- tz - lists.iana.org

first pass at Uyghur time
by Arthur David Olson Nov. 29, 2009

Nov. 29, 2009

Below find a first pass at changes to "zone.tabb" and "asia" to handle Uyghur variants of time in China. The basic approach is to have zones with Han-based names for the rules used by Han, and zones with Uyghur-based names for the rules used by Uyghur. --ado ------- zone.tab ------- *** /tmp/geta21843 Sat Nov 21 10:34:46 2009 --- /tmp/getb21843 Sat Nov 21 10:34:46 2009 *************** *** 1,5 **** # <pre> ! # @(#)zone.tab 8.29 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # --- 1,5 ---- # <pre> ! # @(#)zone.tab 8.30 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. # *************** *** 148,155 **** CN +3114+12128 Asia/Shanghai east China - Beijing, Guangdong, Shanghai, etc. CN +4545+12641 Asia/Harbin Heilongjiang (except Mohe), Jilin CN +2934+10635 Asia/Chongqing central China - Sichuan, Yunnan, Guangxi, Shaanxi, Guizhou, etc. ! CN +4348+08735 Asia/Urumqi most of Tibet & Xinjiang ! CN +3929+07559 Asia/Kashgar west Tibet & Xinjiang CO +0436-07405 America/Bogota CR +0956-08405 America/Costa_Rica CU +2308-08222 America/Havana --- 148,157 ---- CN +3114+12128 Asia/Shanghai east China - Beijing, Guangdong, Shanghai, etc. CN +4545+12641 Asia/Harbin Heilongjiang (except Mohe), Jilin CN +2934+10635 Asia/Chongqing central China - Sichuan, Yunnan, Guangxi, Shaanxi, Guizhou, etc. ! CN +4348+08735 Asia/Urumqi most of Tibet & Xinjiang (offset 6 hours from UTC as base) ! CN +4348+08735 Asia/Wulumuqi most of Tibet & Xinjiang (using Beijing time) ! CN +3929+07559 Asia/Kashgar west Tibet & Xinjiang (offset 6 hours from UTC as base) ! CN +3929+07559 Asia/Kashi west Tibet & Xinjiang (using Beijing time) CO +0436-07405 America/Bogota CR +0956-08405 America/Costa_Rica CU +2308-08222 America/Havana ------- asia ------- *** /tmp/geta21865 Sat Nov 21 10:35:09 2009 --- /tmp/getb21865 Sat Nov 21 10:35:09 2009 *************** *** 1,4 **** ! # @(#)asia 8.44 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,4 ---- ! # @(#)asia 8.45 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 355,374 **** # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin, # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami, # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan. ! Zone Asia/Urumqi 5:50:20 - LMT 1928 # or Urumchi ! 6:00 - URUT 1980 May # Urumqi Time ! 8:00 PRC C%sT # Kunlun Time # West Tibet, including Pulan, Aheqi, Shufu, Shule; # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke, # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding, # and Yarkand. ! Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar ! 5:30 - KAST 1940 # Kashgar Time 5:00 - KAST 1980 May 8:00 PRC C%sT # From Lee Yiu Chung (2009-10-24): # I found there are some mistakes for the historial DST rule for Hong # Kong. Accoring to the DST record from Hong Kong Observatory (actually, --- 355,456 ---- # Wusu, Qiemo, Xinyan, Wulanwusu, Jinghe, Yumin, Tacheng, Tuoli, Emin, # Shihezi, Changji, Yanqi, Heshuo, Tuokexun, Tulufan, Shanshan, Hami, # Fukang, Kuitun, Kumukuli, Miquan, Qitai, and Turfan. ! # Kunlun Time # West Tibet, including Pulan, Aheqi, Shufu, Shule; # West Xinjiang, including Aksu, Atushi, Yining, Hetian, Cele, Luopu, Nileke, # Zhaosu, Tekesi, Gongliu, Chabuchaer, Huocheng, Bole, Pishan, Suiding, # and Yarkand. ! ! # From Luther Ma (2009-10-17): ! # Almost all (>99.9%) ethnic Chinese (properly ethnic Han) living in ! # Xinjiang use Chinese Standard Time. Some are aware of Xinjiang time, ! # but have no need of it. All planes, trains, and schools function on ! # what is called "Beijing time." When Han make an appointment in Chinese ! # they implicitly use