlen BarberRelease 94h - 1994-12-10 12:51:14 -0500 6214ba2b2efdSGlen Barber 6215ba2b2efdSGlen Barber The files: 6216ba2b2efdSGlen Barber 6217ba2b2efdSGlen Barber * incorporate the changes to "zdump" and "date" to make changes to 6218ba2b2efdSGlen Barber the "TZ" environment variable permanent; 6219ba2b2efdSGlen Barber 6220ba2b2efdSGlen Barber * incorporate the table changes by Paul Eggert; 6221ba2b2efdSGlen Barber 6222ba2b2efdSGlen Barber * include (and document) support for universal time specifications in 6223ba2b2efdSGlen Barber data files - but do not (yet) include use of this feature in the 6224ba2b2efdSGlen Barber data files. 6225ba2b2efdSGlen Barber 6226ba2b2efdSGlen Barber Think of this as "TZ Classic" - the software has been set up not to break if 6227ba2b2efdSGlen Barber universal time shows up in its input, and data entries have been 6228ba2b2efdSGlen Barber left as is so as not to break existing implementations. 6229ba2b2efdSGlen Barber 6230ba2b2efdSGlen Barber 6231ba2b2efdSGlen BarberRelease data94f - 1994-08-20 12:56:09 -0400 6232ba2b2efdSGlen Barber 6233ba2b2efdSGlen Barber (with thanks!) the latest data updates from Paul Eggert 6234ba2b2efdSGlen Barber 6235ba2b2efdSGlen Barber 6236ba2b2efdSGlen BarberRelease data94e - 1994-06-04 13:13:53 -0400 6237ba2b2efdSGlen Barber 6238ba2b2efdSGlen Barber [not summarized] 6239ba2b2efdSGlen Barber 6240ba2b2efdSGlen Barber 6241ba2b2efdSGlen BarberRelease code94g - 1994-05-05 12:14:07 -0400 6242ba2b2efdSGlen Barber 6243ba2b2efdSGlen Barber fix missing "optind.c" and a reference to it in the Makefile 6244ba2b2efdSGlen Barber 6245ba2b2efdSGlen Barber 6246ba2b2efdSGlen BarberRelease code94f - 1994-05-05 13:00:33 -0000 6247ba2b2efdSGlen Barber [tzcode94f.tar.gz is missing!] 6248ba2b2efdSGlen Barber 6249ba2b2efdSGlen Barber changes to avoid overflow in difftime, as well as changes to cope 6250ba2b2efdSGlen Barber with the 52/53 challenge in strftime 6251ba2b2efdSGlen Barber 6252ba2b2efdSGlen Barber 6253ba2b2efdSGlen BarberRelease code94e - 1994-03-30 23:32:59 -0500 6254ba2b2efdSGlen Barber 6255ba2b2efdSGlen Barber change for the benefit of PCTS 6256ba2b2efdSGlen Barber 6257ba2b2efdSGlen Barber 6258ba2b2efdSGlen BarberRelease 94d - 1994-02-24 15:42:25 -0500 6259ba2b2efdSGlen Barber 6260ba2b2efdSGlen Barber Avoid clashes with POSIX semantics for zones such as GMT+4. 6261ba2b2efdSGlen Barber 6262ba2b2efdSGlen Barber Some other very minor housekeeping is also present. 6263ba2b2efdSGlen Barber 6264ba2b2efdSGlen Barber 6265ba2b2efdSGlen BarberRelease code94c - 1994-02-10 08:52:40 -0500 6266ba2b2efdSGlen Barber 6267ba2b2efdSGlen Barber Fix bug where mkdirs was broken unless you compile with 6268ba2b2efdSGlen Barber -fwritable-strings (which is generally losing to do). 6269ba2b2efdSGlen Barber 6270ba2b2efdSGlen Barber 6271ba2b2efdSGlen BarberRelease 94b - 1994-02-07 10:04:33 -0500 6272ba2b2efdSGlen Barber 6273ba2b2efdSGlen Barber work by Paul Eggert who notes: 6274ba2b2efdSGlen Barber 6275ba2b2efdSGlen Barber I found another book of time zone histories by E W Whitman; it's not 6276ba2b2efdSGlen Barber as extensive as Shanks but has a few goodies of its own. I used it 6277ba2b2efdSGlen Barber to update the tables. I also fixed some more as a result of 6278ba2b2efdSGlen Barber correspondence with Adam David and Peter Ilieve, and move some stray 6279ba2b2efdSGlen Barber links from 'europe' to 'backward'. I corrected some scanning errors 6280ba2b2efdSGlen Barber in usno1989. 6281ba2b2efdSGlen Barber 6282ba2b2efdSGlen Barber As far as the code goes, I fixed zic to allow years in the range 6283ba2b2efdSGlen Barber INT_MIN to INT_MAX; this fixed a few boundary conditions around 1900. 