- tz - lists.iana.org

2009t
by Olson, Arthur David (NIH/NCI) [E] Dec. 21, 2009

Dec. 21, 2009

The files... ftp://elsie.nci.nih.gov/pub/tzcode2009t.tar.gz ...and... ftp://elsie.nci.nih.gov/pub/tzdata2009t.tar.gz ...are now available; these reflect the changes circulated last week on the time zone mailing list. --ado

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London and Dublin zone definitions
by Danvin Ruangchan Dec. 17, 2009

Dec. 17, 2009

Hey all, Is there a reason why the Europe/London and Europe/Dublin Zone definitions are outside the "Europe" section that starts on line # 449 in the "europe" data file? For consistency sake, shouldn't those two sections be moved under the "Europe" section where the DST Rule for "EU" is defined? thanks danvin

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Help With Understanding the Binary Files
by Bill Seymour Dec. 14, 2009

Dec. 14, 2009

Could somebody please help me interpret the tz binary files? I'm having trouble understanding what to do with the two arrays that follow the leap second array. 1. tzfile.h says that they're "indexed by type"; but I don't see anything in the "type" (which I take to mean what tzfile.5 calls "struct ttinfo") that could be used as such an index. Does "indexed by type" mean "having the same index as the type", in other words, the value from the array following the transition time array? 2. tzfile.h seems to imply that these booleans indicate how I should interpret the values in the array of transition times. Is that correct? If so, how do I calculate standard time while DST is being observed given that the SAVE column in the Rule has been lost? Do I assume that the offset for DST is always exactly 1 hour? What about solar89, etc.? 3. tzfile.5 says that these "are used when a time zone file is used in handling POSIX-style time zone environment variables." Does that mean that the "transition times" are the ones in the TZ variable, not the array of transition times in the file (so my question 2 is moot)? I'm very confused. 8-( Thanks, --Bill Seymour

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proposed time zone package changes
by Arthur David Olson Dec. 12, 2009

