- tz - lists.iana.org

2011-09-17 reported Siberia bug
by Tobias Conradi Aug. 5, 2014

Aug. 5, 2014

http://article.gmane.org/gmane.comp.time.tz/4872/match=siberia Still open. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Large scale changes proposed in 2014f
by Stephen Colebourne Aug. 5, 2014

Aug. 5, 2014

I believe that the changes currently proposed are far far too widespread and damaging. I have taken the latest in the GitHub repo and expanded them out into actual resolved results. The differences between 2014e and 2014f-proposed can be seen here: https://github.com/jodastephen/tzdiff/commit/c812da9e12bd6f8aa52fa2dd758e23… (other version differences available here: https://github.com/jodastephen/tzdiff/commits/proposed-2014f) As can be seen from the first link, the changes proposed are very widespread. they include - Africa/Accra gains DST between 1920 and 1935 - Africa/Freetown loses its entire history of DST - Africa/Kampala has very different DST history - Africa/Dar_es_Salaam has entirely different history before 1961 - Africa/Djibouti gains history before 1960 - Africa/Addis_Ababa has completely different history before 1960 - Africa/Asmara has completely different history before 1960 - Africa/Conakry loses history before 1960 - Africa/Banjul loses history before 1964 - Africa/Maseru gains DST history - Africa/Mbabane gains DST history - Africa/Mogadishu gains completely different DST history and many others with more minor changes. I'd also note that Ho_Chi_Minh, Kashgar, Saigon, Vientiane and Phnom_Penh lose their entire history The changes to Asia/Qatar and Asia/Kuwait look suspect. Asia/Urumqi loses its entire history. Indian/Antananarivo, Comoro and Mayotte get entirely different DST history. Pacific/Midway, Pago_Pago, Saipan, Samoa get entirely different DST history. The above is an attempt to summarise some but not all of the changes. I am far from convinced that the scale of the proposed changes (far bigger than even 2013e) have been anywhere near justified. Is there consensus on the list that all of these changes are better than what went before? Stephen On 16 July 2014 06:40, Paul Eggert <eggert(a)cs.ucla.edu> wrote: > Paul Eggert wrote: >> >> Alan Barrett wrote: >>> >>> To the best of my knowledge, most other African countries that share the >>> same UTC offset do not use the abbreviation "SAST" >> >> >> Thanks for catching this; this was indeed an error in the merge, and >> I'll prepare a patch shortly that reverts to the previous behavior here >> as well. > > > By "most other African countries" I expect you meant the same set of > countries that use "CAT" rather than "SAST" in Release 2014e. > > Anyway, the revised patch turned into more research than I expected, but I > finally came up with the attached proposal. This patch fixes the problem > you noted, along with the other specific problems noted, though it does > still turn some zones into links when there's no good evidence for the > zones' differences. > > I hope I correctly puzzled out Google Translate's mangling of Hungarian for > the fixes to Hungarian daylight saving time rules in 1918-1945. Oross's work > has facsimiles of the original material! If only our other sources were as > meticulous....

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Corroborating material
by Lester Caine Aug. 4, 2014

Aug. 4, 2014

I'm going to try and get a bit of time in on http://timedb.co.uk/ and I'd appreciate any material people have relating to historic timezone data ... -- Lester Caine - G8HFL ----------------------------- Contact - http://lsces.co.uk/wiki/?page=contact L.S.Caine Electronic Services - http://lsces.co.uk EnquirySolve - http://enquirysolve.com/ Model Engineers Digital Workshop - http://medw.co.uk Rainbow Digital Media - http://rainbowdigitalmedia.co.uk

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Fwd: Proposal to rename zone.tab to region.tab
by Tobias Conradi July 31, 2014

July 31, 2014

Retry, this didn't go through 2013-09-15, due to blocking by the time zone mailing list maintainer. ---------- Forwarded message ---------- From: Tobias Conradi <mail.2012(a)tobiasconradi.com> Date: Sun, Sep 15, 2013 at 12:29 PM Subject: Proposal to rename zone.tab to region.tab To: "tz(a)iana.org mailing list" <tz(a)iana.org> Proposal to rename ftp://ftp.iana.org/tz/data/zone.tab to ftp://ftp.iana.org/tz/data/region.tab Reason: ftp://ftp.iana.org/tz/code/Theory says ----- Scope of the tz database ----- ... To represent this data, the world is partitioned into regions .... For each such region, the database records all known clock transitions, and labels the region ...... Uniquely identify every national region .... Indicate to humans as to where that region is. .... is the name of a specific location within that region. ..... Uninhabited regions like ..... If all the clocks in a region have agreed since 1970, .... even if subregions' clocks disagreed before 1970. ...... Use cities or small islands, not countries or regions, [! other meaning] ..... The file `zone.tab' lists the geographical locations used to name time zone rule files. It is intended to be an exhaustive list of names for geographic regions as described above. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Proposal: Use Git and Github better
by Matt Johnson July 31, 2014

July 31, 2014

I think it's great that we're using Git and Github as the experimental / unofficial repository at https://github.com/eggert/tz. It's much easier to track change history looking through the commit log and see the changes than by reading through emails with patch attachments. However, we're not currently taking advantage of all that this environment has to offer. -- Item 1 -- We should be making better use of branches. We currently have a single "master" branch that everything gets committed to. This is problematic, because it doesn't separate things that are certain to be released from things that are proposed changes. For example, the recent time.tab file, and the other large-scale proposed changes that are currently being debated, could have been created on feature branches. This would have given the tz list members a place to look at the proposed changes and make additional suggestions (via pull requests) before things are finalized. As it sits today, since everything is in master, if the proposal is ultimately defeated then new commits will have to be made to master to revert these changes. The danger comes if, say we needed to issue an emergency release sometime in between. Since master isn't in a state of positive agreement, then one would have to branch from an earlier point in history to build a hotfix release, then merge that hotfix back to master later. It's much easier if we can just trust that master always consists of things that are certain to be released. See also: https://www.atlassian.com/git/workflows#!workflow-feature-branch http://www.git-scm.com/book/en/Git-Branching-Basic-Branching-and-Merging -- Item 2 -- I think that we should all make better use of forking and pull-requests for submitting proposed changes. Instead of submitting a patch file to the mailing list, one should fork the GitHub repo, make their changes, then create a pull request. This allows for place for discussion on proposals where the code can be referenced much easier. It also ensures that the author of each and every change is tracked in the commit log. And finally, it makes it much clearer which proposals were adopted and which were not. Presently, looking through the mailing list archives, it's quite difficult to tell if any given patch was actually applied or not. -- Item 3 -- We should decide how the GitHub issue tracker fits in to the ecosystem. I see that there have been a few issues reported to via the issue tracker in the past, but most things have come through the mailing list. If we adopt the conventions used by other modern projects, then we should be reporting bugs through the issue tracker so their history can be more easily found. Another benefit is that you can reference issue numbers in commits, and you can reference commits in the comments of an issue. This linking makes it quite easy to find the code or data that was changed in response to an issue. The mailing list should probably be used for extended discussion, rather than as a place to report issues. Though, there may be some blend of both, I personally think that an issue tracker is much more palatable than a mailing list for many of these kinds of things. There should probably be some guidance document on the iana tz page about what goes where. -- Item 4 -- While Paul Eggert is the tz maintainer, and I appreciate his efforts greatly, I personally don't feel that it's appropriate for the github repo to be in his personal "eggert" account. There should instead be a common "organizational account" for the project, such as github.com/tzdb or similar. ("iana" is taken, but appears to be unused or abandonded. Someone may want to inquire about obtaining it, as "github.com/iana/tz" would be quite appropriate IMHO). Though Paul would be the administrator of this account, his own personal account would no longer be authoritative. That also ties back to the idea of pull-requests. Since Paul makes the majority of changes, he would first make them in his own account, and then send a pull-request to the main account. Then a link could be sent to the mailing list for discussion on the pull request before it was merged in. As a side note - I've found that several third-party projects are linking to the unofficial sources using git submodules. While this isn't officially sanctioned, it would be much better if they could link to iana/tz instead of eggert/tz. -- Item 5 -- While code and data often go hand-in-hand, there are quite a lot of projects these days that only rely on the tz data. There are also a lot of releases of code changes that don't require data changes. Having both code and data in a single project seems rather inefficient. I propose that they be split back to separate projects, and maintained in separate github repos (tzdata / tzcode). Also, consider also that perhaps there are too many merged projects just within the code. For example, tzselect, zic, zdump, etc. might be broken out for better visibility of changes and for clarity of dependent files. I look forward to feedback on these items. I'm sure not all will be in agreement, but I think it's important that we look forward to new and better ways to manage this project - rather than just sticking with the ways of the past. -Matt

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Canada/East-Saskatchewan
by Eric Muller July 31, 2014

July 31, 2014

The file backward contains those two links: Link America/Regina Canada/East-Saskatchewan Link America/Regina Canada/Saskatchewan If I am not mistaken, Saskatchewan can be divided in four areas: - the area around Swift Current, using the rule America/Swift_Current - an area to the west, around Lloydminster, using the rule America/Edmonton - an area to the east, around Denare Beach and Creighton, using the rule America/Winnipeg - the rest of the province, using the rule America/Regina I wonder if Canada/East-Saskatchewan was meant for the area to the east, and should therefore be linked to America/Winnipeg instead? Thanks, Eric.

