1454249adSAndy Fiddaman# tzdb data for ships at sea and other miscellany 2454249adSAndy Fiddaman 35d0e1406SMarcel Telka# This file is in the public domain, so clarified as of 45d0e1406SMarcel Telka# 2009-05-17 by Arthur David Olson. 55d0e1406SMarcel Telka 6c5580037SRobert Mustacchi# These entries are for uses not otherwise covered by the tz database. 7c5580037SRobert Mustacchi# Their main practical use is for platforms like Android that lack 8c5580037SRobert Mustacchi# support for POSIX-style TZ strings. On such platforms these entries 9c5580037SRobert Mustacchi# can be useful if the timezone database is wrong or if a ship or 10c5580037SRobert Mustacchi# aircraft at sea is not in a timezone. 115d0e1406SMarcel Telka 125d0e1406SMarcel Telka# Starting with POSIX 1003.1-2001, the entries below are all 135d0e1406SMarcel Telka# unnecessary as settings for the TZ environment variable. E.g., 145d0e1406SMarcel Telka# instead of TZ='Etc/GMT+4' one can use the POSIX setting TZ='<-04>+4'. 155d0e1406SMarcel Telka# 165d0e1406SMarcel Telka# Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours 175d0e1406SMarcel Telka# behind GMT but uses the completely misleading abbreviation "GMT". 185d0e1406SMarcel Telka 19639e6f6dSAndy Fiddaman# The following zone is used by tzcode functions like gmtime, 20639e6f6dSAndy Fiddaman# which load the "UTC" file to handle seconds properly. 215d0e1406SMarcel TelkaZone Etc/UTC 0 - UTC 225d0e1406SMarcel Telka 23*15753a0cSRobert Mustacchi# Functions like gmtime load the "GMT" file to handle leap seconds properly. 24*15753a0cSRobert Mustacchi# Vanguard section, which works with most .zi parsers. 25*15753a0cSRobert Mustacchi#Zone GMT 0 - GMT 26*15753a0cSRobert Mustacchi# Rearguard section, for TZUpdater 2.3.2 and earlier. 27*15753a0cSRobert MustacchiZone Etc/GMT 0 - GMT 28*15753a0cSRobert Mustacchi 295d0e1406SMarcel Telka# The following link uses older naming conventions, 305d0e1406SMarcel Telka# but it belongs here, not in the file 'backward', 31639e6f6dSAndy Fiddaman# as it is needed for tzcode releases through 2022a, 32639e6f6dSAndy Fiddaman# where functions like gmtime load "GMT" instead of the "Etc/UTC". 33639e6f6dSAndy Fiddaman# We want this to work even on installations that omit 'backward'. 345d0e1406SMarcel TelkaLink Etc/GMT GMT 35*15753a0cSRobert Mustacchi# End of rearguard section. 365d0e1406SMarcel Telka 375d0e1406SMarcel Telka# Be consistent with POSIX TZ settings in the Zone names, 385d0e1406SMarcel Telka# even though this is the opposite of what many people expect. 395d0e1406SMarcel Telka# POSIX has positive signs west of Greenwich, but many people expect 405d0e1406SMarcel Telka# positive signs east of Greenwich. For example, TZ='Etc/GMT+4' uses 415d0e1406SMarcel Telka# the abbreviation "-04" and corresponds to 4 hours behind UT 425d0e1406SMarcel Telka# (i.e. west of Greenwich) even though many people would expect it to 435d0e1406SMarcel Telka# mean 4 hours ahead of UT (i.e. east of Greenwich). 445d0e1406SMarcel Telka 455d0e1406SMarcel Telka# Earlier incarnations of this package were not POSIX-compliant, 465d0e1406SMarcel Telka# and had lines such as 475d0e1406SMarcel Telka# Zone GMT-12 -12 - GMT-1200 485d0e1406SMarcel Telka# We did not want things to change quietly if someone accustomed to the old 495d0e1406SMarcel Telka# way does a 505d0e1406SMarcel Telka# zic -l GMT-12 515d0e1406SMarcel Telka# so we moved the names into the Etc subdirectory. 525d0e1406SMarcel Telka# Also, the time zone abbreviations are now compatible with %z. 535d0e1406SMarcel Telka 545d0e1406SMarcel TelkaZone Etc/GMT-14 14 - +14 555d0e1406SMarcel TelkaZone Etc/GMT-13 13 - +13 565d0e1406SMarcel TelkaZone Etc/GMT-12 12 - +12 575d0e1406SMarcel TelkaZone Etc/GMT-11 11 - +11 585d0e1406SMarcel TelkaZone Etc/GMT-10 10 - +10 595d0e1406SMarcel TelkaZone Etc/GMT-9 9 - +09 605d0e1406SMarcel TelkaZone Etc/GMT-8 8 - +08 615d0e1406SMarcel TelkaZone Etc/GMT-7 7 - +07 625d0e1406SMarcel TelkaZone Etc/GMT-6 6 - +06 635d0e1406SMarcel TelkaZone Etc/GMT-5 5 - +05 645d0e1406SMarcel TelkaZone Etc/GMT-4 4 - +04 655d0e1406SMarcel TelkaZone Etc/GMT-3 3 - +03 665d0e1406SMarcel TelkaZone Etc/GMT-2 2 - +02 675d0e1406SMarcel TelkaZone Etc/GMT-1 1 - +01 685d0e1406SMarcel TelkaZone Etc/GMT+1 -1 - -01 695d0e1406SMarcel TelkaZone Etc/GMT+2 -2 - -02 705d0e1406SMarcel TelkaZone Etc/GMT+3 -3 - -03 715d0e1406SMarcel TelkaZone Etc/GMT+4 -4 - -04 725d0e1406SMarcel TelkaZone Etc/GMT+5 -5 - -05 735d0e1406SMarcel TelkaZone Etc/GMT+6 -6 - -06 745d0e1406SMarcel TelkaZone Etc/GMT+7 -7 - -07 755d0e1406SMarcel TelkaZone Etc/GMT+8 -8 - -08 765d0e1406SMarcel TelkaZone Etc/GMT+9 -9 - -09 775d0e1406SMarcel TelkaZone Etc/GMT+10 -10 - -10 785d0e1406SMarcel TelkaZone Etc/GMT+11 -11 - -11 795d0e1406SMarcel TelkaZone Etc/GMT+12 -12 - -12 80