b48b4f4d3b
It's trivial to do - and done when generating our compiled data tables, so makes no difference to users - but makes the offset list table simpler. Reformat the list so that the fragment-of-hour offsets are clearly distinguished from the whole-hour ones. Change-Id: I6e0ea23dc317542b3256e88492e4073faedef1d7 Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
228 lines
10 KiB
Python
228 lines
10 KiB
Python
# Copyright (C) 2024 The Qt Company Ltd.
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# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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"""Data relating to timezones and CLDR.
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This is not implicated in public APIs, so may safely be changed.
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Contrast the enumdata.py, where public API is implicated.
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Scripts digesting CLDR data shall report the updates you need to make,
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if any arise.
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The windowsIdList is a list of twoples (ID, offset), associating each
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Windows-specific ID for a zone with that zone's offset from UTC, in
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seconds. Entries are sorted in case-insensitive lexical order by
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ID. If a script reports that it has found a Windows ID not listed
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here, research the relevant zone's offset and add a new entry to the
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list of twoples, preserving the ordering. Internet search engines and
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timeanddate.com can help with researching the offset. Note that some
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UTC offset zones (giving only the hour) are present in windowsIdList.
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When adding an entry to windowsIdList, check whether its offset
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corresponds to that of some entry in utcIdList; if not, add such an
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entry.
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The utcIdList is a simple list of various UTC-offset names. Aside from
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'UTC' itself, shared with windowsIdList, these include minutes in
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their offsets even when they are whole hour offsets. The list contains
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the UTC-equivalents of all offsets seen in the windowsIdList, plus the
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whole hours out to ±14 hours, the two verbose forms of UTC±00:00 and
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any legacy entries from past Windows zone offsets. Entries should not
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be removed, even if the relevant Windows ID becomes obsolete or
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switches to a different offset, as they make up the available zones of
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the UTC back-end. (That recognizes other offset zones, and its
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is-available check will accept them, but it leaves them out of its
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list. There are, after all, thousands of possible offset zones, but
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relatively few are widely used.)
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Note: -00:00 (without the UTC prefix) was introduced in RFC3339 as a
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way to indicate that a date-time has been converted to UTC but its use
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should not be understood to say anything about the local time of the
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origin of the message using it. However, ISO 8601 has, since 2000,
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forbidden this as an offset suffix. The more recent compromise is to
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use Z to convey the meaning RFC3339 gave to -00:00. So the use of
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-00:00 as offset suffix should be avoided (and, by extension, likewise
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for UTC-00:00 as a zone ID), but this suffix (and ID) should be
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recognized when consuming data generated by other sources, for
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backwards compatibility.
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"""
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# Do not remove IDs, as each entry is part of the API/behavior guarantee.
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# IDs for the same offset shall be space-joined; list the preferred ID first.
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utcIdList = (
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'UTC-14:00',
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'UTC-13:00',
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'UTC-12:00',
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'UTC-11:00',
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'UTC-10:00', 'UTC-09:30',
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'UTC-09:00',
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'UTC-08:00',
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'UTC-07:00',
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'UTC-06:00',
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'UTC-05:00', 'UTC-04:30',
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'UTC-04:00', 'UTC-03:30',
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'UTC-03:00',
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'UTC-02:00',
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'UTC-01:00',
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# UTC Goes first (among zero-offset) to be default:
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'UTC', 'UTC+00:00', 'UTC-00:00',
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'UTC+01:00',
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'UTC+02:00',
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'UTC+03:00', 'UTC+03:30',
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'UTC+04:00', 'UTC+04:30',
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'UTC+05:00', 'UTC+05:30', 'UTC+05:45',
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'UTC+06:00', 'UTC+06:30',
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'UTC+07:00',
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'UTC+08:00', 'UTC+08:30', 'UTC+08:45',
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'UTC+09:00', 'UTC+09:30',
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'UTC+10:00', 'UTC+10:30',
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'UTC+11:00',
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'UTC+12:00', 'UTC+12:45',
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'UTC+13:00',
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'UTC+14:00',
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)
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# ( Windows Id, Offset Seconds )
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windowsIdList = (
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('Afghanistan Standard Time', 16200),
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('Alaskan Standard Time', -32400),
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('Aleutian Standard Time', -36000),
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('Altai Standard Time', 25200),
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('Arab Standard Time', 10800),
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('Arabian Standard Time', 14400),
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('Arabic Standard Time', 10800),
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('Argentina Standard Time', -10800),
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('Astrakhan Standard Time', 14400),
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('Atlantic Standard Time', -14400),
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('AUS Central Standard Time', 34200),
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('Aus Central W. Standard Time', 31500),
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('AUS Eastern Standard Time', 36000),
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('Azerbaijan Standard Time', 14400),
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('Azores Standard Time', -3600),
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('Bahia Standard Time', -10800),
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('Bangladesh Standard Time', 21600),
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('Belarus Standard Time', 10800),
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('Bougainville Standard Time', 39600),
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('Canada Central Standard Time', -21600),
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('Cape Verde Standard Time', -3600),
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('Caucasus Standard Time', 14400),
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('Cen. Australia Standard Time', 34200),
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('Central America Standard Time', -21600),
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('Central Asia Standard Time', 21600),
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('Central Brazilian Standard Time', -14400),
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('Central Europe Standard Time', 3600),