Dec. 12, 2009

Below are proposed changes to the time zone package; none of these changes affect binary files. The executive summary: Theory "Calendrical Calculations" updated (thanks to Steve Ward). asia Hong Kong comments corrected; Xinjiang comments added. europe Russian region comments updated (thanks to Oscar van Vlijmen) tz-art.htm Added Luciana Souza's "Tide." tz-link.htm Added "Simple Timer + Clocks" (thanks to George Bradt). tzfile.5 Typo fixed (thanks to Steve Ward). zone.tab version change only If no problems are found, these changes will appear in the ftpable packages on 2009-12-21. --ado diff -r -c old/Theory new/Theory *** old/Theory Wed Oct 21 09:12:41 2009 --- new/Theory Sat Dec 12 09:11:32 2009 *************** *** 1,4 **** ! @(#)Theory 8.3 This file is in the public domain, so clarified as of 2009-05-17 by Arthur David Olson. --- 1,4 ---- ! @(#)Theory 8.4 This file is in the public domain, so clarified as of 2009-05-17 by Arthur David Olson. *************** *** 360,369 **** Calendrical issues are a bit out of scope for a time zone database, but they indicate the sort of problems that we would run into if we extended the time zone database further into the past. An excellent ! resource in this area is Edward M. Reingold and Nachum Dershowitz, ! <a href="http://emr.cs.uiuc.edu/home/reingold/calendar-book/second-edition/"> ! Calendrical Calculations: The Millennium Edition ! </a>, Cambridge University Press (2001). Other information and sources are given below. They sometimes disagree. --- 360,369 ---- Calendrical issues are a bit out of scope for a time zone database, but they indicate the sort of problems that we would run into if we extended the time zone database further into the past. An excellent ! resource in this area is Nachum Dershowitz and Edward M. Reingold, ! <a href="http://emr.cs.iit.edu/home/reingold/calendar-book/third-edition/"> ! Calendrical Calculations: Third Edition ! </a>, Cambridge University Press (2008). Other information and sources are given below. They sometimes disagree. diff -r -c old/asia new/asia *** old/asia Thu Oct 29 07:12:14 2009 --- new/asia Sat Dec 12 08:39:40 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 8.48 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 363,368 **** --- 363,431 ---- # 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.) + Zone Asia/Kashgar 5:03:56 - LMT 1928 # or Kashi or Kaxgar 5:30 - KAST 1940 # Kashgar Time 5:00 - KAST 1980 May *************** *** 370,377 **** # 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, # it is not [an] observatory, but the official meteorological agency of HK, # and also serves as the official timing agency), there are some missing # and incorrect rules. Although the exact switch over time is missing, I --- 433,440 ---- # From Lee Yiu Chung (2009-10-24): ! # I found there are some mistakes for the...DST rule for Hong ! # Kong. [According] to the DST record from Hong Kong Observatory (actually, # it is not [an] observatory, but the official meteorological agency of HK, # and also serves as the official timing agency), there are some missing # and incorrect rules. Although the exact switch over time is missing, I diff -r -c old/europe new/europe *** old/europe Thu Oct 29 07:14:18 2009 --- new/europe Sat Dec 12 10:02:17 2009 *************** *** 1,5 **** # <pre> ! # @(#)europe 8.24 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)europe 8.25 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 2130,2141 **** # From Oscar van Vlijmen (2003-10-18): [This region consists of] # Aginskij Buryatskij avtonomnyj okrug, Amurskaya oblast', # [parts of] Respublika Sakha (Yakutiya), Chitinskaya oblast'. # The Sakha districts are: Aldanskij, Amginskij, Anabarskij, ! # Bulunskij, Verkhnekolymskij, Verkhnevilyujskij, Vilyujskij, Gornyj, # Zhiganskij, Kobyajskij, Lenskij, Megino-Kangalasskij, Mirninskij, ! # Namskij, Nyurbinskij, Olenekskij, Olekminskij, Srednekolymskij, # Suntarskij, Tattinskij, Ust'-Aldanskij, Khangalasskij, ! # Churapchinskij, Eveno-Bytantajskij. Zone Asia/Yakutsk 8:38:40 - LMT 1919 Dec 15 8:00 - YAKT 1930 Jun 21 # Yakutsk Time 9:00 Russia YAK%sT 1991 Mar 31 2:00s --- 2130,2149 ---- # From Oscar van Vlijmen (2003-10-18): [This region consists of] # Aginskij Buryatskij avtonomnyj okrug, Amurskaya oblast', # [parts of] Respublika Sakha (Yakutiya), Chitinskaya oblast'. + + # From Oscar van Vlijmen (2009-11-29): + # ...some regions of RUssia were merged with others since 2005... + # Some names were changed, no big deal, except for one instance: a new name. + # YAK/YAKST: UTC+9 Zabajkal'skij kraj. + + # From Oscar van Vlijmen (2009-11-29): # The Sakha districts are: Aldanskij, Amginskij, Anabarskij, ! # Verkhnevilyujskij, Vilyujskij, Gornyj, # Zhiganskij, Kobyajskij, Lenskij, Megino-Kangalasskij, Mirninskij, ! # Namskij, Nyurbinskij, Olenyokskij, Olyokminskij, # Suntarskij, Tattinskij, Ust'-Aldanskij, Khangalasskij, ! # Churapchinskij, Eveno-Bytantajskij Natsional'nij. ! Zone Asia/Yakutsk 8:38:40 - LMT 1919 Dec 15 8:00 - YAKT 1930 Jun 21 # Yakutsk Time 9:00 Russia YAK%sT 1991 Mar 31 2:00s *************** *** 2145,2151 **** # From Oscar van Vlijmen (2003-10-18): [This region consists of] # Evrejskaya avtonomnaya oblast', Khabarovskij kraj, Primorskij kraj, # [parts