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/freebsd/usr.sbin/ntp/ntpd/
H A Dleap-seconds2 # Coordinated Universal Time (UTC) is the reference time scale derived
5 # clocks. UTC differs from TAI by an integer number of seconds; it is the basis
12 # in 1972 to the replacement of UT1 by UTC as the reference time scale.
19 # Leap seconds are needed to keep the two time scales in agreement, i.e. UT1-UTC smaller
20 # than 0.9 seconds. Therefore, when necessary a "leap second" is applied to UTC.
21 # Since the adoption of this system in 1972 it has been necessary to add a number of seconds to UTC,
24 # theoretically possible to have a negative leap second (a second removed from UTC), but so far,
25 # all leap seconds have been positive (a second has been added to UTC). Based on what we know about
35 # RESPONSIBILITY OF THE DECISION TO INTRODUCE A LEAP SECOND IN UTC
36 # The decision to introduce a leap second in UTC is the responsibility of the Earth Orientation Cen…
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/freebsd/contrib/tzdata/
H A Dleap-seconds.list2 # Coordinated Universal Time (UTC) is the reference time scale derived
5 # clocks. UTC differs from TAI by an integer number of seconds; it is the basis
12 # in 1972 to the replacement of UT1 by UTC as the reference time scale.
19 # Leap seconds are needed to keep the two time scales in agreement, i.e. UT1-UTC smaller
20 # than 0.9 seconds. Therefore, when necessary a "leap second" is applied to UTC.
21 # Since the adoption of this system in 1972 it has been necessary to add a number of seconds to UTC,
24 # theoretically possible to have a negative leap second (a second removed from UTC), but so far,
25 # all leap seconds have been positive (a second has been added to UTC). Based on what we know about
35 # RESPONSIBILITY OF THE DECISION TO INTRODUCE A LEAP SECOND IN UTC
36 # The decision to introduce a leap second in UTC i
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H A Dantarctica43 # Casey moved from UTC+8 to UTC+11
44 # Davis moved from UTC+7 to UTC+5
45 # Mawson moved from UTC+6 to UTC+5
57 # - Casey station reverted to its normal time of UTC+8 on 5 March 2010.
58 # The change to UTC+11 is being considered as a regular summer thing but
61 # - Davis station will revert to its normal time of UTC+7 at 10 March 2010
62 # 20:00 UTC
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H A Dleapseconds20 # periodically uses leap seconds to keep UTC to within 0.9 s of UT1
32 # of UTC.
34 # All leap-seconds are Stationary (S) at the given UTC time.
68 # UTC timestamp when this leap second list expires.
75 #updated 1736208000 (2025-01-07 00:00:00 UTC)
76 #expires 1766880000 (2025-12-28 00:00:00 UTC)
H A Detcetera20 # which load the "UTC" file to handle seconds properly.
21 Zone Etc/UTC 0 - UTC
32 # where functions like gmtime load "GMT" instead of the "Etc/UTC".
H A Dbackward81 Link Etc/UTC Etc/UCT
82 Link Etc/UTC Etc/Universal
83 Link Etc/UTC Etc/Zulu
121 Link Etc/UTC UCT
134 Link Etc/UTC UTC
135 Link Etc/UTC Universal
137 Link Etc/UTC Zulu
H A Dsouthamerica45 # ARGENTINA 3 H BEHIND UTC
221 # The following eight (8) provinces pulled clocks back to UTC-04:00 at
223 # Apparently, all nine provinces would go back to UTC-03:00 at the same
230 # ... this weekend, the Province of Tucumán decided it'd go back to UTC-03:00
254 # San Juan changed from UTC-03:00 to UTC-04:00 at midnight between
255 # Sunday, May 30th and Monday, May 31st. It changed back to UTC-03:00
303 # province) decided to go back to UTC-3 effective midnight Jan 20th 2008
305 # 1 hour), and they intend to keep UTC-3 as their timezone all year round
313 # back in 2004, when these provinces changed to UTC
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H A Deurope252 # The legal time in the UK outside of summer time is definitely GMT, not UTC;
518 # after 1971-10-31 02:00 UTC; although this approximation has tm_isdst