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Some typo fixes
by Tim Parenti July 31, 2014

July 31, 2014

A few typo fixes attached, along with some fuller sources in tz-art.htm. -- Tim Parenti

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Updating the Efele maps: which names?
by Eric Muller July 27, 2014

July 27, 2014

I am looking at updating the Efele maps (http://efele.net/maps/tz/) primarily to deal with the changes in Russia, and more generally make sure that the maps are in sync with the current/next release of TZ. TZ provides a bunch of zone names, either via a Zone entry or via a Link entry. I am taking this opportunity to make sure that all these names are accounted for, in one of three ways: - names that do not belong to the maps (e.g. Etc/UTC) - names that should have a corresponding area in the maps - names that are aliases for other names I elected to retain the current per-country separations, as I believe it is more appropriate for maps, and more generally to retain the finest granularity possible. Some users may want to merge areas that follow the sames rules, but may have different definition of same rules (e.g. some may want to fold what is not different since 1970, others may want to fold what is not different since last year; some may ignore the FORMAT, some may not), and the finest granularity accommodates the largest number of uses. Here is what I came up with. All the names of TZ are supposed to be present somewhere. Comments welcome. Thanks, Eric. These names will not appear in my maps: --- CET CST6CDT EET EST EST5EDT Etc/GMT Etc/GMT0 Etc/GMT-0 Etc/Greenwich GMT GMT+0 GMT0 GMT-0 Greenwich Etc/GMT+1 Etc/GMT+10 Etc/GMT+11 Etc/GMT+12 Etc/GMT+2 Etc/GMT+3 Etc/GMT+4 Etc/GMT+5 Etc/GMT+6 Etc/GMT+7 Etc/GMT+8 Etc/GMT+9 Etc/GMT-1 Etc/GMT-10 Etc/GMT-11 Etc/GMT-12 Etc/GMT-13 Etc/GMT-14 Etc/GMT-2 Etc/GMT-3 Etc/GMT-4 Etc/GMT-5 Etc/GMT-6 Etc/GMT-7 Etc/GMT-8 Etc/GMT-9 Etc/UCT UCT Etc/UTC Etc/Universal Etc/Zulu Universal UTC Zulu HST MET MST MST7MDT PST8PDT WET ---- Each line below will be a separate area, labelled with the first name in the line. The other names are considered aliases. As before, there will also be areas labeled "uninhabited" or "unknown", and Antarctica will be points rather than areas. ---- Africa/Abidjan Africa/Accra Africa/Addis_Ababa Africa/Algiers Africa/Asmara Africa/Asmera Africa/Bamako Africa/Timbuktu Africa/Bangui Africa/Banjul Africa/Bissau Africa/Blantyre Africa/Brazzaville Africa/Bujumbura Africa/Cairo Egypt Africa/Casablanca Africa/Ceuta Africa/Conakry Africa/Dakar Africa/Dar_es_Salaam Africa/Djibouti Africa/Douala Africa/El_Aaiun Africa/Freetown Africa/Gaborone Africa/Harare Africa/Johannesburg Africa/Juba Africa/Kampala Africa/Khartoum Africa/Kigali Africa/Kinshasa Africa/Lagos Africa/Libreville Africa/Lome Africa/Luanda Africa/Lubumbashi Africa/Lusaka Africa/Malabo Africa/Maputo Africa/Maseru Africa/Mbabane Africa/Mogadishu Africa/Monrovia Africa/Nairobi Africa/Ndjamena Africa/Niamey Africa/Nouakchott Africa/Ouagadougou Africa/Porto-Novo Africa/Sao_Tome Africa/Tripoli Libya Africa/Tunis Africa/Windhoek America/Adak US/Aleutian America/Atka America/Anchorage US/Alaska America/Anguilla America/Antigua America/Araguaina America/Argentina/Buenos_Aires America/Buenos_Aires America/Argentina/Catamarca America/Catamarca America/Argentina/ComodRivadavia America/Argentina/Cordoba America/Cordoba America/Rosario America/Argentina/Jujuy America/Jujuy America/Argentina/La_Rioja America/Argentina/Mendoza America/Mendoza America/Argentina/Rio_Gallegos America/Argentina/Salta America/Argentina/San_Juan America/Argentina/San_Luis America/Argentina/Tucuman America/Argentina/Ushuaia America/Aruba America/Asuncion America/Atikokan America/Bahia America/Bahia_Banderas America/Barbados America/Belem America/Belize America/Blanc-Sablon America/Boa_Vista America/Bogota America/Boise America/Cambridge_Bay America/Campo_Grande America/Cancun America/Caracas America/Cayenne America/Cayman America/Chicago US/Central America/Chihuahua America/Coral_Harbour America/Costa_Rica America/Creston America/Cuiaba America/Curacao America/Danmarkshavn America/Dawson America/Dawson_Creek America/Denver Navajo US/Mountain America/Shiprock America/Detroit US/Michigan America/Dominica America/Edmonton Canada/Mountain America/Eirunepe America/El_Salvador America/Fortaleza America/Glace_Bay America/Godthab America/Goose_Bay America/Grand_Turk America/Grenada America/Guadeloupe America/Guatemala America/Guayaquil America/Guyana America/Halifax Canada/Atlantic America/Havana Cuba America/Hermosillo America/Indiana/Indianapolis US/East-Indiana America/Fort_Wayne America/Indianapolis America/Indiana/Knox US/Indiana-Starke America/Knox_IN America/Indiana/Marengo America/Indiana/Petersburg America/Indiana/Tell_City America/Indiana/Vevay America/Indiana/Vincennes America/Indiana/Winamac America/Inuvik America/Iqaluit America/Jamaica Jamaica America/Juneau America/Kentucky/Louisville America/Louisville America/Kentucky/Monticello America/Kralendijk America/La_Paz America/Lima America/Los_Angeles US/Pacific US/Pacific-New America/Lower_Princes America/Maceio America/Managua America/Manaus Brazil/West America/Marigot America/Martinique America/Matamoros America/Mazatlan Mexico/BajaSur America/Menominee America/Merida America/Metlakatla America/Mexico_City Mexico/General America/Miquelon America/Moncton America/Monterrey America/Montevideo America/Montreal America/Montserrat America/Nassau America/New_York US/Eastern America/Nipigon America/Nome America/Noronha Brazil/DeNoronha America/North_Dakota/Beulah America/North_Dakota/Center America/North_Dakota/New_Salem America/Ojinaga America/Panama America/Pangnirtung America/Paramaribo America/Phoenix US/Arizona America/Port-au-Prince America/Port_of_Spain America/Porto_Velho America/Puerto_Rico America/Rainy_River America/Rankin_Inlet America/Recife America/Regina Canada/East-Saskatchewan Canada/Saskatchewan America/Resolute America/Rio_Branco Brazil/Acre America/Porto_Acre America/Santa_Isabel America/Santarem America/Santiago Chile/Continental America/Santo_Domingo America/Sao_Paulo Brazil/East America/Scoresbysund America/Sitka America/St_Barthelemy America/St_Johns Canada/Newfoundland America/St_Kitts America/St_Lucia America/St_Thomas America/St_Vincent America/Swift_Current America/Tegucigalpa America/Thule America/Thunder_Bay America/Tijuana Mexico/BajaNorte America/Ensenada America/Toronto Canada/Eastern America/Tortola America/Vancouver Canada/Pacific America/Virgin America/Whitehorse Canada/Yukon America/Winnipeg Canada/Central America/Yakutat America/Yellowknife Antarctica/Casey Antarctica/Davis Antarctica/DumontDUrville Antarctica/Macquarie Antarctica/Mawson Antarctica/McMurdo Antarctica/Palmer Antarctica/Rothera Antarctica/South_Pole Antarctica/Syowa Antarctica/Troll Antarctica/Vostok Arctic/Longyearbyen Asia/Aden Asia/Almaty Asia/Amman Asia/Anadyr Asia/Aqtau Asia/Aqtobe Asia/Ashgabat Asia/Ashkhabad Asia/Baghdad Asia/Bahrain Asia/Baku Asia/Bangkok Asia/Beirut Asia/Bishkek Asia/Brunei Asia/Chita Asia/Choibalsan Asia/Chongqing Asia/Chungking Asia/Colombo Asia/Damascus Asia/Dhaka Asia/Dacca Asia/Dili Asia/Dubai Asia/Dushanbe Asia/Gaza Asia/Harbin Asia/Hebron Asia/Ho_Chi_Minh Asia/Hong_Kong HongKong Asia/Hovd Asia/Irkutsk Asia/Jakarta Asia/Jayapura Asia/Jerusalem Asia/Tel_Aviv Israel Asia/Kabul Asia/Kamchatka Asia/Karachi Asia/Kashgar Asia/Kathmandu Asia/Katmandu Asia/Khandyga Asia/Kolkata Asia/Calcutta Asia/Krasnoyarsk Asia/Kuala_Lumpur Asia/Kuching Asia/Kuwait Asia/Macau Asia/Macao Asia/Magadan Asia/Makassar Asia/Ujung_Pandang Asia/Manila Asia/Muscat Asia/Nicosia Europe/Nicosia Asia/Novokuznetsk Asia/Novosibirsk Asia/Omsk Asia/Oral Asia/Phnom_Penh Asia/Pontianak Asia/Pyongyang Asia/Qatar Asia/Qyzylorda Asia/Rangoon Asia/Riyadh Asia/Saigon Asia/Sakhalin Asia/Samarkand Asia/Seoul ROK Asia/Shanghai PRC Asia/Singapore Singapore Asia/Srednekolymsk Asia/Taipei ROC Asia/Tashkent Asia/Tbilisi Asia/Tehran Iran Asia/Thimphu Asia/Thimbu Asia/Tokyo Japan Asia/Ulaanbaatar Asia/Ulan_Bator Asia/Urumqi Asia/Ust-Nera Asia/Vientiane Asia/Vladivostok Asia/Yakutsk Asia/Yekaterinburg Asia/Yerevan Atlantic/Azores Atlantic/Bermuda Atlantic/Canary Atlantic/Cape_Verde Atlantic/Faroe Atlantic/Faeroe Atlantic/Jan_Mayen Atlantic/Madeira Atlantic/Reykjavik Iceland Atlantic/South_Georgia Atlantic/St_Helena Atlantic/Stanley Australia/Adelaide Australia/South Australia/Brisbane Australia/Queensland Australia/Broken_Hill Australia/Yancowinna Australia/Currie Australia/Darwin Australia/North Australia/Eucla Australia/Hobart Australia/Tasmania Australia/Lindeman Australia/Lord_Howe Australia/LHI Australia/Melbourne Australia/Victoria Australia/Perth Australia/West Australia/Sydney Australia/ACT Australia/Canberra Australia/NSW Europe/Amsterdam Europe/Andorra Europe/Athens Europe/Belgrade Europe/Berlin Europe/Bratislava Europe/Brussels Europe/Bucharest Europe/Budapest Europe/Busingen Europe/Chisinau Europe/Tiraspol Europe/Copenhagen Europe/Dublin Eire Europe/Gibraltar Europe/Guernsey Europe/Helsinki Europe/Isle_of_Man Europe/Istanbul Turkey Asia/Istanbul Europe/Jersey Europe/Kaliningrad Europe/Kiev Europe/Lisbon Portugal Europe/Ljubljana Europe/London GB GB-Eire Europe/Belfast Europe/Luxembourg Europe/Madrid Europe/Malta Europe/Mariehamn Europe/Minsk Europe/Monaco Europe/Moscow W-SU Europe/Oslo Europe/Paris Europe/Podgorica Europe/Prague Europe/Riga Europe/Rome Europe/Samara Europe/San_Marino Europe/Sarajevo Europe/Simferopol Europe/Skopje Europe/Sofia Europe/Stockholm Europe/Tallinn Europe/Tirane Europe/Uzhgorod Europe/Vaduz Europe/Vatican Europe/Vienna Europe/Vilnius Europe/Volgograd Europe/Warsaw Poland Europe/Zagreb Europe/Zaporozhye Europe/Zurich Indian/Antananarivo Indian/Chagos Indian/Christmas Indian/Cocos Indian/Comoro Indian/Kerguelen Indian/Mahe Indian/Maldives Indian/Mauritius Indian/Mayotte Indian/Reunion Pacific/Apia Pacific/Auckland NZ Pacific/Chatham NZ-CHAT Pacific/Chuuk Pacific/Truk Pacific/Easter Chile/EasterIsland Pacific/Efate Pacific/Enderbury Pacific/Fakaofo Pacific/Fiji Pacific/Funafuti Pacific/Galapagos Pacific/Gambier Pacific/Guadalcanal Pacific/Guam Pacific/Honolulu US/Hawaii Pacific/Johnston Pacific/Kiritimati Pacific/Kosrae Pacific/Kwajalein Kwajalein Pacific/Majuro Pacific/Marquesas Pacific/Midway Pacific/Nauru Pacific/Niue Pacific/Norfolk Pacific/Noumea Pacific/Pago_Pago US/Samoa Pacific/Palau Pacific/Pitcairn Pacific/Pohnpei Pacific/Ponape Pacific/Port_Moresby Pacific/Rarotonga Pacific/Saipan Pacific/Samoa Pacific/Tahiti Pacific/Tarawa Pacific/Tongatapu Pacific/Wake Pacific/Wallis Pacific/Yap ----