of] Respublika Sakha (Yakutiya). ! # The Sakha districts are: Verkhoyanskij, Tomponskij, Ust'-Majskij, # Ust'-Yanskij. Zone Asia/Vladivostok 8:47:44 - LMT 1922 Nov 15 9:00 - VLAT 1930 Jun 21 # Vladivostok Time --- 2153,2161 ---- # From Oscar van Vlijmen (2003-10-18): [This region consists of] # Evrejskaya avtonomnaya oblast', Khabarovskij kraj, Primorskij kraj, # [parts of] Respublika Sakha (Yakutiya). ! ! # From Oscar van Vlijmen (2009-11-29): ! # The Sakha districts are: Bulunskij, Verkhoyanskij, Tomponskij, Ust'-Majskij, # Ust'-Yanskij. Zone Asia/Vladivostok 8:47:44 - LMT 1922 Nov 15 9:00 - VLAT 1930 Jun 21 # Vladivostok Time *************** *** 2166,2173 **** # From Oscar van Vlijmen (2003-10-18): [This region consists of] # Magadanskaya oblast', Respublika Sakha (Yakutiya). # Probably also: Kuril Islands. ! # The Sakha districts are: Abyjskij, Allaikhovskij, Momskij, ! # Nizhnekolymskij, Ojmyakonskij. Zone Asia/Magadan 10:03:12 - LMT 1924 May 2 10:00 - MAGT 1930 Jun 21 # Magadan Time 11:00 Russia MAG%sT 1991 Mar 31 2:00s --- 2176,2185 ---- # From Oscar van Vlijmen (2003-10-18): [This region consists of] # Magadanskaya oblast', Respublika Sakha (Yakutiya). # Probably also: Kuril Islands. ! ! # From Oscar van Vlijmen (2009-11-29): ! # The Sakha districts are: Abyjskij, Allaikhovskij, Verkhhhnekolymskij, Momskij, ! # Nizhnekolymskij, Ojmyakonskij, Srednekolymskij. Zone Asia/Magadan 10:03:12 - LMT 1924 May 2 10:00 - MAGT 1930 Jun 21 # Magadan Time 11:00 Russia MAG%sT 1991 Mar 31 2:00s diff -r -c old/tz-art.htm new/tz-art.htm *** old/tz-art.htm Wed Oct 28 13:19:00 2009 --- new/tz-art.htm Sat Dec 12 10:04:50 2009 *************** *** 9,15 **** <body> <h1>Time and the Arts</h1> <address> ! @(#)tz-art.htm 8.14 </address> <p> This file is in the public domain, so clarified as of --- 9,15 ---- <body> <h1>Time and the Arts</h1> <address> ! @(#)tz-art.htm 8.15 </address> <p> This file is in the public domain, so clarified as of *************** *** 227,233 **** --- 227,245 ---- <tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:gifqxqt5ld0e">AMG Rating</a></td><td>4.5 stars</td></tr> <tr><td>ADO Rating</td><td>1.5 stars</td></tr> <tr><td>Notes<td>The title song is also available on "Bob Dylan's Greatest Hits" and "The Essential Bob Dylan."</td></tr> + <tr><td> </td></tr> + <tr><td>Artist</td><td>Luciana Souza</td></tr> + <tr><td>CD</td><td>Tide</td></tr> + <tr><td>Copyright Date</td><td>2009</td></tr> + <tr><td>Label</td><td>Universal Jazz France</td></tr> + <tr><td>ID</td><td>B0012688-02</td></tr> + <tr><td>Total Time</td><td>42:31</td></tr> + <tr><td><a href="http://www.allmusic.com/cg/amg.dll?p=amg&sql=10:3bftxzw0ldhe"</a>AMG Rating</a></td><td>3.5 stars</td></tr> + <tr><td>ADO Rating</td><td>2.5 stars</td></tr> + <tr><td>Notes<td>Includes the song "Fire and Wood" with the lyric + "The clocks were turned back you remeber/Think it's still November." + </td></tr> <tr><td> </td></tr> <tr><td>TV episode title</td><td>The Lost Hour</td> diff -r -c old/tz-link.htm new/tz-link.htm *** old/tz-link.htm Wed Nov 4 10:00:47 2009 --- new/tz-link.htm Sat Dec 12 09:39:02 2009 *************** *** 18,24 **** <body> <h1>Sources for Time Zone and Daylight Saving Time Data</h1> <address> ! @(#)tz-link.htm 8.23 </address> <p> This file is in the public domain, so clarified as of --- 18,24 ---- <body> <h1>Sources for Time Zone and Daylight Saving Time Data</h1> <address> ! @(#)tz-link.htm 8.24 </address> <p> This file is in the public domain, so clarified as of *************** *** 149,154 **** --- 149,157 ---- <li>The <a href="http://worldtimeengine.com/">World Time Engine</a> also contains data about time zone boundaries; it supports queries via place names and shows location maps.</li> + <li><a href="http://simpletimerclocks.mozdev.org/">Simple Timer + Clocks</a> + is a Firefox add-on which uses a timezone data file generated from the + tz data files.</li> </ul> <h2>Other time zone database formats</h2> <ul> diff -r -c old/tzfile.5 new/tzfile.5 *** old/tzfile.5 Wed Oct 21 09:12:42 2009 --- new/tzfile.5 Sat Dec 12 09:05:09 2009 *************** *** 7,13 **** .SH DESCRIPTION The time zone information files used by .IR tzset (3) ! begin with the magic characters "TZif" to identify then as time zone information files, followed by a character identifying the version of the file's format (as of 2005, either an ASCII NUL or a '2') --- 7,13 ---- .SH DESCRIPTION The time zone information files used by .IR tzset (3) ! begin with the magic characters "TZif" to identify them as time zone information files, followed by a character identifying the version of the file's format (as of 2005, either an ASCII NUL or a '2') *************** *** 147,152 **** such instants). .SH SEE ALSO newctime(3) ! .\" @(#)tzfile.5 8.2 .\" This file is in the public domain, so clarified as of .\" 1996-06-05 by Arthur David Olson. --- 147,152 ---- such instants). .SH SEE ALSO newctime(3) ! .\" @(#)tzfile.5 8.3 .\" This file is in the public domain, so clarified as of .\" 1996-06-05 by Arthur David Olson. diff -r -c old/zone.tab new/zone.tab *** old/zone.tab Thu Oct 29 07:12:00 2009 --- new/zone.tab Sat Dec 12 09:57:09 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 8.31 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. #

