105e627dcSAndy Fiddaman# tzdb data for ships at sea and other miscellany 205e627dcSAndy Fiddaman 3707182d7SNobutomo Nakano# This file is in the public domain, so clarified as of 4707182d7SNobutomo Nakano# 2009-05-17 by Arthur David Olson. 57c478bd9Sstevel@tonic-gate 6f915e6d3SRobert Mustacchi# These entries are for uses not otherwise covered by the tz database. 7f915e6d3SRobert Mustacchi# Their main practical use is for platforms like Android that lack 8*e15592c8SRobert Mustacchi# support for POSIX.1-2017-style TZ strings. On such platforms these entries 9f915e6d3SRobert Mustacchi# can be useful if the timezone database is wrong or if a ship or 10f915e6d3SRobert Mustacchi# aircraft at sea is not in a timezone. 117c478bd9Sstevel@tonic-gate 12c2d5ab87SDan McDonald# Starting with POSIX 1003.1-2001, the entries below are all 13c2d5ab87SDan McDonald# unnecessary as settings for the TZ environment variable. E.g., 14c2d5ab87SDan McDonald# instead of TZ='Etc/GMT+4' one can use the POSIX setting TZ='<-04>+4'. 15c2d5ab87SDan McDonald# 16c2d5ab87SDan McDonald# Do not use a POSIX TZ setting like TZ='GMT+4', which is four hours 17c2d5ab87SDan McDonald# behind GMT but uses the completely misleading abbreviation "GMT". 18c2d5ab87SDan McDonald 19427b4c5cSAndy Fiddaman# The following zone is used by tzcode functions like gmtime, 20427b4c5cSAndy Fiddaman# which load the "UTC" file to handle seconds properly. 217c478bd9Sstevel@tonic-gateZone Etc/UTC 0 - UTC 227c478bd9Sstevel@tonic-gate 23f117aa50SRobert Mustacchi# Functions like gmtime load the "GMT" file to handle leap seconds properly. 24f117aa50SRobert Mustacchi# Vanguard section, which works with most .zi parsers. 25f117aa50SRobert Mustacchi#Zone GMT 0 - GMT 26f117aa50SRobert Mustacchi# Rearguard section, for TZUpdater 2.3.2 and earlier. 27f117aa50SRobert MustacchiZone Etc/GMT 0 - GMT 28f117aa50SRobert Mustacchi 297c478bd9Sstevel@tonic-gate# The following link uses older naming conventions, 306f8e8937SDan McDonald# but it belongs here, not in the file 'backward', 31427b4c5cSAndy Fiddaman# as it is needed for tzcode releases through 2022a, 32427b4c5cSAndy Fiddaman# where functions like gmtime load "GMT" instead of the "Etc/UTC". 33427b4c5cSAndy Fiddaman# We want this to work even on installations that omit 'backward'. 347c478bd9Sstevel@tonic-gateLink Etc/GMT GMT 35f117aa50SRobert Mustacchi# End of rearguard section. 367c478bd9Sstevel@tonic-gate 37c2d5ab87SDan McDonald# Be consistent with POSIX TZ settings in the Zone names, 387c478bd9Sstevel@tonic-gate# even though this is the opposite of what many people expect. 397c478bd9Sstevel@tonic-gate# POSIX has positive signs west of Greenwich, but many people expect 407c478bd9Sstevel@tonic-gate# positive signs east of Greenwich. For example, TZ='Etc/GMT+4' uses 41c2d5ab87SDan McDonald# the abbreviation "-04" and corresponds to 4 hours behind UT 427c478bd9Sstevel@tonic-gate# (i.e. west of Greenwich) even though many people would expect it to 43a43ba736SRobert Mustacchi# mean 4 hours ahead of UT (i.e. east of Greenwich). 447c478bd9Sstevel@tonic-gate 457c478bd9Sstevel@tonic-gate# Earlier incarnations of this package were not POSIX-compliant, 467c478bd9Sstevel@tonic-gate# and had lines such as 477c478bd9Sstevel@tonic-gate# Zone GMT-12 -12 - GMT-1200 487c478bd9Sstevel@tonic-gate# We did not want things to change quietly if someone accustomed to the old 497c478bd9Sstevel@tonic-gate# way does a 507c478bd9Sstevel@tonic-gate# zic -l GMT-12 517c478bd9Sstevel@tonic-gate# so we moved the names into the Etc subdirectory. 52c2d5ab87SDan McDonald# Also, the time zone abbreviations are now compatible with %z. 537c478bd9Sstevel@tonic-gate 54c2d5ab87SDan McDonaldZone Etc/GMT-14 14 - +14 55c2d5ab87SDan McDonaldZone Etc/GMT-13 13 - +13 56c2d5ab87SDan McDonaldZone Etc/GMT-12 12 - +12 57c2d5ab87SDan McDonaldZone Etc/GMT-11 11 - +11 58c2d5ab87SDan McDonaldZone Etc/GMT-10 10 - +10 59c2d5ab87SDan McDonaldZone Etc/GMT-9 9 - +09 60c2d5ab87SDan McDonaldZone Etc/GMT-8 8 - +08 61c2d5ab87SDan McDonaldZone Etc/GMT-7 7 - +07 62c2d5ab87SDan McDonaldZone Etc/GMT-6 6 - +06 63c2d5ab87SDan McDonaldZone Etc/GMT-5 5 - +05 64c2d5ab87SDan McDonaldZone Etc/GMT-4 4 - +04 65c2d5ab87SDan McDonaldZone Etc/GMT-3 3 - +03 66c2d5ab87SDan McDonaldZone Etc/GMT-2 2 - +02 67c2d5ab87SDan McDonaldZone Etc/GMT-1 1 - +01 68c2d5ab87SDan McDonaldZone Etc/GMT+1 -1 - -01 69c2d5ab87SDan McDonaldZone Etc/GMT+2 -2 - -02 70c2d5ab87SDan McDonaldZone Etc/GMT+3 -3 - -03 71c2d5ab87SDan McDonaldZone Etc/GMT+4 -4 - -04 72c2d5ab87SDan McDonaldZone Etc/GMT+5 -5 - -05 73c2d5ab87SDan McDonaldZone Etc/GMT+6 -6 - -06 74c2d5ab87SDan McDonaldZone Etc/GMT+7 -7 - -07 75c2d5ab87SDan McDonaldZone Etc/GMT+8 -8 - -08 76c2d5ab87SDan McDonaldZone Etc/GMT+9 -9 - -09 77c2d5ab87SDan McDonaldZone Etc/GMT+10 -10 - -10 78c2d5ab87SDan McDonaldZone Etc/GMT+11 -11 - -11 79c2d5ab87SDan McDonaldZone Etc/GMT+12 -12 - -12 80