- tz - lists.iana.org

Fixes for minor oversights re: Russia changes on 2014-10-26.
by Tim Parenti July 8, 2014

July 8, 2014

There were a few lingering oversights in the patch set distributed earlier; see attached. -- Tim Parenti

2 1

[PATCH1/1] Propose new zone for Crozet Islands
by Antoine Leca July 8, 2014

July 8, 2014

Crozet Islands have a year-round scientific base (Alfred-Faure) since 1964. Also corrected the geographic coordinates. Noticed by Tobias Conradi <http://mm.icann.org/pipermail/tz/2012-May/017804.html> --- antarctica | 8 +++++++- zone.tab | 3 ++- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/antarctica b/antarctica index 9bf2494..7190413 100644 --- a/antarctica +++ b/antarctica @@ -169,7 +169,6 @@ Zone Antarctica/Mawson 0 - zzz 1954 Feb 13 # French Southern Territories with year-round inhabitants # # Martin-de-Vivies Base, Amsterdam Island, -374105+0773155, since 1950 -# Alfred-Faure Base, Crozet Islands, -462551+0515152, since 1964 # Port-aux-Francais, Kerguelen Islands, -492110+0701303, since 1951; # whaling & sealing station operated 1908/1914, 1920/1929, and 1951/1956 # @@ -179,6 +178,13 @@ Zone Antarctica/Mawson 0 - zzz 1954 Feb 13 # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Indian/Kerguelen 0 - zzz 1950 # Port-aux-Francais 5:00 - TFT # ISO code TF Time + +# Alfred-Faure Base, Crozet Islands, -462551+0515125, since 1964 +# sealing & whaling stations operated variously 1802/1911+ +# Zone NAME GMTOFF RULES FORMAT [UNTIL] +Zone Indian/Alfred-Faure 0 - zzz 1963 + 4:00 - AFT # Alfred-Faure Time + # # year-round base in the main continent # Dumont-d'Urville, Ile des Petrels, -6640+14001, since 1956-11 diff --git a/zone.tab b/zone.tab index 6b98520..0f34698 100644 --- a/zone.tab +++ b/zone.tab @@ -373,7 +373,8 @@ SY +3330+03618 Asia/Damascus SZ -2618+03106 Africa/Mbabane TC +2128-07108 America/Grand_Turk TD +1207+01503 Africa/Ndjamena -TF -492110+0701303 Indian/Kerguelen +TF -492110+0701303 Indian/Kerguelen most locations +TF -462551+0515125 Indian/Alfred-Faure Crozet Islands TG +0608+00113 Africa/Lome TH +1345+10031 Asia/Bangkok TJ +3835+06848 Asia/Dushanbe -- 1.8.0.msysgit.0

2 1

[PATCH] * australasia (Pacific/Apia, WS): Move DST data from Zone to Rule lines.
by Paul Eggert July 8, 2014

