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In several places the code and documentation incorrectly used "UTC" to describe time stamps that might precede the introduction of UTC and for which UTC is therefore undefined. Change these uses to "UT", as that's the correct term when talking about these time stamps. Problem reported by Steve Allen in <http://mm.icann.org/pipermail/tz/2013-September/019907.html>. The major compatibility issue here is with 'zdump -v'; it'll now output "UT" instead of the possibly-incorrect "UTC". Many files change in minor ways in the commentary. * zdump.c (show): * zic.c (inzsub, addtype): In output, say "UT" rather than "UTC", since the time stamp we're talking about might precede the introduction of UTC.
82 lines
2.9 KiB
Plaintext
82 lines
2.9 KiB
Plaintext
# <pre>
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# This file is in the public domain, so clarified as of
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# 2009-05-17 by Arthur David Olson.
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# These entries are mostly present for historical reasons, so that
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# people in areas not otherwise covered by the tz files could "zic -l"
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# to a time zone that was right for their area. These days, the
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# tz files cover almost all the inhabited world, and the only practical
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# need now for the entries that are not on UTC are for ships at sea
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# that cannot use POSIX TZ settings.
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Zone Etc/GMT 0 - GMT
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Zone Etc/UTC 0 - UTC
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Zone Etc/UCT 0 - UCT
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# The following link uses older naming conventions,
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# but it belongs here, not in the file `backward',
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# as functions like gmtime load the "GMT" file to handle leap seconds properly.
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# We want this to work even on installations that omit the other older names.
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Link Etc/GMT GMT
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Link Etc/UTC Etc/Universal
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Link Etc/UTC Etc/Zulu
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Link Etc/GMT Etc/Greenwich
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Link Etc/GMT Etc/GMT-0
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Link Etc/GMT Etc/GMT+0
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Link Etc/GMT Etc/GMT0
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# We use POSIX-style signs in the Zone names and the output abbreviations,
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# even though this is the opposite of what many people expect.
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# POSIX has positive signs west of Greenwich, but many people expect
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# positive signs east of Greenwich. For example, TZ='Etc/GMT+4' uses
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# the abbreviation "GMT+4" and corresponds to 4 hours behind UT
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# (i.e. west of Greenwich) even though many people would expect it to
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# mean 4 hours ahead of UT (i.e. east of Greenwich).
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#
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# In the draft 5 of POSIX 1003.1-200x, the angle bracket notation allows for
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# TZ='<GMT-4>+4'; if you want time zone abbreviations conforming to
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# ISO 8601 you can use TZ='<-0400>+4'. Thus the commonly-expected
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# offset is kept within the angle bracket (and is used for display)
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# while the POSIX sign is kept outside the angle bracket (and is used
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# for calculation).
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#
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# Do not use a TZ setting like TZ='GMT+4', which is four hours behind
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# GMT but uses the completely misleading abbreviation "GMT".
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# Earlier incarnations of this package were not POSIX-compliant,
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# and had lines such as
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# Zone GMT-12 -12 - GMT-1200
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# We did not want things to change quietly if someone accustomed to the old
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# way does a
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# zic -l GMT-12
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# so we moved the names into the Etc subdirectory.
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Zone Etc/GMT-14 14 - GMT-14 # 14 hours ahead of GMT
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Zone Etc/GMT-13 13 - GMT-13
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Zone Etc/GMT-12 12 - GMT-12
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Zone Etc/GMT-11 11 - GMT-11
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Zone Etc/GMT-10 10 - GMT-10
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Zone Etc/GMT-9 9 - GMT-9
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Zone Etc/GMT-8 8 - GMT-8
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Zone Etc/GMT-7 7 - GMT-7
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Zone Etc/GMT-6 6 - GMT-6
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Zone Etc/GMT-5 5 - GMT-5
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Zone Etc/GMT-4 4 - GMT-4
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Zone Etc/GMT-3 3 - GMT-3
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Zone Etc/GMT-2 2 - GMT-2
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Zone Etc/GMT-1 1 - GMT-1
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Zone Etc/GMT+1 -1 - GMT+1
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Zone Etc/GMT+2 -2 - GMT+2
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Zone Etc/GMT+3 -3 - GMT+3
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Zone Etc/GMT+4 -4 - GMT+4
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Zone Etc/GMT+5 -5 - GMT+5
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Zone Etc/GMT+6 -6 - GMT+6
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Zone Etc/GMT+7 -7 - GMT+7
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Zone Etc/GMT+8 -8 - GMT+8
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Zone Etc/GMT+9 -9 - GMT+9
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Zone Etc/GMT+10 -10 - GMT+10
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Zone Etc/GMT+11 -11 - GMT+11
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Zone Etc/GMT+12 -12 - GMT+12
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