Beijing time. ! # ! # On the other hand, ethnic Uyghurs, who make up about half the ! # population of Xinjiang, typically use "Xinjiang time" which is two ! # hours behind Beijing time, or UTC +0600. The government of the Xinjiang ! # Uyghur Autonomous Region, (XAUR, or just Xinjiang for short) as well as ! # local governments such as the Urumqi city government use both times in ! # publications, referring to what is popularly called Xinjiang time as ! # "Urumqi time." When Uyghurs make an appointment in the Uyghur language ! # they almost invariably use Xinjiang time. ! # ! # (Their ethnic Han compatriots would typically have no clue of its ! # widespread use, however, because so extremely few of them are fluent in ! # Uyghur, comparable to the number of Anglo-Americans fluent in Navajo.) ! # ! # (...As with the rest of China there was a brief interval ending in 1990 ! # or 1991 when summer time was in use. The confusion was severe, with ! # the province not having dual times but four times in use at the same ! # time. Some areas remained on standard Xinjiang time or Beijing time and ! # others moving their clocks ahead.) ! # ! # ...an example of an official website using of Urumqi time. ! # ! # The first few lines of the Google translation of ! # <a href="http://www.fjysgl.gov.cn/show.aspx?id=2379&cid=39"> ! # http://www.fjysgl.gov.cn/show.aspx?id=2379&cid=39 ! # </a> ! # (retrieved 2009-10-13) ! # > Urumqi fire seven people are missing the alleged losses of at least ! # > 500 million yuan ! # > ! # > (Reporter Dong Liu) the day before 20:20 or so (Urumqi Time 18:20), ! # > Urumqi City Department of International Plaza Luther Qiantang River ! # > burst fire. As of yesterday, 18:30, Urumqi City Fire officers and men ! # > have worked continuously for 22 hours... ! ! # From Luther Ma (2009-11-19): ! # With the risk of being redundant to previous answers these are the most common ! # English "transliterations" (w/o using non-English symbols): ! # ! # 1. Wulumuqi... ! # 2. Kashi... ! # 3. Urumqi... ! # 4. Kashgar... ! # ... ! # 5. It seems that Uyghurs in Urumqi has been using Xinjiang since at least the ! # 1960's. I know of one Han, now over 50, who grew up in the surrounding ! # countryside and used Xinjiang time as a child. ! # ! # 6. Likewise for Kashgar and the rest of south Xinjiang I don't know of any ! # start date for Xinjiang time. ! # ! # Without having access to local historical records, nor the ability to legally ! # publish them, I would go with October 1, 1949, when Xinjiang became the Uyghur ! # Autonomous Region under the PRC. (Before that Uyghurs, of course, would also ! # not be using Beijing time, but some local time.) ! ! # From Arthur David Olson (2009-11-21) ! # Use English transliterations of Han names of cities for names of zones using Han approaches; ! # use English transliterations of Uyghur names of cities for names of zones using Uyghur approaches. ! # Since (reportedly) at least some Uyghur have observed Beijing DST rules, ! # use PRC rules for Uyghur zones. ! ! # First the Han... ! ! Zone Asia/Wulumuqi 5:50:20 - LMT 1928 ! 6:00 - WULT 1980 May # Wulumuqi Time ! 8:00 PRC C%sT ! ! Zone Asia/Kashi 5:03:56 - LMT 1928 ! 5:30 - KAST 1940 # Kashi time 5:00 - KAST 1980 May 8:00 PRC C%sT + # ...and then the Uyghur... + Zone Asia/Urumqi 5:50:20 - LMT 1928 # or Urumchi + 6:00 PRC XIN%sT # Xinjiang Time + + Zone Asia/Kashgar 5:03:56 - LMT 1928 + 5:30 - KAST 1940 # Kashgar time + 5:00 - KAST 1949 Oct 1 + 6:00 PRC XIN%sT # Xinjiang Time + # From Lee Yiu Chung (2009-10-24): # I found there are some mistakes for the historial DST rule for Hong # Kong. Accoring to the DST record from Hong Kong Observatory (actually,