July 8, 2014

This doesn't change the output, but is shorter and easier to follow. Trim and adjust commentary a bit. --- australasia | 31 +++++++++++-------------------- 1 file changed, 11 insertions(+), 20 deletions(-) diff --git a/australasia b/australasia index 1fd7cb1..605d8dd 100644 --- a/australasia +++ b/australasia @@ -533,7 +533,7 @@ Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5 -11:00 - BST 1983 Nov 30 # B=Bering -11:00 - SST # S=Samoa -# Samoa +# Samoa (formerly and also known as Western Samoa) # From Steffen Thorsen (2009-10-16): # We have been in contact with the government of Samoa again, and received @@ -592,35 +592,26 @@ Zone Pacific/Pago_Pago 12:37:12 - LMT 1879 Jul 5 # Thursday 29th December 2011 23:59:59 Hours # Saturday 31st December 2011 00:00:00 Hours # -# Clarification by Tim Parenti (2012-01-03): -# Although Samoa has used Daylight Saving Time in the 2010-2011 and 2011-2012 -# seasons, there is not yet any indication that this trend will continue on -# a regular basis. For now, we have explicitly listed the transitions below. -# -# From Nicky (2012-09-10): +# From Nicholas Pereira (2012-09-10): # Daylight Saving Time commences on Sunday 30th September 2012 and -# ends on Sunday 7th of April 2013. -# -# Please find link below for more information. +# ends on Sunday 7th of April 2013.... # http://www.mcil.gov.ws/mcil_publications.html # -# That publication also includes dates for Summer of 2013/4 as well -# which give the impression of a pattern in selecting dates for the -# future, so for now, we will guess this will continue. +# From Paul Eggert (2014-07-08): +# That web page currently lists transitions for 2012/3 and 2013/4. +# Assume the pattern instituted in 2012 will continue indefinitely. -# Western Samoa # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S -Rule WS 2012 max - Sep lastSun 3:00 1 D +Rule WS 2010 only - Sep lastSun 0:00 1 D +Rule WS 2011 only - Apr Sat>=1 4:00 0 - +Rule WS 2011 only - Sep lastSat 3:00 1 D Rule WS 2012 max - Apr Sun>=1 4:00 0 - +Rule WS 2012 max - Sep lastSun 3:00 1 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Apia 12:33:04 - LMT 1879 Jul 5 -11:26:56 - LMT 1911 -11:30 - SAMT 1950 # Samoa Time - -11:00 - WST 2010 Sep 26 - -11:00 1:00 WSDT 2011 Apr 2 4:00 - -11:00 - WST 2011 Sep 24 3:00 - -11:00 1:00 WSDT 2011 Dec 29 24:00 - 13:00 1:00 WSDT 2012 Apr Sun>=1 4:00 + -11:00 WS WS%sT 2011 Dec 29 24:00 13:00 WS WS%sT # Solomon Is -- 1.9.1

1 0

Re: [tz] LMT in Moscow before 1919, Kilometre Zero point
by Vladimir Karpinsky July 8, 2014

July 8, 2014

> Zone Europe/Moscow 2:30:20 - LMT 1880 More correct LMT in Moscow (before Jul 3, 1916) is 2:30:17, that was defined by Moscow Observatory (coordinates: 55°45'29.70", 37°34'05.30") so 37°34'05.30" > 2h30m16.35s = 2:30:17, not 2:30:20. > 2:30 - MMT 1916 Jul 3 # Moscow Mean Time 2:30 is not correct. More correct LMT in Moscow since Jul 3, 1916 is 2:31:01 as a result of new standard. (The info is from the book by Byalokoz E.L. New Counting of Time in Russia since July 1, 1919, p. 18.) The time in St.Petersburg as capital of Russia was defined by Pulkov observatory, near St.Petersburg. In 1916 LMT Moscow was synchronized with LMT St.Petersburg (+30 minutes), (Pulkov observatory coordinates: 59°46'18.70", 30°19'40.70") so 30°19'40.70" > 2h01m18.7s = 2:01:19. LMT Moscow = LMT St.Petersburg + 30m 2:01:19 + 0:30 = 2:31:19, not 2:30. > 2:30:48 Russia %s 1919 Jul 1 2:00 2:30:48 is not correct! Probably a popular mistype. It does not correspond to any reference point in Moscow or St.Petersburg. More correct LMT in Moscow is 2:31:19 before July 1, 1919 or 2:30:17 before July 3, 1916. Since July 1, 1919 at 02:00 - Time Zone system established, Moscow time = GMT+2 (plus 2 hours DST) = GMT+4. > RU +5545+03735 Europe/Moscow Moscow+00 - west Russia 03735 is not correct for Moscow, because official center of Moscow is "Kilometre Zero" point: http://en.wikipedia.org/wiki/Kilometre_zero#Russia http://wikimapia.org/71156/Zero-point-or-Kilometre-Zero The coordinates of Kilometre Zero are 55°45'20.82", 37°37'03.47", so more correct would be 55°45', 037°37', not 037°35'. Sincerely, Vladimir Karpinsky Moscow, Russia ----- Original Message ----- From: <tz-request(a)iana.org> To: <tz(a)iana.org> Sent: Sunday, June 01, 2014 4:14 AM Subject: tz Digest, Vol 33, Issue 1 Sent: Tuesday, July 08, 2014 9:27 AM Subject: tz Digest, Vol 34, Issue 13 Sent: Tuesday, July 08, 2014 9:27 AM Subject: tz Digest, Vol 34, Issue 14