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('Central European Standard Time', 3600),
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('Central Pacific Standard Time', 39600),
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('Central Standard Time', -21600),
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('Central Standard Time (Mexico)', -21600),
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('Chatham Islands Standard Time', 45900),
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('China Standard Time', 28800),
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('Cuba Standard Time', -18000),
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('Dateline Standard Time', -43200),
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('E. Africa Standard Time', 10800),
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('E. Australia Standard Time', 36000),
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('E. Europe Standard Time', 7200),
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('E. South America Standard Time', -10800),
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('Easter Island Standard Time', -21600),
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('Eastern Standard Time', -18000),
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('Eastern Standard Time (Mexico)', -18000),
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('Egypt Standard Time', 7200),
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('Ekaterinburg Standard Time', 18000),
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('Fiji Standard Time', 43200),
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('FLE Standard Time', 7200),
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('Georgian Standard Time', 14400),
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('GMT Standard Time', 0),
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('Greenland Standard Time', -10800),
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('Greenwich Standard Time', 0),
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('GTB Standard Time', 7200),
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('Haiti Standard Time', -18000),
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('Hawaiian Standard Time', -36000),
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('India Standard Time', 19800),
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('Iran Standard Time', 12600),
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('Israel Standard Time', 7200),
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('Jordan Standard Time', 7200),
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('Kaliningrad Standard Time', 7200),
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('Korea Standard Time', 32400),
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('Libya Standard Time', 7200),
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('Line Islands Standard Time', 50400),
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('Lord Howe Standard Time', 37800),
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('Magadan Standard Time', 36000),
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('Magallanes Standard Time', -10800), # permanent DST
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('Marquesas Standard Time', -34200),
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('Mauritius Standard Time', 14400),
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('Middle East Standard Time', 7200),
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('Montevideo Standard Time', -10800),
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('Morocco Standard Time', 0),
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('Mountain Standard Time', -25200),
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('Mountain Standard Time (Mexico)', -25200),
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('Myanmar Standard Time', 23400),
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('N. Central Asia Standard Time', 21600),
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('Namibia Standard Time', 3600),
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('Nepal Standard Time', 20700),
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('New Zealand Standard Time', 43200),
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('Newfoundland Standard Time', -12600),
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('Norfolk Standard Time', 39600),
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('North Asia East Standard Time', 28800),
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('North Asia Standard Time', 25200),
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('North Korea Standard Time', 30600),
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('Omsk Standard Time', 21600),
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('Pacific SA Standard Time', -10800),
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('Pacific Standard Time', -28800),
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('Pacific Standard Time (Mexico)', -28800),
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('Pakistan Standard Time', 18000),
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('Paraguay Standard Time', -14400),
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('Qyzylorda Standard Time', 18000), # a.k.a. Kyzylorda, in Kazakhstan
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('Romance Standard Time', 3600),
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('Russia Time Zone 10', 39600),
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('Russia Time Zone 11', 43200),
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('Russia Time Zone 3', 14400),
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('Russian Standard Time', 10800),
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('SA Eastern Standard Time', -10800),
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('SA Pacific Standard Time', -18000),
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('SA Western Standard Time', -14400),
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('Saint Pierre Standard Time', -10800), # New France
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('Sakhalin Standard Time', 39600),
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('Samoa Standard Time', 46800),
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('Sao Tome Standard Time', 0),
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('Saratov Standard Time', 14400),
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('SE Asia Standard Time', 25200),
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('Singapore Standard Time', 28800),
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('South Africa Standard Time', 7200),
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('South Sudan Standard Time', 7200),
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('Sri Lanka Standard Time', 19800),
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('Sudan Standard Time', 7200), # unless they mean South Sudan, +03:00
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('Syria Standard Time', 7200),
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('Taipei Standard Time', 28800),
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('Tasmania Standard Time', 36000),
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('Tocantins Standard Time', -10800),
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('Tokyo Standard Time', 32400),
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('Tomsk Standard Time', 25200),
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('Tonga Standard Time', 46800),
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('Transbaikal Standard Time', 32400), # Yakutsk
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('Turkey Standard Time', 7200),
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('Turks And Caicos Standard Time', -14400),
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('Ulaanbaatar Standard Time', 28800),
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('US Eastern Standard Time', -18000),
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('US Mountain Standard Time', -25200),
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('UTC', 0),
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# Lexical order: '+' < '-'
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('UTC+12', 43200),
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('UTC+13', 46800),
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('UTC-02', -7200),
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('UTC-08', -28800),
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('UTC-09', -32400),
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('UTC-11', -39600),
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('Venezuela Standard Time', -16200),
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('Vladivostok Standard Time', 36000),
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('Volgograd Standard Time', 14400),
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('W. Australia Standard Time', 28800),
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('W. Central Africa Standard Time', 3600),
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('W. Europe Standard Time', 3600),
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('W. Mongolia Standard Time', 25200), # Hovd
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('West Asia Standard Time', 18000),
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('West Bank Standard Time', 7200),
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('West Pacific Standard Time', 36000),
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('Yakutsk Standard Time', 32400),
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('Yukon Standard Time', -25200), # Non-DST Mountain Standard Time since 2020-11-01
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)
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