5 5

Guatemala may observe DST in 2010
by Steffen Thorsen Nov. 24, 2009

Nov. 24, 2009

According to many news sources, Guatemala may observe DST again in 2010. The proposal is to observe DST from April 3 to October 30: http://www.prensalibre.com.gt/pl/2009/noviembre/18/356771.html We will keep this page updated: http://www.timeanddate.com/news/time/guatemala-considers-dst.html Best regards, Steffen Thorsen - timeanddate.com

1 0

Re: Xinjiang
by Olson, Arthur David (NIH/NCI) [E] Nov. 20, 2009

Nov. 20, 2009

As I understand it, there are two groups (Han and Uyghur) in two different current time zone regions ("Asia/Urumqi" and "Asia/Kashgar") using different times. A blessing: nobody involved currently does daylight saving. Since DST is not in effect, a workaround is to set the environment variable, either... TZ=XJT-6 ...or... TZ=XST-6 ...to get the desired effect. Here are questions to be answered prior to setting up zones in the "asia" file: 1. What's the English translation of the Han name of the city with the largest Han population in Asia/Urumqi? 2. What's the English translation of the Han name of the city with the largest Han population in Asia/Kashgar? 3. What's the English translation of the Uyghur name of the city with the largest Uyghur population in Asia/Urumqi? 4. What's the English translation of the Uyghur name of the city with the largest Uyghur population in Asia/Urumqi? 5. When exactly did the Asia/Urumqi Uyghurs start using their own distinct time? 6. When exactly did the Asia/Kashgar Uyghurs start using their own distinct time? The path forward depends on the answers to the above questions. --ado

8 15

Re: Xinjiang
by Olson, Arthur David (NIH/NCI) [E] Nov. 18, 2009

Nov. 18, 2009

As I understand it, there are two groups (Han and Uyghur) in two different current time zone regions ("Asia/Urumqi" and "Asia/Kashgar") using different times. A blessing: nobody involved currently does daylight saving. Since DST is not in effect, a workaround is to set the environment variable, either... TZ=XJT-6 ...or... TZ=XST-6 ...to get the desired effect. Here are questions to be answered prior to setting up zones in the "asia" file: 1. What's the English translation of the Han name of the city with the largest Han population in Asia/Urumqi? 2. What's the English translation of the Han name of the city with the largest Han population in Asia/Kashgar? 3. What's the English translation of the Uyghur name of the city with the largest Uyghur population in Asia/Urumqi? 4. What's the English translation of the Uyghur name of the city with the largest Uyghur population in Asia/Urumqi? 5. When exactly did the Asia/Urumqi Uyghurs start using their own distinct time? 6. When exactly did the Asia/Kashgar Uyghurs start using their own distinct time? The path forward depends on the answers to the above questions. --ado

1 0

Correction for Africa 2009r
by David Stonehill Nov. 18, 2009

Nov. 18, 2009

Thank you for the outstanding work you are doing on time zone history and definitions. It is unique on the web. In tz version 2009r, africa, the Rules for Mauritius and the Zone for Indian/Mauritius all need a tab character between the word "Rule" or "Zone" and the following arguments Inserting this character will make these lines consistent with other similar lines in the file. Thanks again. Dave Stonehill

2 1

FW: Correction for Africa 2009r
by Olson, Arthur David (NIH/NCI) [E] Nov. 18, 2009

Nov. 18, 2009

I'm forwarding this message from Dave Stonehill, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado -----Original Message----- From: David Stonehill [mailto:stonehdl@muohio.edu] Sent: Tuesday, November 17, 2009 3:41 To: tz(a)lecserver.nci.nih.gov Subject: Correction for Africa 2009r Thank you for the outstanding work you are doing on time zone history and definitions. It is unique on the web. In tz version 2009r, africa, the Rules for Mauritius and the Zone for Indian/Mauritius all need a tab character between the word "Rule" or "Zone" and the following arguments Inserting this character will make these lines consistent with other similar lines in the file. Thanks again. Dave Stonehill

1 0

Asia/Krasnoyarsk GMT offset wrong?
by Deborah Goldsmith Nov. 16, 2009

Nov. 16, 2009

I received a bug report with the following claim for this time zone: > Expected Results: > 1. If Asia/Krasnoyarsk is in standard time, should be 21600 (GMT +6) > 2. If Asia/Krasnoyarsk is in daylight savings time, should be 25200 (GMT +7) > > Actual Results: > 1. Standard time returns 25200 (GMT +7) > 2. Daylight savings time returns 28800 (GMT +8) > I see in the europe file (today’s version, 2009s) that the base offset is indeed +7. So, does anyone know if this is correct? Thanks, Deborah Goldsmith Apple Inc. goldsmit(a)apple.com