1 0

[PATCH] Pacify 'make check_character_set'.
by Paul Eggert July 8, 2014

July 8, 2014

--- asia | 2 +- europe | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/asia b/asia index 321deae..d396111 100644 --- a/asia +++ b/asia @@ -688,7 +688,7 @@ Zone Asia/Hong_Kong 7:36:42 - LMT 1904 Oct 30 # bulletin in Taiwan for that Ordinance No. 529. It also mentioned that 1am on # Sep 21, 1945 will be 12am on Sep 21. I think this bulletin is much more # official than the one I mentioned in my first mail, because it's from the -# top-level government in Taiwan. If you’re going to quote any resource, this +# top-level government in Taiwan. If you're going to quote any resource, this # would be a good one. # [1] Taiwan Governor-General Gazette, No. 1018, Sep 19, 1945: # http://db2.th.gov.tw/db2/view/viewImg.php?imgcode=0072031018a&num=19&bgn=01… diff --git a/europe b/europe index 8c493f3..9b6a502 100644 --- a/europe +++ b/europe @@ -2336,7 +2336,7 @@ Zone Europe/Samara 3:20:36 - LMT 1919 Jul 1 2:00 # 66 RU-SVE Sverdlovsk Oblast # 72 RU-TYU Tyumen Oblast # 74 RU-CHE Chelyabinsk Oblast -# 86 RU-KHM Khanty–Mansi Autonomous Okrug – Yugra +# 86 RU-KHM Khanty-Mansi Autonomous Okrug - Yugra # 89 RU-YAN Yamalo-Nenets Autonomous Okrug # # Note: Effective 2005-12-01, (59) Perm Oblast and (81) Komi-Permyak -- 1.9.1

1 0

Transitions specified for February 29th
by Jon Skeet July 7, 2014

July 7, 2014

I'm just going through my Noda Time <http://nodatime.org> code for time zone handling, and I've noticed I'm being even more defensive than normal, by handling the situation where a time zone transition is specified to occur on the 29th of February - I skip forward or backwards to the nearest leap year. This feels like it's overkill to me, and that it would be better just to prohibit this situation from occurring in my code, *if* it's widely accepted to be invalid data. Is there anything specifying the behaviour if such data is presented? I could try running the zoneinfo compiler myself, but I suspect it would take a long time to get all the tools sorted, and I wouldn't be certain of interpreting the outcome properly. If anyone just *knows,* that would save me a lot of effort :) Jon

2 2

Re: [tz] Fwd: Fwd: [apps-discuss] Proposed working group: Timezone Data Distribution Service (tzdist)
by Barry Leiba July 6, 2014

July 6, 2014

Jon Skeet wrote: > I suppose it's too late to ask them to split "timezone" into "time > zone" everywhere in their documentation etc? Just a minor > peeve, but... Tobias Conradi wrote: > would be nice if you could fix "timezone" to "time zone". I have changed the -04 version of the charter... https://datatracker.ietf.org/doc/charter-ietf-tzdist/ ...accordingly (and I've asked the Secretariat to fix the working group name, which is a field I can't modify). Assuming the working group is chartered, the text of its documents can be similarly fixed as part of its work. And thanks very much for the comments. If you have further comments on the charter, please post them to <apps-discuss(a)ietf.org>, as that's where people are following the charter discussion for now. Time line: The charter is on the agenda for initial IESG approval on Thursday (10 July). Assuming it is approved then, it will go out for "external review", with messages on the ietf-announce and new-work mailing lists (and I'll make sure it's posted here as well). It will then go back to the IESG for final charter approval, which will likely happen on 7 August. Barry, Applications Area Director

1 0

Time zone vs timezone
by Tobias Conradi July 6, 2014

July 6, 2014

was: Re: [tz] Fwd: Fwd: [apps-discuss] Proposed working group: Timezone Data Distribution Service (tzdist) On Thu, Jul 3, 2014 at 5:32 PM, todd <tglassey(a)certichron.com> wrote: > > isnt the term TIMEZONE a term of art specific to Time Keeping as a science? Is it? Like HTTP referer (sic) is one for HTTP referrer? Maybe it only is, because some people thought it should be made so. Me, and probably Jon Skeet are only talking about proper (most us) English: 1) https://books.google.com/ngrams/graph?content=time+zone%2CTime+zone%2Ctimez… 2) http://dictionary.reference.com/browse/timezone 3) http://www.britannica.com/search?query=timezone >So what is the issue - proper English then to hide terms which are specific to this realm? Proper English term to make transparent that there is no conceptual difference between the objects the terms refer to. -- Tobias Conradi Rheinsberger Str. 18 10115 Berlin Germany http://tobiasconradi.com