519 # flags that are reversed, its UTC offsets are correct and this often
739 # Mitteleuropäische Zeit (MEZ) = UTC+01:00
740 # Mitteleuropäische Sommerzeit (MESZ) = UTC+02:00
756 # Central European Time (CET) = UTC+01:00
757 # Central European Summer Time (CEST) = UTC+02:00
1061 # Greenland has four local times, and the relation to UTC
1064 # The military zone near Thule UTC-4
1065 # Standard Greenland time UTC
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/freebsd/contrib/bmake/unit-tests/
H A Dvarmod-gmtime.mk146 export TZ=UTC
154 export TZ=UTC
162 export TZ=UTC
H A Ddirective-export.mk58 export TZ=${UTC}
/freebsd/contrib/ntp/
H A DREADME.leapsmear8 originally designed to distribute UTC time over a network as accurately as
12 from the UTC time scale in irregular intervals to keep the UTC time scale
35 second, so the last second of the UTC day is repeated and thus duplicate
68 an NTP server adds a certain increasing "smear" offset to the real UTC time
80 UTC before the leap second, up to the beginning of the smear interval, and
81 again corresponds to UTC after the insertion of the leap second has
97 differs significantly from UTC, and thus from the time provided by normal,
101 - Since smeared time differs from true UTC, and many applications require
102 correct legal time (UTC), there may be legal consequences to using smeared
106 the same time and a temporary offset of up to 1 s to UTC is acceptable, a
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H A Ddeps-ver1 Mon Jan 16 09:26:08 UTC 2023
/freebsd/contrib/tnftp/
H A DChangeLog3 Tue Jan 12 06:58:15 UTC 2010 lukem
9 Tue Jan 5 09:12:01 UTC 2010 lukem
17 Mon Jan 4 06:28:07 UTC 2010 lukem
22 Wed Dec 30 00:12:47 UTC 2009 lukem
26 Sun Nov 15 10:14:44 UTC 2009 lukem
33 Sat Nov 14 09:21:19 UTC 2009 lukem
37 Sat Jun 6 07:17:38 UTC 2009 lukem
41 Fri May 22 01:11:15 UTC 2009 lukem
49 Wed May 20 13:47:43 UTC 2009 lukem
90 Sat Dec 20 15:28:24 UTC 2008 lukem
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/freebsd/contrib/ntp/scripts/stats/
H A DREADME.stats22 30.756 time of day (s) past midnight UTC
39 11.897 time of day (s) past midnight UTC
58 60517.826 time of day (s) past midnight UTC
209 UTC PPS/PPM alignment (must be "UTC")
227 UTC leap-second information
232 49234 60548.847 127.127.10.1 93:247:16:48:52.818 UTC
/freebsd/usr.sbin/bsdconfig/timezone/include/
H A Dmessages.subr36 continent_utc_title="UTC"
60 msg_is_machine_clock_utc="Is the machine's CMOS clock set to UTC? If it is set to local time,\nor y…
69 msg_select_local_or_utc="Select local or UTC (Greenwhich Mean Time) clock"
/freebsd/contrib/file/src/
H A Dcdf_time.c103 file_private char UTC[] = "UTC"; in cdf_timestamp_to_timespec() local
134 tm.tm_zone = UTC; in cdf_timestamp_to_timespec()
/freebsd/bin/date/tests/
H A Dformat_string_test.sh150 format_string_test Z Z UTC UTC
/freebsd/sbin/camcontrol/
H A Dtimestamp.c60 #define UTC "utc" macro
270 if (strcmp(format_string, UTC) == 0) { in set_timestamp()
480 format_string = strdup(UTC); in timestamp()
/freebsd/contrib/ntp/sntp/
H A Ddeps-ver1 Mon Jan 16 09:26:08 UTC 2023
H A Dsntp.texi53 By default, @code{sntp} writes the local data and time (i.e., not UTC) to the
62 …ezone adjustment (so we would add 8 hours and 0 minutes to convert the reported local time to UTC),
/freebsd/contrib/ntp/ntpd/
H A Dkeyword-gen-utd1 * Generated 2023-09-25 05:34:02 UTC diff_ignore_line
/freebsd/contrib/ntp/ntpdc/
H A Dntpdc.texi53 By default, @code{ntpdc} writes the local data and time (i.e., not UTC) to the
62 …ezone adjustment (so we would add 8 hours and 0 minutes to convert the reported local time to UTC),
/freebsd/contrib/libxo/tests/gettext/saved/
H A Dgt_01.T.out13 Ersionvay Tue Jun 23 18:47:09 UTC 2015 1.2.3
H A Dgt_01.J.out1 …21,"time":32,"marzlevanes":3,"version":"1.2.3","date":"Tue Jun 23 18:47:09 UTC 2015", "__warning":…
H A Dgt_01.JP.out35 "date": "Tue Jun 23 18:47:09 UTC 2015",

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