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Russian President Vladimir Putin signed the Federal Law 431985-6 return to winter time
by Alexander Krivenyshev July 25, 2014

July 25, 2014

According to the news (Russian ITAR-TASS News Agency) Putin signed the Federal Law 431985-6 return to winter time and to use 11 time zones in Russia. (in Russian) http://itar-tass.com/obschestvo/1333711 The official internet-portal of legal information Russian state system of legal information (in Russian) http://www.pravo.gov.ru:8080/page.aspx?111660 # print Vladimir Putin signed the Federal Law "On Amendments to the Federal Law" On the calculation of time. " (in Russian) http://www.kremlin.ru/acts/46279 >From October 26, 2014 the new Russian time zone map will looks like this: http://www.worldtimezone.com/dst_news/dst_news_russia-map-2014-07.html Alexander Krivenyshev http://www.WorldTimeZone.com

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Proposal to rename time.tab to region.tab
by Tobias Conradi July 23, 2014

July 23, 2014

Proposal to rename time.tab which was announced 2014-07-18 http://mm.icann.org/pipermail/tz/2014-July/021213.html to region.tab with reasoning as in Proposal to rename zone.tab to region.tab http://mm.icann.org/pipermail/tz/2014-July/021227.html But since time.tab is not yet publish with the additional benefit that there would be no file renaming for an end user. Reason: - it is a list of geographical regions - it is not a list of time ftp://ftp.iana.org/tz/code/Theory says ----- Scope of the tz database ----- ... To represent this data, the world is partitioned into regions .... For each such region, the database records all known clock transitions, and labels the region ...... Uniquely identify every national region .... Indicate to humans as to where that region is. .... is the name of a specific location within that region. ..... Uninhabited regions like ..... If all the clocks in a region have agreed since 1970, .... even if subregions' clocks disagreed before 1970. ...... Use cities or small islands, not countries or regions, [! other meaning] ..... The file `zone.tab' lists the geographical locations used to name time zone rule files. It is intended to be an exhaustive list of names for geographic regions as described above. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

1 0

tzselect.ksh fails under ksh, works under bash
by Alan Barrett July 23, 2014

July 23, 2014

If BASH_VERSION is not set, then tzselect.ksh performs a test in which it attmepts to use the select command, to see whether the select command is available: 84: (eval 'set --; select x; do break; done; exit') 2>/dev/null In the case that the shell is not bash, but the select command is available, then the select command reads a line of input. This is confusing for users, who don't even see a prompt. The attached patch fixes this by redirecting input from /dev/null. I also quoted some variables on general principles. --apb (Alan Barrett)

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Bill to return Russia 11 time zones
by Alexander Krivenyshev July 22, 2014

July 22, 2014

According to the Russian news (ITAR-TASS News Agency) http://en.itar-tass.com/russia/738562 The State Duma has approved in the second and third, the last reading the draft bill on returning to winter time standard and return Russia 11 time zones. The new regulations will come into effect on October 26, 2014 at 02:00 Moscow time. http://www.worldtimezone.com/dst_news/dst_news_russia62.html Alexander Krivenyshev http://www.WorldTimeZone.com

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[PATCH 0/5] Further fixes for Russian time zone changes
by Paul Eggert July 22, 2014

July 22, 2014

Here are some more patches to the tz database to cover the proposed time zone changes in Russia. The basic idea is to not do anything drastic like add new zones until the Russian changes are finalized, but in the meantime to assume that the changes will probably happen and to update existing zones accordingly. Much of the work in generating these patches was by Tim Parenti. Thanks! Paul Eggert (1): Update zone.tab for Russia, and remove Asia/Tiksi comment. Tim Parenti (4): Further fixes for the proposed Russian change on 2014-10-26. Prefer MSK/MSD for Volgograd when on Moscow time. Standardize commentary on the coverage of each Russian zone. Zone splits for the proposed Russian change on 2014-10-26 NEWS | 31 ++++- europe | 455 ++++++++++++++++++++++++++++++++++++++++++++++++--------------- zone.tab | 16 ++- 3 files changed, 386 insertions(+), 116 deletions(-) -- 1.9.1

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Fwd: Proposal to use 1946-01-01 instead of 1970-01-01 as cutoff point
by Tobias Conradi July 20, 2014

July 20, 2014

Retry, this didn't go through 2013-09-06, due to blocking by the time zone mailing list maintainer. ---------- Forwarded message ---------- From: Tobias Conradi <mail.2012(a)tobiasconradi.com> Date: Fri, Sep 6, 2013 at 12:11 PM Subject: Proposal to use 1946-01-01 instead of 1970-01-01 as cutoff point To: "tz(a)iana.org mailing list" <tz(a)iana.org> Proposal to use 1946-01-01 instead of 1970-01-01 as cutoff point. The concept of country in the database is based on ISO 3166 standards. ISO at http://www.iso.org/iso/home/standards/country_codes.htm says: "The country names in ISO 3166 come from United Nations sources." http://www.un.org/en/aboutun/index.shtml says: "The United Nations is an international organization founded in 1945" So 1946 is the first year where on 1 January the UN existed. This new boundary would exclude to reject data improvement requests like http://mm.icann.org/pipermail/tz/2010-January/016007.html Rejection: http://mm.icann.org/pipermail/tz/2010-January/016010.html Apart from allowing easier inclusion of historic data, the new cutoff point might be easier understandable by most users, assuming the UN is more known than Unix. The new cutoff point is located after WW2 end, thus inclusion of war time offset changes is still not mandatory. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Fwd: [PATCH] New file time.tab, superseding zone.tab
by Tobias Conradi July 20, 2014