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Question regarding America/Manaus timezone
by Alain Petit Dec. 11, 2009

Dec. 11, 2009

Hi [This is a resending due to issues with the email address I sent to. I apologize if you receive it in double] Looking into some timezone information I have the following interrogation, and I am unsure if my interpretation of the file is wrong, or if the rules are wrong... This comes from tzdata2009s, southamerica file The rules are # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Brazil 2008 max - Oct Sun>=15 0:00 1:00 S Rule Brazil 2008 2011 - Feb Sun>=15 0:00 0 - Rule Brazil 2012 only - Feb Sun>=22 0:00 0 - Rule Brazil 2013 2014 - Feb Sun>=15 0:00 0 - The Timezone # # east Amazonas (AM): Boca do Acre, Jutai, Manaus, Floriano Peixoto # The great circle line from Tabatinga to Porto Acre divides # east from west Amazonas. Zone America/Manaus -4:00:04 - LMT 1914 -4:00 Brazil AM%sT 1988 Sep 12 -4:00 - AMT 1993 Sep 28 -4:00 Brazil AM%sT 1994 Sep 22 -4:00 - AMT >From what I understand from the above, America/Manaus does not observe DST ever since Sep 22, 1994. However, looking at the Microsoft Timezone definition [Dec 2009 update] for (GMT -4:00) Manaus [Central Brazilian Standard Time] the timezone observe DST from 3rd Saturday of October 23:59:59 to 3rd Saturday of February, 23:59:59. Also, another non-official site seems to imply the same: [http://www.icfsi2007.com/city_more.php will show Time Manaus Time Zone is 1 hour less than Brasilia, Sao Paulo or Rio de Janeiro Time Zone (GMT - 03:00), four hours behind of Greenwich Mean Time (GMT), except during the period between late October and the end of February, when daylight saving time is in force (GMT - 05:00 hours). ] So either a) I do not interpret the timezone rules properly for America/Manaus, and there is a DST being observed there. If so, please let me know how I should read the above rules/timezone information. b) Microsoft timezone is incorrect c) Olson data is incorrect d) The Microsoft timezone [(GMT -4:00) Manaus - Central Brazilian Standard Time] does not correspond to the Olson's America/Manaus timezone Your opinion would be appreciated Thanks -Alain Petit

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Re: Xinjiang
by Olson, Arthur David (NIH/NCI) [E] Dec. 8, 2009

Dec. 8, 2009

Given the note about how "putting ethnic labels on the time zones may be somewhat divisive in an already very unhappy and divisive time," can someone come up with a better approach to the Xinjiang situation than the "first pass" sent out on the list last month? I'll hold off on making any changes until we have something better. --ado

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NYT: In Russia, New Times Are Reason for Debate
by Eric Muller Dec. 7, 2009

Dec. 7, 2009

"In Russia, New Times Are Reason for Debate" http://www.nytimes.com/2009/12/07/world/europe/07zones.html?_r=1&emc=eta1 Also points to a 2000 article, "Defiant Chinese Muslims Keep Their Own Time" http://www.nytimes.com/2000/11/19/world/defiant-chinese-muslims-keep-their-… Eric.