2 1

About Time Zone in Asia/Taipei During World War 2
by Yu-Cheng Chuang July 4, 2014

July 4, 2014

Hello, I'm Yu-Cheng Chuang, a Taiwanese, and also a programmer. I just studied some knowledge about the time zone, and found that there is a commonly-used database maintained by IANA, which is widely used in our UNIX-like OS as well as software systems. I'm a Rails developer, and the TZInfo library derived from the Time Zone Database helped me a lot when building a time-zone-aware feature. It's really very useful. Thank you for making it. When studying these knowledge, as a Taiwanese, I found that during the Japanese era (1895-1945), time zone in Taiwan was mostly UTC+8 (Western Standard Time). However, during the World War II, as a part of Japan, the Japanese emperor ordered that the whole country should adopt the Central Standard Time (UTC+9), including Taiwan as well as overseas territories occupied later during the war (e.g. Hong Kong, Singapore). In the Time Zone database, I found that such fact is recorded on the time zones of its occupied cities: * Hong Kong * Singapore * Rangoon in Myanmar * Dili in East Timor * Jakarta, Pontianak and Makassar in Indonesia * Kuala Lumpur and Kuching in Malaysia * Manila in Philippines However, here Taipei in Taiwan is missing, which during the World War II was still a territory of Japan, and switched to UTC+9 since Oct 1, 1937. In addition, I see that in the section of Japan, Hideyuki Suzuki mentioned Western Standard Time, which was declared in 1895, in the Meiji 19 year ordinance No. 167. I think its declaration might be due to the annexation of Taiwan. Here is a brief history from Wikipedia (http://en.wikipedia.org/wiki/Japanese_invasion_of_Taiwan_(1895)) * On April 17, 1895, the Qing Dynasty of China ceded Taiwan and Penghu Islands to Japan. * On May 27, 1895, the Japanese army landed Taiwan, the invasion began. * On Nov 18, 1895, the Taiwan General (from Japan) reported "the whole island is capitulated" to the Japan central government. Then, On Dec 28, 1895, the Meiji Emperor announced Ordinance No. 167 of Meiji Year 28 "The clause about standard time", mentioned that Taiwan and Penghu Islands, as well as Yaeyama and Miyako Islands (both in Okinawa) adopt the Western Standard Time which is based on 120E. The adoption began from Jan 1, 1896. (The original text can be found on Wikisource (http://ja.wikisource.org/wiki/%E6%A8%99%E6%BA%96%E6%99%82%E3%83%8B%E9%97%9C…) However I don't know Japanese language very well; the only way I understand it is through Kanji and Google Translate.) This could be the first adoption of time zone in Taiwan, because during the Qing Dynasty, it seems that there was no time zone declared officially. Later, in the beginning of World War II, on Sep 25, 1937, the Showa Emperor announced Ordinance No. 529 of Showa Year 12 "The clause of revision in the ordinance No. 167 of Meiji year 28 about standard time", in which abolished the adoption of Western Standard Time in western islands (listed above), which means the whole Japan territory, including later occupations, adopt Japan Central Time (UTC+9). The adoption began on Oct 1, 1937. (The original text can be found on Wikisource (http://ja.wikisource.org/wiki/%E6%98%8E%E6%B2%BB%E4%BA%8C%E5%8D%81%E5%85%AB….) That is, the time zone of Taipei switched to UTC+9 on Oct 1, 1937. Of course, after the surrender of Japan, time zone of Taiwan switched back to UTC+8. However I can't find enough evidence to tell when the switch happened. The only thing I know is that the official surrender ceremony is on Oct 25, 1945. From then, Taiwan and Penghu islands are territories of the Republic of China, until now. Again, I only know a little bit Japanese, and as a native Chinese speaker, the only words I can read are nouns written in Kanji (Chinese chars). Therefore, I may misunderstand the Japanese ordinances, but I believe I read them mostly correctly because in that time, most Japanese people write Chinese-like Japanese. I think it would be better to have someone who know Japanese read them directly. Please correct me if I misunderstood anything. I hope that the history above helps you improve the Time Zone database. Sincerely, Yu-Cheng Chuang p.s. References from Wikisource: * Ordinance No. 167 of Meiji Year 28: http://ja.wikisource.org/wiki/%E6%A8%99%E6%BA%96%E6%99%82%E3%83%8B%E9%97%9C… * Ordinance No. 529 of Showa Year 12: http://ja.wikisource.org/wiki/%E6%98%8E%E6%B2%BB%E4%BA%8C%E5%8D%81%E5%85%AB…