July 20, 2014

looks list related, didn't read. Please everybody email to the list, not to me. ---------- Forwarded message ---------- From: John Hawkinson <jhawk(a)mit.edu> Date: Sun, Jul 20, 2014 at 4:36 AM Subject: Re: [tz] [PATCH] New file time.tab, superseding zone.tab To: Tobias Conradi <tc(a)tobiasconradi.com> Tobias: This message is sent to you personally and I expect you not to forward it to the list. Forwarding it to the list is probably reasonable grounds for the list management to ban you from the list again. Tobias Conradi <tc(a)tobiasconradi.com> wrote on Sun, 20 Jul 2014 at 04:20:02 +0200 in <CAAGevbXDN84607k_hSz93PXWB4uBhQgNuVP5z487b-+pRaCzPw(a)mail.gmail.com>: > This message seems list related but what only send to me. Maybe it is > of interest to others, as it gives insights into how Paul Eggert is > managing the list. It just tells us that Paul was doing the right thing, and that both of your messages were inappropriate. The first one, and then this second one as well. Paul would be justified in banning you from the list because of this, and I think he should. You have clearly shown you have poor judgement and poor understanding of list etiquette, and Paul has been patient with you. To be perfectly clear, your forwarding Paul's message is a violation of etiquette and further demonstrates that you should not be sending email to the list. Hopefully you can enforce that yourself, rather than needing to ban you via administrative/technical means. --jhawk(a)mit.edu John Hawkinson > > On Sun, Jul 20, 2014 at 4:12 AM, Paul Eggert <eggert(a)cs.ucla.edu> wrote: > > Tobias Conradi wrote: > >> > >> Paul Eggert controls ids, removes > >> them, repurposes them as he likes. > > > > > > I'm going to ask you again, privately, to stop making personal comments like > > that. This sort of thing out of place in this mailing list. If you can't > > refrain from putting personal comments into your email, then you should not > > be sending email to the list. > > > > -- > Tobias Conradi > Rheinsberger Str. 18 > 10115 Berlin > Germany > > http://tobiasconradi.com -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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Bug report for the tzcode2014e.tar.gz, patch included.
by John Cochran July 20, 2014

July 20, 2014

Greetings, I was recently working on an open source project seeing about updating some code based upon the 2010c version of your timezone code and bringing the code up to date based upon your 2014e version. In the process of doing this, I noticed some unneeded object files being linked together in order to create the zic program. As specified by your Makefile, zic is comprised of zic.o, localtime.o, asctime.o, scheck.o, and ialloc.o But as it turns out, localtime.o doesn't supply any symbols that zic.o needs. Additionally, the inclusion of asctime.o is there in order to satisfy a linkage requirement for localtime.o. So zic can be built by linking only zic.o, scheck.o, and ialloc.o together. A context diff of the proposed fix is attached. Sincerely, John Cochran -- There are two ways of constructing a software design: One way is to make it so simple that there are obviously no deficiencies and the other way is to make it so complicated that there are no obvious deficiencies. — C.A.R. Hoare

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Re: [tz] [PATCH] New file time.tab, superseding zone.tab
by Tobias Conradi July 20, 2014

July 20, 2014

This message seems list related but what only send to me. Maybe it is of interest to others, as it gives insights into how Paul Eggert is managing the list. On Sun, Jul 20, 2014 at 4:12 AM, Paul Eggert <eggert(a)cs.ucla.edu> wrote: > Tobias Conradi wrote: >> >> Paul Eggert controls ids, removes >> them, repurposes them as he likes. > > > I'm going to ask you again, privately, to stop making personal comments like > that. This sort of thing out of place in this mailing list. If you can't > refrain from putting personal comments into your email, then you should not > be sending email to the list. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

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[PATCH] * europe, NEWS: Give proper credit to George Vernon Hudson
by Paul Eggert July 19, 2014

July 19, 2014

as the inventor of DST. --- NEWS | 2 ++ europe | 20 +++++++++++++++++--- 2 files changed, 19 insertions(+), 3 deletions(-) diff --git a/NEWS b/NEWS index babfdac..1845ee8 100644 --- a/NEWS +++ b/NEWS @@ -186,6 +186,8 @@ Unreleased, experimental changes There is new commentary about time in Poland in 1919. + Proper credit has been given to DST inventor George Vernon Hudson. + Commentary about time in Metlakatla, AK and Resolute, NU has been improved, with a new source for the former. diff --git a/europe b/europe index 2ba3493..e87cc21 100644 --- a/europe +++ b/europe @@ -137,8 +137,22 @@ # transition date for London, namely 1847-12-01. We don't know as much # about Dublin, so we use 1880-08-02, the legal transition time. -# From Paul Eggert (2003-09-27): -# Summer Time was first seriously proposed by William Willett (1857-1915), +# From Paul Eggert (2014-07-19): +# The ancients had no need for daylight saving, as they kept time +# informally or via hours whose length depended on the time of year. +# Daylight saving time in its modern sense was invented by the +# New Zealand entomologist George Vernon Hudson (1867-1946), +# whose day job as a postal clerk led him to value +# after-hours daylight in which to pursue his research. +# In 1895 he presented a paper to the Wellington Philosophical Society +# that proposed a two-hour daylight-saving shift. See: +# Hudson GV. On seasonal time-adjustment in countries south of lat. 30 deg. +# Transactions and Proceedings of the New Zealand Institute. 1895;28:734 +# http://rsnz.natlib.govt.nz/volume/rsnz_28/rsnz_28_00_006110.html +# Although some interest was expressed in New Zealand, his proposal +# did not find its way into law and eventually it was almost forgotton. +# +# In England, DST was independently reinvented by William Willett (1857-1915), # a London builder and member of the Royal Astronomical Society # who circulated a pamphlet "The Waste of Daylight" (1907) # that proposed advancing clocks 20 minutes on each of four Sundays in April, @@ -151,7 +165,7 @@ # A monument to Willett was unveiled on 1927-05-21, in an open space in # a 45-acre wood near Chislehurst, Kent that was purchased by popular # subscription and open to the public. On the south face of the monolith, -# designed by G. W. Miller, is the...William Willett Memorial Sundial, +# designed by G. W. Miller, is the William Willett Memorial Sundial, # which is permanently set to Summer Time. # From Winston Churchill (1934-04-28): -- 1.9.1

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WG Review: Time Zone Data Distribution Service (tzdist)
by The IESG July 18, 2014

July 18, 2014

A new IETF working group has been proposed in the Applications Area. The IESG has not made any determination yet. The following draft charter was submitted, and is provided for informational purposes only. Please send your comments to the IESG mailing list (iesg at ietf.org) by 2014-07-28. Time Zone Data Distribution Service (tzdist) ------------------------------------------------ Current Status: Proposed WG Assigned Area Director: Barry Leiba <barryleiba(a)computer.org> Mailing list Address: tzdist(a)ietf.org To Subscribe: https://www.ietf.org/mailman/listinfo/tzdist Archive: http://www.ietf.org/mail-archive/web/tzdist/ Charter: Time Zone Data Distribution Service (tzdist) ----------------------------------------------------------- A time zone is a region that has a uniform local time for legal, commercial, and social purposes, with some regions using daylight saving time (DST) rules for part of the year. A local time is defined as a standard offset from Coordinated Universal Time (UTC), and a set of DST rules. Time zone data represents the history, current, and future local time rules for these regions, together with an associated time zone identifier. Time zone data is a critical element of computer systems and devices that make use of local time. In particular, it is critical to any calendaring and scheduling system, such as iCalendar (RFC 5545). Daylight saving time rules, which affect local UTC offsets, can change - sometimes at very short notice (just a few days) - as those rules are typically defined by political processes. Currently, there is no efficient, fast way to ensure that time zone data is updated in a timely and reliable manner on devices that need it. Time zone changes are often delivered as operating system updates, and are thus tied to release schedules that can trail the actual time zone changes by a significant period of time. A service is needed that can provide timely, reliable updates. One added benefit of such a service for iCalendar is the ability for calendaring clients and servers to agree on common, standard definitions of time zone data, removing the need to pass time zone data directly "by value" in iCalendar data. By allowing clients and servers to use time zones "by reference" significant network bandwidth and storage savings can be achieved. This working group will: - Define a time zone data distribution protocol that allows for efficient, timely updates of time zone data to be delivered to clients. This protocol must scale to vast numbers of clients, such as the potential "internet of things" devices, as well as to today's desktop computers and servers. - Define an extension to CalDAV (RFC 4791) to allow clients and servers to use time zones "by reference" to improve the efficiency of the overall protocol. The working group will use the following drafts as initial input for its work: draft-douglass-timezone-service-11 draft-daboo-caldav-timezone-ref-01 The working group will work under the following parameters: - The time zone data distribution protocol will initially be targeted at iCalendar-based clients, but should be flexible enough to deliver time zone data in other formats. - The time zone data will be based on the Time Zone Database (http://www.iana.org/time-zones) but must be able to include any source of time zone data. - The time zone data distribution protocol should also offer an API to allow thin clients to easily make use of time zone data by querying for UTC offsets, offloading the sometimes complex work of expanding recurrence rules to the service. This API should be extensible to support other types of time zone operations in the future. - The time zone data distribution protocol will use current security protocols to protect the integrity and confidentiality of the data as it is distributed, and may also address these issues with respect to retrieval of data from its original source (such as the Time Zone Database). Even public time zone data can represent a significant privacy exposure when it is associated with the user or endpoint that is retrieving it. The following are Out of scope for the working group: - Any changes to the Time Zone Database process or infrastructure, as documented in RFC 6557. However, the WG may work with IANA in order to make integrity checking information, such as public keys, readily accessible for protocol use. - The naming process for time zone identifiers. The working group can consider adding a mechanism, such as a "namespace" prefix, to differentiate different time zone sources, but the nature of the time zone identifiers used will be controlled by the sources themselves. - Lookup protocols or APIs to map a location to a time zone. Milestones: TBD