6284ba2b2efdSGlen Barber And I cleaned up the zic documentation a little bit. 6285ba2b2efdSGlen Barber 6286ba2b2efdSGlen Barber 6287ba2b2efdSGlen BarberRelease data94a - 1994-02-03 08:58:54 -0500 6288ba2b2efdSGlen Barber 6289ba2b2efdSGlen Barber It simply incorporates the recently announced leap second into the 6290ba2b2efdSGlen Barber "leapseconds" file. 6291ba2b2efdSGlen Barber 6292ba2b2efdSGlen Barber 6293ba2b2efdSGlen BarberRelease 93g - 1993-11-22 17:28:27 -0500 6294ba2b2efdSGlen Barber 6295ba2b2efdSGlen Barber Paul Eggert has provided a good deal of historic information (based 6296ba2b2efdSGlen Barber on Shanks), and there are some code changes to deal with the buglets 6297ba2b2efdSGlen Barber that crawled out in dealing with the new information. 6298ba2b2efdSGlen Barber 6299ba2b2efdSGlen Barber 6300ba2b2efdSGlen BarberRelease 93f - 1993-10-15 12:27:46 -0400 6301ba2b2efdSGlen Barber 6302ba2b2efdSGlen Barber Paul Eggert's changes 6303ba2b2efdSGlen Barber 6304ba2b2efdSGlen Barber 6305ba2b2efdSGlen BarberRelease 93e - 1993-09-05 21:21:44 -0400 6306ba2b2efdSGlen Barber 6307ba2b2efdSGlen Barber This has updated data for Israel, England, and Kwajalein. There's 6308ba2b2efdSGlen Barber also an update to "zdump" to cope with Kwajalein's 24-hour jump. 6309ba2b2efdSGlen Barber Thanks to Paul Eggert and Peter Ilieve for the changes. 6310ba2b2efdSGlen Barber 6311ba2b2efdSGlen Barber 6312ba2b2efdSGlen BarberRelease 93d - 1993-06-17 23:34:17 -0400 6313ba2b2efdSGlen Barber 6314ba2b2efdSGlen Barber new fix and new data on Israel 6315ba2b2efdSGlen Barber 6316ba2b2efdSGlen Barber 6317ba2b2efdSGlen BarberRelease 93c - 1993-06-06 19:31:55 -0400 6318ba2b2efdSGlen Barber 6319ba2b2efdSGlen Barber [not summarized] 6320ba2b2efdSGlen Barber 6321ba2b2efdSGlen Barber 6322ba2b2efdSGlen BarberRelease 93b - 1993-02-02 14:53:58 -0500 6323ba2b2efdSGlen Barber 6324ba2b2efdSGlen Barber updated "leapseconds" file 6325ba2b2efdSGlen Barber 6326ba2b2efdSGlen Barber 6327ba2b2efdSGlen BarberRelease 93 - 1993-01-08 07:01:06 -0500 6328ba2b2efdSGlen Barber 6329ba2b2efdSGlen Barber At kre's suggestion, the package has been split in two - a code piece 6330ba2b2efdSGlen Barber (which also includes documentation) that's only of use to folks who 6331ba2b2efdSGlen Barber want to recompile things and a data piece useful to anyone who can 6332ba2b2efdSGlen Barber run "zic". 6333ba2b2efdSGlen Barber 6334ba2b2efdSGlen Barber The new version has a few changes to the data files, a few 6335ba2b2efdSGlen Barber portability changes, and an off-by-one fix (with thanks to 6336ba2b2efdSGlen Barber Tom Karzes at deshaw.com for providing a description and a 6337ba2b2efdSGlen Barber solution). 6338ba2b2efdSGlen Barber 6339ba2b2efdSGlen Barber 6340ba2b2efdSGlen BarberRelease 92c - 1992-11-21 17:35:36 -0000 6341ba2b2efdSGlen Barber [tz92c.tar.Z is missing!] 6342ba2b2efdSGlen Barber 6343ba2b2efdSGlen Barber The fallout from the latest round of DST transitions. 6344ba2b2efdSGlen Barber 6345ba2b2efdSGlen Barber There are changes for Portugal, Saskatchewan, and "Pacific-New"; 6346ba2b2efdSGlen Barber there's also a change to "zic.c" that makes it portable to more systems. 6347ba2b2efdSGlen Barber 6348ba2b2efdSGlen Barber 6349ba2b2efdSGlen BarberRelease 92 - 1992-04-25 18:17:03 -0000 6350ba2b2efdSGlen Barber [tz92.tar.Z is missing!] 