4 5

FW: tzdata2009s
by Olson, Arthur David (NIH/NCI) [E] Nov. 16, 2009

Nov. 16, 2009

I'm forwarding this message from Nicolas Alavarez, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. (With seven letters of the alphabet left and only six Mondays left in 2009--Monday being the usual day of the week when the ftp version is updated--reaching z is unlikely this year. And we've never reached z in the past.) --ado -----Original Message----- From: news [mailto:news@ger.gmane.org] On Behalf Of Nicolas Alvarez Sent: Monday, November 16, 2009 2:03 To: tz(a)lecserver.nci.nih.gov Subject: Re: tzdata2009s Olson, Arthur David (NIH/NCI) [E] wrote: > The file... > ftp://elsie.nci.nih.gov/pub/tzdata2009s.tar.gz > ...is now available; this reflects the (cosmetic) Antarctica change and > the DST-in-Fiji-in-2009-and-2010 change circulated on the time zone > mailing list last week. What happens if we reach 'z' before the year is over?

2 1

tzdata2009s
by Olson, Arthur David (NIH/NCI) [E] Nov. 16, 2009

Nov. 16, 2009

The file... ftp://elsie.nci.nih.gov/pub/tzdata2009s.tar.gz ...is now available; this reflects the (cosmetic) Antarctica change and the DST-in-Fiji-in-2009-and-2010 change circulated on the time zone mailing list last week. --ado

2 1

proposed time zone packages for Antarctica (cosmetic) and Fiji
by Arthur David Olson Nov. 14, 2009

Nov. 14, 2009

Below are proposed changes to "australia" (for Fiji's use of DST in 2009-2010) and "antarctica" (changing a "2:0" in one of the rules to "2:00", which does not change zic's binary output). To give the Fiji change a chance to make it out in to the field before the effective date at the end of this month, these changes will appear on the ftp site on 2009-11-16 unless problems are found. --ado ------- australasia ------- *** /tmp/geta8698 Sat Nov 14 10:26:25 2009 --- /tmp/getb8698 Sat Nov 14 10:26:25 2009 *************** *** 1,5 **** # <pre> ! # @(#)australasia 8.14 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)australasia 8.15 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 248,256 **** --- 248,277 ---- 6:30 - CCT # Cocos Islands Time # Fiji + # From Alexander Krivenyshev (2009-11-10): + # According to Fiji Broadcasting Corporation, Fiji plans to re-introduce DST + # from November 29th 2009 to April 25th 2010. + # + # "Daylight savings to commence this month" + # <a href="http://www.radiofiji.com.fj/fullstory.php?id=23719"> + # http://www.radiofiji.com.fj/fullstory.php?id=23719 + # </a> + # or + # <a href="http://www.worldtimezone.com/dst_news/dst_news_fiji01.html"> + # http://www.worldtimezone.com/dst_news/dst_news_fiji01.html + # </a> + + # From Steffen Thorsen (2009-11-10): + # The Fiji Government has posted some more details about the approved + # amendments: + # <a href="http://www.fiji.gov.fj/publish/page_16198.shtml"> + # http://www.fiji.gov.fj/publish/page_16198.shtml + # </a> # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Fiji 1998 1999 - Nov Sun>=1 2:00 1:00 S Rule Fiji 1999 2000 - Feb lastSun 3:00 0 - + Rule Fiji 2009 only - Nov 29 2:00 1:00 S + Rule Fiji 2010 only - Apr 25 3:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Pacific/Fiji 11:53:40 - LMT 1915 Oct 26 # Suva 12:00 Fiji FJ%sT # Fiji Time ------- antarctica ------- *** /tmp/geta8719 Sat Nov 14 10:26:48 2009 --- /tmp/getb8719 Sat Nov 14 10:26:48 2009 *************** *** 1,5 **** # <pre> ! # @(#)antarctica 8.6 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)antarctica 8.7 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 106,112 **** Zone Antarctica/Davis 0 - zzz 1957 Jan 13 7:00 - DAVT 1964 Nov # Davis Time 0 - zzz 1969 Feb ! 7:00 - DAVT 2009 Oct 18 2:0 5:00 - DAVT Zone Antarctica/Mawson 0 - zzz 1954 Feb 13 6:00 - MAWT 2009 Oct 18 2:00 --- 106,112 ---- Zone Antarctica/Davis 0 - zzz 1957 Jan 13 7:00 - DAVT 1964 Nov # Davis Time 0 - zzz 1969 Feb ! 7:00 - DAVT 2009 Oct 18 2:00 5:00 - DAVT Zone Antarctica/Mawson 0 - zzz 1954 Feb 13 6:00 - MAWT 2009 Oct 18 2:00

1 0