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[PATCH] Be a bit more consistent about Metlakatla and Resolute abbr and comments.
by Paul Eggert July 18, 2014

July 18, 2014

* northamerica (America/Metlakatla): Use the more-common "PST" rather than our invented "MeST" for the abbreviation. Our source called it "Pacific Time", as did a contemporaneous news report, and I couldn't find contemporaneous use of "MeST" or of "Metlakatla Time". Cite the news report in the commentary, and quote some Juneau graffiti. * zone.tab (America/Resolute): Call it Central Time, not Central Standard Time, since it observes DST now. (America/Metlakatla): Call it Pacific Standard Time, not Metlakatla Time. Mention that it's in Alaska. * NEWS: Document the above. --- NEWS | 5 +++++ northamerica | 17 +++++++++++------ zone.tab | 4 ++-- 3 files changed, 18 insertions(+), 8 deletions(-) diff --git a/NEWS b/NEWS index f77fe86..ffcbd92 100644 --- a/NEWS +++ b/NEWS @@ -46,6 +46,8 @@ Unreleased, experimental changes Prefix "W" to (western) Samoa time when its standard-time offset disagrees with that of American Samoa. + America/Metlakatla now uses PST, not MeST, to abbreviate its time zone. + Time zone abbreviations have been updated for Japan's two time zones used 1896-1937. JWST now stands for Western Standard Time, and JCST for Central Standard Time (formerly this was CJT). @@ -173,6 +175,9 @@ Unreleased, experimental changes There is new commentary about time in Poland in 1919. + Commentary about time in Metlakatla, AK and Resolute, NU has been + improved, with a new source for the former. + In zone.tab, Pacific/Easter no longer mentions Salas y Gómez, as it is uninhabited. diff --git a/northamerica b/northamerica index c461ef4..1b6bb23 100644 --- a/northamerica +++ b/northamerica @@ -421,13 +421,18 @@ Zone America/Los_Angeles -7:52:58 - LMT 1883 Nov 18 12:07:02 # was destroyed in 1805 by a Yakutat-kon war party.) However, there # were nearby inhabitants in some cases and for our purposes perhaps # it's best to simply use the official transition. -# -# From Steve Ferguson (2011-01-31): -# The author lives in Alaska and many of the references listed are only -# available to Alaskan residents. +# From Paul Eggert (2014-07-18): +# One opinion of the early-1980s turmoil in Alaska over time zones and +# daylight saving time appeared as graffiti on a Juneau airport wall: +# "Welcome to Juneau. Please turn your watch back to the 19th century." +# See: Turner W. Alaska's four time zones now two. NY Times 1983-11-01. +# http://www.nytimes.com/1983/11/01/us/alaska-s-four-time-zones-now-two.html # -# http://www.alaskahistoricalsociety.org/index.cfm?section=discover%20alaska&… +# Steve Ferguson (2011-01-31) referred to the following source: +# Norris F. Keeping time in Alaska: national directives, local response. +# Alaska History 2001;16(1-2). +# http://alaskahistoricalsociety.org/discover-alaska/glimpses-of-the-past/kee… # From Arthur David Olson (2011-02-01): # Here's database-relevant material from the 2001 "Alaska History" article: @@ -489,7 +494,7 @@ Zone America/Metlakatla 15:13:42 - LMT 1867 Oct 18 -8:00 US P%sT 1946 -8:00 - PST 1969 -8:00 US P%sT 1983 Oct 30 2:00 - -8:00 - MeST + -8:00 - PST Zone America/Yakutat 14:41:05 - LMT 1867 Oct 18 -9:18:55 - LMT 1900 Aug 20 12:00 -9:00 - YST 1942 diff --git a/zone.tab b/zone.tab index e29778c..e415ca6 100644 --- a/zone.tab +++ b/zone.tab @@ -128,7 +128,7 @@ CA +4901-08816 America/Nipigon Eastern Time - Ontario & Quebec - places that did CA +4823-08915 America/Thunder_Bay Eastern Time - Thunder Bay, Ontario CA +6344-06828 America/Iqaluit Eastern Time - east Nunavut - most locations CA +6608-06544 America/Pangnirtung Eastern Time - Pangnirtung, Nunavut -CA +744144-0944945 America/Resolute Central Standard Time - Resolute, Nunavut +CA +744144-0944945 America/Resolute Central Time - Resolute, Nunavut CA +484531-0913718 America/Atikokan Eastern Standard Time - Atikokan, Ontario and Southampton I, Nunavut CA +624900-0920459 America/Rankin_Inlet Central Time - central Nunavut CA +4953-09709 America/Winnipeg Central Time - Manitoba & west Ontario @@ -433,7 +433,7 @@ US +571035-1351807 America/Sitka Alaska Time - southeast Alaska panhandle US +593249-1394338 America/Yakutat Alaska Time - Alaska panhandle neck US +643004-1652423 America/Nome Alaska Time - west Alaska US +515248-1763929 America/Adak Aleutian Islands -US +550737-1313435 America/Metlakatla Metlakatla Time - Annette Island +US +550737-1313435 America/Metlakatla Pacific Standard Time - Annette Island, Alaska US +211825-1575130 Pacific/Honolulu Hawaii UY -3453-05611 America/Montevideo UZ +3940+06648 Asia/Samarkand west Uzbekistan -- 1.9.1

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A rollup tz release would be helpful
by Andy Heninger July 18, 2014

July 18, 2014

There have been a pretty substantial number of refactoring and cleanup changes to the experimental tz repository over the last month, and things now seem to be settling down. Speaking as the person who does a fair amount of the integration of tz releases into Google, I would definitely find it helpful to have an official release that includes these changes happen sooner rather than later. Past experience suggests that there may be a few internal glitches to be sorted through, and I would far prefer to handle them now, while not under pressure to get some low-lead-time rule change deployed in a hurry. We only deploy official tz releases, not informal repository snapshots. Thanks, -- Andy

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Mapping lat/lon to timezones, in Go
by Dirkjan Ochtman July 16, 2014

July 16, 2014

This might be interesting for people on this list: https://plus.google.com/u/0/+BradFitzpatrick/posts/XVyy1bAzkZd Cheers, Dirkjan

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[PATCH] Replace Africa zones with links when that doesn't lose useful info.
by Paul Eggert July 16, 2014