6351ba2b2efdSGlen Barber 6352ba2b2efdSGlen Barber By popular demand (well, at any rate, following a request by kre at munnari) 6353ba2b2efdSGlen Barber 6354ba2b2efdSGlen Barber 6355ba2b2efdSGlen BarberThe 1989 update of the time zone package featured: 6356ba2b2efdSGlen Barber 6357ba2b2efdSGlen Barber * POSIXization (including interpretation of POSIX-style TZ environment 6358ba2b2efdSGlen Barber variables, provided by Guy Harris), 6359ba2b2efdSGlen Barber * ANSIfication (including versions of "mktime" and "difftime"), 6360ba2b2efdSGlen Barber * SVIDulation (an "altzone" variable) 6361ba2b2efdSGlen Barber * MACHination (the "gtime" function) 6362ba2b2efdSGlen Barber * corrections to some time zone data (including corrections to the rules 6363ba2b2efdSGlen Barber for Great Britain and New Zealand) 6364ba2b2efdSGlen Barber * reference data from the United States Naval Observatory for folks who 6365ba2b2efdSGlen Barber want to do additional time zones 6366ba2b2efdSGlen Barber * and the 1989 data for Saudi Arabia. 6367ba2b2efdSGlen Barber 6368ba2b2efdSGlen Barber (Since this code will be treated as "part of the implementation" in some 6369ba2b2efdSGlen Barber places and as "part of the application" in others, there's no good way to 6370ba2b2efdSGlen Barber name functions, such as timegm, that are not part of the proposed ANSI C 6371ba2b2efdSGlen Barber standard; such functions have kept their old, underscore-free names in this 6372ba2b2efdSGlen Barber update.) 6373ba2b2efdSGlen Barber 6374ba2b2efdSGlen Barber And the "dysize" function has disappeared; it was present to allow 6375ba2b2efdSGlen Barber compilation of the "date" command on old BSD systems, and a version of "date" 6376ba2b2efdSGlen Barber is now provided in the package. The "date" command is not created when you 6377ba2b2efdSGlen Barber "make all" since it may lack options provided by the version distributed with 6378ba2b2efdSGlen Barber your operating system, or may not interact with the system in the same way 6379ba2b2efdSGlen Barber the native version does. 6380ba2b2efdSGlen Barber 6381ba2b2efdSGlen Barber Since POSIX frowns on correct leap second handling, the default behavior of 6382ba2b2efdSGlen Barber the "zic" command (in the absence of a "-L" option) has been changed to omit 6383ba2b2efdSGlen Barber leap second information from its output files. 6384ba2b2efdSGlen Barber 6385ba2b2efdSGlen Barber 6386ba2b2efdSGlen Barber----- 6387ba2b2efdSGlen BarberNotes 6388ba2b2efdSGlen Barber 6389ba2b2efdSGlen BarberThis file contains copies of the part of each release announcement 6390ba2b2efdSGlen Barberthat talks about the changes in that release. The text has been 6391ba2b2efdSGlen Barberadapted and reformatted for the purposes of this file. 6392ba2b2efdSGlen Barber 6393ba2b2efdSGlen BarberTraditionally a release R consists of a pair of tarball files, 6394ba2b2efdSGlen BarbertzcodeR.tar.gz and tzdataR.tar.gz. However, some releases (e.g., 6395ba2b2efdSGlen Barbercode2010a, data2012c) consist of just one or the other tarball, and a 6396ba2b2efdSGlen Barberfew (e.g., code2012c-data2012d) have tarballs with mixed version 6397ba2b2efdSGlen Barbernumbers. Recent releases also come in an experimental format 6398ba2b2efdSGlen Barberconsisting of a single tarball tzdb-R.tar.lz with extra data. 6399ba2b2efdSGlen Barber 6400ba2b2efdSGlen BarberRelease timestamps are taken from the release's commit (for newer, 6401ba2b2efdSGlen BarberGit-based releases), from the newest file in the tarball (for older 6402ba2b2efdSGlen Barberreleases, where this info is available) or from the email announcing 640389abb9f8SPhilip Paepsthe release (if all else fails; these are marked with a time zone 640489abb9f8SPhilip Paepsabbreviation of -0000 and an "is missing!" comment). 6405ba2b2efdSGlen Barber 6406ba2b2efdSGlen BarberEarlier versions of the code and data were not announced on the tz 6407ba2b2efdSGlen Barberlist and are not summarized here. 6408ba2b2efdSGlen Barber 6409ba2b2efdSGlen BarberThis file is in the public domain. 6410ba2b2efdSGlen Barber 6411ba2b2efdSGlen BarberLocal Variables: 6412ba2b2efdSGlen Barbercoding: utf-8 6413ba2b2efdSGlen BarberEnd: 6414