3 8

China time zones 1949 - 1980: appeal to speakers of Mandarin
by Alois Treindl July 3, 2014

July 3, 2014

tz database holds that People's Republic of China maintained 5 different time zones between the foundation of the PRC in 1949 and May 1980, when the uniform Beijing timezone (GMT + 8h) was introduced. Various sources claim that this unified country-wide timezone was already introduced in 1949 or early 1950: Several TZ mailing list entries, e.g. 10/16/2010 by Jonathan.Hassid(a)uts.edu.au who writes: "The government in Chengdu (capital of Sichuan province) announced the switch (from "Shulong" (Gansu/Sichuan) time) to Beijing time on 27 Dec. 1949. The rest of the country followed "in early 1950" (dates unspecified), and as I mentioned in my last email, "by the beginning of 1950, within a few months after establishing the country, the entire country except for Xinjiang and Tibet was all using the Beijing Time standard." Paul Eckert tried to get an answer from historian Thomas S Mullaney in a correspondence in February 2008, but the question whether China introduced the unified timezone in 1949 or 1980 remained unanswered by Mullaney (he is currently on leave from Stanford and cannot be contacted). The Wikipedia articles 'Time in China' http://en.wikipedia.org/wiki/Time_in_China and 'Historical time zones of China' http://en.wikipedia.org/wiki/Historical_time_zones_of_China hold that the unified timezone was introduced in 1949. They say: "These time zones were no longer in effective use after 1949, in the Chinese Civil War when the People's Republic of China was established on mainland China. The People's Republic of China uses a single time zone (GMT+8) for the whole country," and "After the Chinese Civil War in 1949, the People's Republic of China established one single time zone (UTC+8) for the entirety of its claimed territories, " I could not identify the source reference for this claim by the Wikipedia authors. I tried to contact one of them, User:Alanmak by various means without success. He seemed to me the main contributor regarding China TZ history. This seems to be a relevant source: Guo, Qingsheng (2003) "Beijing Time at the Beginning of PRC", China Historical Materials of Science and Technology 24(1) It is an article in Chinese (it can be purchased online), and I do not know a translator whom I would trust with translation of such technical or historical detail. It seems to me that the only source claiming the continuation of 5 time zones for China is the International Atlas by Shanks and Pottenger. The overall work of these authors is extremely valuable, but they do not give a source for their China information. Paul Eckert says in tz/asia file: # From Paul Eggert (2008-06-30): # There seems to be a good chance China switched to a single time zone in 1949 # rather than in 1980 as Shanks & Pottenger have it, but we don't have a # reliable documentary source saying so yet, so for now we still go with # Shanks & Pottenger. I agree with Paul's opinion and decision, but find it not acceptable to remain at this degree of uncertainty or such a large area, long time period of 31 years and such a large population of hundreds of millions of people: We do NOT reliably know which timezone there was in January 1980 in large cities like Chengdu or Chongqing. I appeal to those readers of the mailing list capable of reading Chinese / mandarin to look for sources which could - document that multiple timezones where indeed maintained before May 1980 (e.g. railway or airline time tables of that period), - document the transition to a unified zone in May 1980 (legal text, newspaper articles mentioning the time change) - document the government decision for a unified timezone in 1949 My gut feeling is that the unified timezone was introduced in 1949, and that Shanks got it wrong. We need documents to establish that.

7 13