July 16, 2014

* africa (Africa/Luanda, Africa/Porto-Novo, Africa/Gaborone) (Africa/Ouagadougou, Africa/Bujumbura, Africa/Douala, Africa/Bangui) (Indian/Comoro, Africa/Kinshasa, Africa/Lubumbashi, Africa/Brazzaville) (Africa/Djibouti, Africa/Malabo, Africa/Asmara, Africa/Addis_Ababa) (Africa/Libreville, Africa/Banjul, Africa/Accra, Africa/Conakry) (Africa/Maseru, Indian/Antananarivo, Africa/Blantyre, Africa/Bamako) (Africa/Nouakchott, Indian/Mayotte, Africa/Maputo, Africa/Niamey) (Africa/Kigali, Atlantic/St_Helena, Africa/Sao_Tome, Africa/Dakar) (Africa/Freetown, Africa/Mogadishu, Africa/Mbabane, Africa/Dar_es_Salaam) (Africa/Lome, Africa/Kampala, Africa/Lusaka, Africa/Harare): * antarctica (Antarctica/Syowa): Remove zone, replacing each with a link to a region that has had the same UTC offset since 1970. * NEWS: Document this. --- NEWS | 20 +++-- africa | 266 ++++++++++++++++++++----------------------------------------- antarctica | 5 +- 3 files changed, 104 insertions(+), 187 deletions(-) diff --git a/NEWS b/NEWS index 222f91e..429b89e 100644 --- a/NEWS +++ b/NEWS @@ -61,11 +61,21 @@ Unreleased, experimental changes Some zones have been turned into links, when they differed from existing zones only for older UTC offsets where the data were likely invented. These changes affect UTC offsets in pre-1970 time stamps only. This is - similar to the change in release 2013e, except this time for the Pacific. - The affected zones are: Antarctica/DumontDUrville, Pacific/Chuuk, - Pacific/Funafuti, Pacific/Majuro, Pacific/Midway, Pacific/Palau, - Pacific/Pohnpei, Pacific/Saipan, Pacific/Tahiti, Pacific/Wake, and - Pacific/Wallis. + similar to the change in release 2013e, except this time for Africa and + the Pacific. The affected zones are: Africa/Accra, Africa/Addis_Ababa, + Africa/Asmara, Africa/Bamako, Africa/Bangui, Africa/Banjul, + Africa/Blantyre, Africa/Brazzaville, Africa/Bujumbura, Africa/Conakry, + Africa/Dakar, Africa/Dar_es_Salaam, Africa/Djibouti, Africa/Douala, + Africa/Freetown, Africa/Gaborone, Africa/Harare, Africa/Kampala, + Africa/Kigali, Africa/Kinshasa, Africa/Libreville, Africa/Lome, + Africa/Luanda, Africa/Lubumbashi, Africa/Lusaka, Africa/Malabo, + Africa/Maputo, Africa/Maseru, Africa/Mbabane, Africa/Mogadishu, + Africa/Niamey, Africa/Nouakchott, Africa/Ouagadougou, Africa/Porto-Novo, + Africa/Sao_Tome, Antarctica/DumontDUrville, Antarctica/Syowa, + Atlantic/St_Helena, Indian/Antananarivo, Indian/Comoro, Indian/Mayotte, + Pacific/Chuuk, Pacific/Funafuti, Pacific/Majuro, Pacific/Midway, + Pacific/Palau, Pacific/Pohnpei, Pacific/Saipan, Pacific/Tahiti, + Pacific/Wake, and Pacific/Wallis. Asia/Shanghai's pre-standard-time UT offset has been changed from 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its diff --git a/africa b/africa index 3d84d9b..678cde2 100644 --- a/africa +++ b/africa @@ -64,7 +64,6 @@ # 3:00 CAST Central Africa Summer Time (no longer used) # 3:00 SAST South Africa Summer Time (no longer used) # 3:00 EAT East Africa Time -# 4:00 EAST East Africa Summer Time (no longer used) # Algeria # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S @@ -105,45 +104,21 @@ Zone Africa/Algiers 0:12:12 - LMT 1891 Mar 15 0:01 1:00 - CET # Angola -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Luanda 0:52:56 - LMT 1892 - 0:52:04 - AOT 1911 May 26 # Angola Time - 1:00 - WAT - # Benin -# Whitman says they switched to 1:00 in 1946, not 1934; -# go with Shanks & Pottenger. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Porto-Novo 0:10:28 - LMT 1912 - 0:00 - GMT 1934 Feb 26 - 1:00 - WAT +# See Africa/Lagos. # Botswana -# From Paul Eggert (2013-02-21): -# Milne says they were regulated by the Cape Town Signal in 1899; -# assume they switched to 2:00 when Cape Town did. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Gaborone 1:43:40 - LMT 1885 - 1:30 - SAST 1903 Mar - 2:00 - CAT 1943 Sep 19 2:00 - 2:00 1:00 CAST 1944 Mar 19 2:00 - 2:00 - CAT +# Milne says they were regulated by the Cape Town Signal in 1899. +# See Africa/Johannesburg. # Burkina Faso -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Ouagadougou -0:06:04 - LMT 1912 - 0:00 - GMT +# See Africa/Abidjan. # Burundi -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Bujumbura 1:57:28 - LMT 1890 - 2:00 - CAT +# See Africa/Johannesburg. # Cameroon -# Whitman says they switched to 1:00 in 1920; go with Shanks & Pottenger. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Douala 0:38:48 - LMT 1912 - 1:00 - WAT +# See Africa/Lagos. # Cape Verde # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -154,9 +129,7 @@ Zone Atlantic/Cape_Verde -1:34:04 - LMT 1907 # Praia -1:00 - CVT # Central African Republic -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Bangui 1:14:20 - LMT 1912 - 1:00 - WAT +# See Africa/Lagos. # Chad # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -166,31 +139,33 @@ Zone Africa/Ndjamena 1:00:12 - LMT 1912 # N'Djamena 1:00 - WAT # Comoros -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Indian/Comoro 2:53:04 - LMT 1911 Jul # Moroni, Gran Comoro - 3:00 - EAT +# See Africa/Nairobi. # Democratic Republic of Congo -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Kinshasa 1:01:12 - LMT 1897 Nov 9 - 1:00 - WAT -Zone Africa/Lubumbashi 1:49:52 - LMT 1897 Nov 9 - 2:00 - CAT +# See Africa/Lagos for the western part of the country. +# See Africa/Johannesburg for the eastern part of the country. # Republic of the Congo -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Brazzaville 1:01:08 - LMT 1912 - 1:00 - WAT +# See Africa/Lagos. # Côte D'Ivoire / Ivory Coast # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Abidjan -0:16:08 - LMT 1912 0:00 - GMT +Link Africa/Abidjan Africa/Accra # Ghana +Link Africa/Abidjan Africa/Bamako # Mali +Link Africa/Abidjan Africa/Banjul # Gambia +Link Africa/Abidjan Africa/Conakry # Guinea +Link Africa/Abidjan Africa/Dakar # Senegal +Link Africa/Abidjan Africa/Freetown # Sierra Leone +Link Africa/Abidjan Africa/Lome # Togo +Link Africa/Abidjan Africa/Nouakchott # Mauritania +Link Africa/Abidjan Africa/Ouagadougou # Burkina Faso +Link Africa/Abidjan Africa/Sao_Tome # São Tomé and Príncipe +Link Africa/Abidjan Atlantic/St_Helena # St Helena # Djibouti -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Djibouti 2:52:36 - LMT 1911 Jul - 3:00 - EAT +# See Africa/Nairobi. ############################################################################### @@ -400,56 +375,32 @@ Zone Africa/Cairo 2:05:09 - LMT 1900 Oct 2:00 Egypt EE%sT # Equatorial Guinea -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Malabo 0:35:08 - LMT 1912 - 0:00 - GMT 1963 Dec 15 - 1:00 - WAT +# See Africa/Lagos. # Eritrea -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Asmara 2:35:32 - LMT 1870 - 2:35:32 - AMT 1890 # Asmara Mean Time - 2:35:20 - ADMT 1936 May 5 # Adis Dera MT - 3:00 - EAT +# See Africa/Nairobi. # Ethiopia -# From Paul Eggert (2006-03-22): -# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time zones -# between 1870 and 1890, and that they merged to 38E50 (2:35:20) in 1890. -# We'll guess that 38E50 is for Adis Dera. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Addis_Ababa 2:34:48 - LMT 1870 - 2:35:20 - ADMT 1936 May 5 # Adis Dera MT - 3:00 - EAT +# From Paul Eggert (2014-07-09): +# Like the Swahili of Kenya and Tanzania, many Ethiopians keep a +# 12-hour clock starting at our 06:00, so their "8 o'clock" is our +# 02:00 or 14:00. Keep this in mind when you ask the time in Amharic. +# +# Shanks & Pottenger write that Ethiopia had six narrowly-spaced time +# zones between 1870 and 1890, that they merged to 38E50 (2:35:20) in +# 1890, and that they switched to 3:00 on 1936-05-05. Perhaps 38E50 +# was for Adis Dera. Ignore this for now as it predates our 1970 +# cutoff, and it's quite likely wrong anyway. +# +# See Africa/Nairobi. # Gabon -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Libreville 0:37:48 - LMT 1912 - 1:00 - WAT +# See Africa/Lagos. # Gambia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Banjul -1:06:36 - LMT 1912 - -1:06:36 - BMT 1935 # Banjul Mean Time - -1:00 - WAT 1964 - 0:00 - GMT - # Ghana -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -# Whitman says DST was observed from 1931 to "the present"; -# go with Shanks & Pottenger. -Rule Ghana 1936 1942 - Sep 1 0:00 0:20 GHST -Rule Ghana 1936 1942 - Dec 31 0:00 0 GMT -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Accra -0:00:52 - LMT 1918 - 0:00 Ghana %s - # Guinea -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Conakry -0:54:52 - LMT 1912 - 0:00 - GMT 1934 Feb 26 - -1:00 - WAT 1960 - 0:00 - GMT +# See Africa/Abidjan. # Guinea-Bissau # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -464,13 +415,19 @@ Zone Africa/Nairobi 2:27:16 - LMT 1928 Jul 2:30 - BEAT 1940 2:45 - BEAUT 1960 3:00 - EAT +Link Africa/Nairobi Africa/Addis_Ababa # Ethiopia +Link Africa/Nairobi Africa/Asmara # Eritrea +Link Africa/Nairobi Africa/Dar_es_Salaam # Tanzania +Link Africa/Nairobi Africa/Djibouti +Link Africa/Nairobi Africa/Kampala # Uganda +Link Africa/Nairobi Africa/Mogadishu # Somalia +Link Africa/Nairobi Antarctica/Syowa +Link Africa/Nairobi Indian/Antananarivo # Madagascar +Link Africa/Nairobi Indian/Comoro +Link Africa/Nairobi Indian/Mayotte # Lesotho -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Maseru 1:50:00 - LMT 1903 Mar - 2:00 - SAST 1943 Sep 19 2:00 - 2:00 1:00 SAST 1944 Mar 19 2:00 - 2:00 - SAST +# See Africa/Johannesburg. # Liberia # From Paul Eggert (2006-03-22): @@ -545,30 +502,14 @@ Zone Africa/Tripoli 0:52:44 - LMT 1920 2:00 - EET # Madagascar -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Indian/Antananarivo 3:10:04 - LMT 1911 Jul - 3:00 - EAT 1954 Feb 27 23:00s - 3:00 1:00 EAST 1954 May 29 23:00s - 3:00 - EAT +# See Africa/Nairobi. # Malawi -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Blantyre 2:20:00 - LMT 1903 Mar - 2:00 - CAT +# See Africa/Johannesburg. # Mali -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Bamako -0:32:00 - LMT 1912 - 0:00 - GMT 1934 Feb 26 - -1:00 - WAT 1960 Jun 20 - 0:00 - GMT - # Mauritania -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Nouakchott -1:03:48 - LMT 1912 - 0:00 - GMT 1934 Feb 26 - -1:00 - WAT 1960 Nov 28 - 0:00 - GMT +# See Africa/Abidjan. # Mauritius @@ -665,8 +606,7 @@ Zone Indian/Mauritius 3:50:00 - LMT 1907 # Port Louis # Mayotte # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Indian/Mayotte 3:00:56 - LMT 1911 Jul # Mamoutzou - 3:00 - EAT +# See Africa/Nairobi. # Morocco # See the 'europe' file for Spanish Morocco (Africa/Ceuta). @@ -964,9 +904,7 @@ Zone Africa/El_Aaiun -0:52:48 - LMT 1934 Jan # El Aaiún 0:00 Morocco WE%sT # Mozambique -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Maputo 2:10:20 - LMT 1903 Mar - 2:00 - CAT +# See Africa/Johannesburg. # Namibia # The 1994-04-03 transition is from Shanks & Pottenger. @@ -998,16 +936,21 @@ Zone Africa/Windhoek 1:08:24 - LMT 1892 Feb 8 1:00 Namibia WA%sT # Niger -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Niamey 0:08:28 - LMT 1912 - -1:00 - WAT 1934 Feb 26 - 0:00 - GMT 1960 - 1:00 - WAT +# See Africa/Lagos. # Nigeria # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Africa/Lagos 0:13:36 - LMT 1919 Sep 1:00 - WAT +Link Africa/Lagos Africa/Bangui # Central African Republic +Link Africa/Lagos Africa/Brazzaville # Rep. of the Congo +Link Africa/Lagos Africa/Douala # Cameroon +Link Africa/Lagos Africa/Kinshasa # W Dem. Rep. of the Congo +Link Africa/Lagos Africa/Libreville # Gabon +Link Africa/Lagos Africa/Luanda # Angola +Link Africa/Lagos Africa/Malabo # Equatorial Guinea +Link Africa/Lagos Africa/Niamey # Niger +Link Africa/Lagos Africa/Porto-Novo # Benin # Réunion # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -1028,16 +971,11 @@ Link Indian/Reunion Indian/Alfred_Faure # Tromelin - inhabited until at least 1958 # Rwanda -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Kigali 2:00:16 - LMT 1935 Jun - 2:00 - CAT +# See Africa/Johannesburg. # St Helena -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown - -0:22:48 - JMT 1951 # Jamestown Mean Time - 0:00 - GMT -# The other parts of the St Helena territory are similar: +# See Africa/Abidjan. +# The parts of the St Helena territory are similar: # Tristan da Cunha: on GMT, say Whitman and the CIA # Ascension: on GMT, say the USNO (1995-12-21) and the CIA # Gough (scientific station since 1955; sealers wintered previously): @@ -1045,16 +983,8 @@ Zone Atlantic/St_Helena -0:22:48 - LMT 1890 # Jamestown # Inaccessible, Nightingale: uninhabited # São Tomé and Príncipe -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Sao_Tome 0:26:56 - LMT 1884 - -0:36:32 - LMT 1912 # Lisbon Mean Time - 0:00 - GMT - # Senegal -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Dakar -1:09:44 - LMT 1912 - -1:00 - WAT 1941 Jun - 0:00 - GMT +# See Africa/Abidjan. # Seychelles # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -1068,24 +998,10 @@ Zone Indian/Mahe 3:41:48 - LMT 1906 Jun # Victoria # Possibly the islands were uninhabited. # Sierra Leone -# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -# Whitman gives Mar 31 - Aug 31 for 1931 on; go with Shanks & Pottenger. -Rule SL 1935 1942 - Jun 1 0:00 0:40 SLST -Rule SL 1935 1942 - Oct 1 0:00 0 WAT -Rule SL 1957 1962 - Jun 1 0:00 1:00 SLST -Rule SL 1957 1962 - Sep 1 0:00 0 GMT -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Freetown -0:53:00 - LMT 1882 - -0:53:00 - FMT 1913 Jun # Freetown Mean Time - -1:00 SL %s 1957 - 0:00 SL %s +# See Africa/Abidjan. # Somalia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Mogadishu 3:01:28 - LMT 1893 Nov - 3:00 - EAT 1931 - 2:30 - BEAT 1957 - 3:00 - EAT +# See Africa/Nairobi. # South Africa # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S @@ -1095,6 +1011,17 @@ Rule SA 1943 1944 - Mar Sun>=15 2:00 0 - Zone Africa/Johannesburg 1:52:00 - LMT 1892 Feb 8 1:30 - SAST 1903 Mar 2:00 SA SAST +Link Africa/Johannesburg Africa/Blantyre # Malawi +Link Africa/Johannesburg Africa/Bujumbura # Burundi +Link Africa/Johannesburg Africa/Gaborone # Botswana +Link Africa/Johannesburg Africa/Harare # Zimbabwe +Link Africa/Johannesburg Africa/Kigali # Rwanda +Link Africa/Johannesburg Africa/Lubumbashi # E Dem. Rep. of Congo +Link Africa/Johannesburg Africa/Lusaka # Zambia +Link Africa/Johannesburg Africa/Maputo # Mozambique +Link Africa/Johannesburg Africa/Maseru # Lesotho +Link Africa/Johannesburg Africa/Mbabane # Swaziland +# # Marion and Prince Edward Is # scientific station since 1947 # no information @@ -1122,21 +1049,13 @@ Zone Africa/Khartoum 2:10:08 - LMT 1931 Link Africa/Khartoum Africa/Juba # Swaziland -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Mbabane 2:04:24 - LMT 1903 Mar - 2:00 - SAST +# See Africa/Johannesburg. # Tanzania -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Dar_es_Salaam 2:37:08 - LMT 1931 - 3:00 - EAT 1948 - 2:45 - BEAUT 1961 - 3:00 - EAT +# See Africa/Nairobi. # Togo -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Lome 0:04:52 - LMT 1893 - 0:00 - GMT +# See Africa/Abidjan. # Tunisia @@ -1239,19 +1158,8 @@ Zone Africa/Tunis 0:40:44 - LMT 1881 May 12 1:00 Tunisia CE%sT # Uganda -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Kampala 2:09:40 - LMT 1928 Jul - 3:00 - EAT 1930 - 2:30 - BEAT 1948 - 2:45 - BEAUT 1957 - 3:00 - EAT +# See Africa/Nairobi. # Zambia -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Lusaka 1:53:08 - LMT 1903 Mar - 2:00 - CAT - # Zimbabwe -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Africa/Harare 2:04:12 - LMT 1903 Mar - 2:00 - CAT +# See Africa/Johannesburg. diff --git a/antarctica b/antarctica index 16aedaa..38720a8 100644 --- a/antarctica +++ b/antarctica @@ -207,12 +207,11 @@ Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Français # Syowa station, which is the first antarctic station of Japan, # was established on 1957-01-29. Since Syowa station is still the main # station of Japan, it's appropriate for the principal location. -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Antarctica/Syowa 0 - zzz 1957 Jan 29 - 3:00 - SYOT # Syowa Time # See: # NIPR Antarctic Research Activities (1999-08-17) # <http://www.nipr.ac.jp/english/ara01.html> +# +# See Africa/Nairobi. # S Korea - year-round base # Jang Bogo, Terra Nova Bay, -743700+1641205 since 2014 -- 1.9.1

4 6

[PATCH] Replace some zones with links when that doesn't lose useful info.
by Paul Eggert July 11, 2014

July 11, 2014

This is like the 2013-09-02 change, but for the Pacific this time. * antarctica (Antarctica/DumontDUrville): * australasia (Pacific/Tahiti, Pacific/Saipan, Pacific/Majuro) (Pacific/Chuuk, Pacific/Pohnpei, Pacific/Palau, Pacific/Funafuti) (Pacific/Midway, Pacific/Wake, Pacific/Wallis): Remove zone, replacing each with a link to a region that has had the same UTC offset since 1970. This removes data that were largely invented, either by us or almost surely by Shanks or his sources. * asia, australasia, northamerica: Create links accordingly. * NEWS: Document this. --- NEWS | 9 +++++++++ antarctica | 7 +------ asia | 3 +++ australasia | 53 +++++++++++++++++++---------------------------------- northamerica | 1 + 5 files changed, 33 insertions(+), 40 deletions(-) diff --git a/NEWS b/NEWS index 82c83c9..222f91e 100644 --- a/NEWS +++ b/NEWS @@ -58,6 +58,15 @@ Unreleased, experimental changes UTC+6 and not UTC+8. (Thanks to Luther Ma and to Alois Treindl; Treindl sent helpful translations of two papers by Guo Qingsheng.) + Some zones have been turned into links, when they differed from existing + zones only for older UTC offsets where the data were likely invented. + These changes affect UTC offsets in pre-1970 time stamps only. This is + similar to the change in release 2013e, except this time for the Pacific. + The affected zones are: Antarctica/DumontDUrville, Pacific/Chuuk, + Pacific/Funafuti, Pacific/Majuro, Pacific/Midway, Pacific/Palau, + Pacific/Pohnpei, Pacific/Saipan, Pacific/Tahiti, Pacific/Wake, and + Pacific/Wallis. + Asia/Shanghai's pre-standard-time UT offset has been changed from 8:05:57 to 8:05:43, the location of Xujiahui Observatory. Its transition to standard time has been changed from 1928 to 1901. diff --git a/antarctica b/antarctica index 9e9d118..16aedaa 100644 --- a/antarctica +++ b/antarctica @@ -180,15 +180,10 @@ Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Français # year-round base in the main continent # Dumont d'Urville, Île des Pétrels, -6640+14001, since 1956-11 # <http://en.wikipedia.org/wiki/Dumont_d'Urville_Station> (2005-12-05) +# See Pacific/Port_Moresby. # # Another base at Port-Martin, 50km east, began operation in 1947. # It was destroyed by fire on 1952-01-14. -# -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Antarctica/DumontDUrville 0 - zzz 1947 - 10:00 - PMT 1952 Jan 14 # Port-Martin Time - 0 - zzz 1956 Nov - 10:00 - DDUT # Dumont-d'Urville Time # France & Italy - year-round base # Concordia, -750600+1232000, since 2005 diff --git a/asia b/asia index 4d9faeb..68994d5 100644 --- a/asia +++ b/asia @@ -1432,6 +1432,9 @@ Zone Asia/Tokyo 9:18:59 - LMT 1887 Dec 31 15:00u 9:00 Japan J%sT # Since 1938, all Japanese possessions have been like Asia/Tokyo. +# The following region has been like Asia/Tokyo since at least 1970. +Link Asia/Tokyo Pacific/Palau + # Jordan # # From <http://star.arabia.com/990701/JO9.html> diff --git a/australasia b/australasia index 605d8dd..cd9c3e4 100644 --- a/australasia +++ b/australasia @@ -355,8 +355,7 @@ Zone Pacific/Gambier -8:59:48 - LMT 1912 Oct # Rikitea -9:00 - GAMT # Gambier Time Zone Pacific/Marquesas -9:18:00 - LMT 1912 Oct -9:30 - MART # Marquesas Time -Zone Pacific/Tahiti -9:58:16 - LMT 1912 Oct # Papeete - -10:00 - TAHT # Tahiti Time +# See Pacific/Honolulu for Tahiti. # Clipperton (near North America) is administered from French Polynesia; # it is uninhabited. @@ -366,11 +365,16 @@ Zone Pacific/Guam -14:21:00 - LMT 1844 Dec 31 9:39:00 - LMT 1901 # Agana 10:00 - GST 2000 Dec 23 # Guam 10:00 - ChST # Chamorro Standard Time +Link Pacific/Guam Pacific/Saipan # N Mariana Is # Kiribati # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Tarawa 11:32:04 - LMT 1901 # Bairiki 12:00 - GILT # Gilbert Is Time +Link Pacific/Tarawa Pacific/Funafuti # Tuvalu +Link Pacific/Tarawa Pacific/Majuro # Marshall Is (most locations) +Link Pacific/Tarawa Pacific/Wake # in US minor outlying islands +Link Pacific/Tarawa Pacific/Wallis # Wallis and Futuna Zone Pacific/Enderbury -11:24:20 - LMT 1901 -12:00 - PHOT 1979 Oct # Phoenix Is Time -11:00 - PHOT 1995 @@ -381,29 +385,20 @@ Zone Pacific/Kiritimati -10:29:20 - LMT 1901 14:00 - LINT # N Mariana Is -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Saipan -14:17:00 - LMT 1844 Dec 31 - 9:43:00 - LMT 1901 - 9:00 - MPT 1969 Oct # N Mariana Is Time - 10:00 - MPT 2000 Dec 23 - 10:00 - ChST # Chamorro Standard Time +# See Pacific/Guam. # Marshall Is +# See Pacific/Tarawa for most locations. # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Majuro 11:24:48 - LMT 1901 - 11:00 - MHT 1969 Oct # Marshall Islands Time - 12:00 - MHT Zone Pacific/Kwajalein 11:09:20 - LMT 1901 11:00 - MHT 1969 Oct -12:00 - KWAT 1993 Aug 20 # Kwajalein Time 12:00 - MHT # Micronesia +# See Pacific/Guadalcanal for Pohnpei. +# See Pacific/Port_Moresby for Chuuk. # Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Chuuk 10:07:08 - LMT 1901 - 10:00 - CHUT # Chuuk Time -Zone Pacific/Pohnpei 10:32:52 - LMT 1901 # Kolonia - 11:00 - PONT # Pohnpei Time Zone Pacific/Kosrae 10:51:56 - LMT 1901 11:00 - KOST 1969 Oct # Kosrae Time 12:00 - KOST 1999 @@ -509,15 +504,15 @@ Zone Pacific/Norfolk 11:11:52 - LMT 1901 # Kingston 11:30 - NFT # Norfolk Time # Palau (Belau) -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Palau 8:57:56 - LMT 1901 # Koror - 9:00 - PWT # Palau Time +# See Asia/Tokyo. # Papua New Guinea # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Port_Moresby 9:48:40 - LMT 1880 9:48:32 - PMMT 1895 # Port Moresby Mean Time 10:00 - PGT # Papua New Guinea Time +Link Pacific/Port_Moresby Antarctica/DumontDUrville +Link Pacific/Port_Moresby Pacific/Chuuk # in Micronesia # Pitcairn # Zone NAME GMTOFF RULES FORMAT [UNTIL] @@ -532,6 +527,7 @@ Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5 -11:00 - NST 1967 Apr # N=Nome -11:00 - BST 1983 Nov 30 # B=Bering -11:00 - SST # S=Samoa +Link Pacific/Pago_Pago Pacific/Midway # in US minor outlying islands # Samoa (formerly and also known as Western Samoa) @@ -619,6 +615,7 @@ Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Guadalcanal 10:39:48 - LMT 1912 Oct # Honiara 11:00 - SBT # Solomon Is Time +Link Pacific/Guadalcanal Pacific/Pohnpei # in Micronesia # Tokelau Is # @@ -657,9 +654,7 @@ Zone Pacific/Tongatapu 12:19:20 - LMT 1901 13:00 Tonga TO%sT # Tuvalu -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Funafuti 11:56:52 - LMT 1901 - 12:00 - TVT # Tuvalu Time +# See Pacific/Tarawa. # US minor outlying islands @@ -724,21 +719,13 @@ Zone Pacific/Funafuti 11:56:52 - LMT 1901 # Fri. 6:30A Lv. HONOLOLU (Pearl Harbor), H.I. H.L.T. Ar. 5:30P Sun. # " 3:00P Ar. MIDWAY ISLAND . . . . . . . . . M.L.T. Lv. 6:00A " # -Zone Pacific/Midway -11:49:28 - LMT 1901 - -11:00 - NST 1956 Jun 3 - -11:00 1:00 NDT 1956 Sep 2 - -11:00 - NST 1967 Apr # N=Nome - -11:00 - BST 1983 Nov 30 # B=Bering - -11:00 - SST # S=Samoa +# See Pacific/Pago_Pago. # Palmyra # uninhabited since World War II; was probably like Pacific/Kiritimati # Wake -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Wake 11:06:28 - LMT 1901 - 12:00 - WAKT # Wake Time - +# See Pacific/Tarawa. # Vanuatu # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S @@ -753,9 +740,7 @@ Zone Pacific/Efate 11:13:16 - LMT 1912 Jan 13 # Vila 11:00 Vanuatu VU%sT # Vanuatu Time # Wallis and Futuna -# Zone NAME GMTOFF RULES FORMAT [UNTIL] -Zone Pacific/Wallis 12:15:20 - LMT 1901 - 12:00 - WFT # Wallis & Futuna Time +# See Pacific/Tarawa. ############################################################################### diff --git a/northamerica b/northamerica index 66f362b..842f6e4 100644 --- a/northamerica +++ b/northamerica @@ -592,6 +592,7 @@ Zone Pacific/Honolulu -10:31:26 - LMT 1896 Jan 13 12:00 #Schmitt&Cox -10:00 - HST Link Pacific/Honolulu Pacific/Johnston +Link Pacific/Honolulu Pacific/Tahiti # in French Polynesia # Now we turn to US areas that have diverged from the consensus since 1970. -- 1.9.1

9 19

Proposal - territorial coverage of an IANA zone - define, document, enforce
by Tobias Conradi July 10, 2014

July 10, 2014

Proposal 1) Define what territory an IANA zone covers 2) Include the definition in the documentation 3) Enforce the definition If there would be a definition that territories that use different abbreviations shall have different zones, then the merger On Thu, Jul 10, 2014 at 8:41 PM, Paul Eggert <eggert(a)cs.ucla.edu> wrote: > Alan Barrett wrote: >> To the best of my knowledge, most other African countries that share the >> same UTC offset do not use the abbreviation "SAST" > Thanks for catching this; this was indeed an error in the merge, would have violated 3). Is it really true, that starting 2014-07-10 IANA zones are created based on acronym observation? Also "coincidence" as in On Thu, Jul 10, 2014 at 8:39 PM, Paul Eggert <eggert(a)cs.ucla.edu> wrote: > This is a good point, and in some cases in hindsight I went too far in > merging zones that were coincidentally the same would need definition, if one really wants to base territorial extension of IANA zones on such a vaguely defined concept which can lead to decision that may look arbitrary. And arbitrary seems to be the other rule: > This is not a question about optimizing the implementation; it's a question > of having the tz data reflect our knowledge as accurately as the current > format allows. The current format allows to have at least one zone per post-1970 ISO 3166 country and having this would allow to more accurately "reflect our knowledge", namely for abbreviations and for laws. Laws are the main source for observation of a specific standard time in any country. So one could think the territory covered by an IANA zone would at least be a subset of the territory of exactly one jurisdiction named a country in ISO 3166. If acronym observation and "coincidence" are the basis of zoning, I propose to include that in the documentation. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com/

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