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tzfile.5 typo
by Steve Ward Dec. 6, 2009

Dec. 6, 2009

I was looking in tzcode2009r and I found a typo in tzfile.5. A diff is attached. Steve Ward

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updated resource in Theory file
by Steve Ward Dec. 6, 2009

Dec. 6, 2009

A new edition of Calendrical Calculations was published last year. A diff is attached. Steve Ward

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FW: Tzdata2009s - Pacific/Fiji
by Olson, Arthur David (NIH/NCI) [E] Dec. 3, 2009

Dec. 3, 2009

I'm forwarding this message from Sonali Rajput who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. --ado From: S R [mailto:sonali.rajput@gmail.com] Sent: Thursday, December 03, 2009 5:39 To: tz(a)lecserver.nci.nih.gov Subject: Tzdata2009s - Pacific/Fiji Hi, We are using the olson DB tzdata2009s for java. When testing Fiji, we encountered a problem where the TZ isn't reporting The DST changes properly. The following is the test case : ------------------------- import java.util.*; public class TZ { public static void main(String args[]) { TimeZone tz = TimeZone.getTimeZone("Pacific/Fiji"); System.out.println("tz---"+tz); } } --------------------------- Once run this gives : tz---sun.util.calendar.ZoneInfo[id="Pacific/Fiji",offset=43200000,dstSavings=0,useDaylight=false,transitions=9,lastRule=null] Java itself works fine for other timezones showing correct DST (eg : For Israel it gives): tz---sun.util.calendar.ZoneInfo[id="Israel",offset=7200000,dstSavings=3600000,useDaylight=true,transitions=143,lastRule=java.util.SimpleTimeZone[id=Israel,offset=7200000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=26,startDayOfWeek=6,startTime=7200000,startTimeMode=0,endMode=1,endMonth=8,endDay=13,endDayOfWeek=0,endTime=7200000,endTimeMode=0]] We should get a similar result for Pacific/Fiji Thanks Sonali

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Tzdata2009s - Pacific/Fiji
by S R Dec. 3, 2009

Dec. 3, 2009

Hi, We are using the olson DB tzdata2009s for java. When testing Fiji, we encountered a problem where the TZ isn't reporting The DST changes properly. The following is the test case : ------------------------- import java.util.*; public class TZ { public static void main(String args[]) { TimeZone tz = TimeZone.getTimeZone("Pacific/Fiji"); System.out.println("tz---"+tz); } } --------------------------- Once run this gives : tz---sun.util.calendar.ZoneInfo[id="Pacific/Fiji",offset=43200000,dstSavings=0,useDaylight=false,transitions=9,lastRule=null] Java itself works fine for other timezones showing correct DST (eg : For Israel it gives): tz---sun.util.calendar.ZoneInfo[id="Israel",offset=7200000,dstSavings=3600000,useDaylight=true,transitions=143,lastRule=java.util.SimpleTimeZone[id=Israel,offset=7200000,dstSavings=3600000,useDaylight=true,startYear=0,startMode=3,startMonth=2,startDay=26,startDayOfWeek=6,startTime=7200000,startTimeMode=0,endMode=1,endMonth=8,endDay=13,endDayOfWeek=0,endTime=7200000,endTimeMode=0]] We should get a similar result for Pacific/Fiji Thanks Sonali

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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,

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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

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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

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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

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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

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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

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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

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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?

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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

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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

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Russia may reduce 11 time zones to less.
by Alexander Krivenyshev Nov. 14, 2009

Nov. 14, 2009

Russia may reduce number of time zones from 11 to less. RIA Novosti (Russian Information Agency Novosti), Russian President Dmitry Medvedev proposed on Thursday to consider cutting the number of time zones in the country, which spans 11 time zones. (in Russian) http://lenta.ru/news/2009/11/12/time/ or (in English) http://en.rian.ru/russia/20091112/156806943.html http://www.worldtimezone.com/dst_news/dst_news_russia05.html Alexander Krivenyshev, http://www.worldtimezone.com

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(Somewhat) New Firefox add-on
by George Bradt Nov. 11, 2009

Nov. 11, 2009

Hi, I have written a Firefox add-on which uses a timezone data file which I generate from the tz data files. It is called Simple Timer + Clocks, and the homepage is http://simpletimerclocks.mozdev.org/ It has various functions including: # display your local clock # track the local time in locations around the world # receive notifications at specific times of the day (using your local time, or local time in other timezones) # receive notifications on specific dates (ie. calendar function) # count up from zero # count down from any time (less than 24 hours). You can set as many timers as you want # event logging for completed count ups, count downs, notifications and calendar events It existed for a while on mozdev.org, just recently I made it available for download through AMO. Regards, George Bradt

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Updated efele.net/tz maps
by Eric Muller Nov. 11, 2009

Nov. 11, 2009

I have updated the maps of the TZ timezones presented at <http://efele.net/maps/tz>: - in sync with 2009r - antarctica is now handled (that leaves only Greenland that is not dealt with) - better processing to produce the maps, resulting in better quality - addition of terms of use (everything is CC0; i.e. whatever I had a right to is now in the public domain) I am sure there are some glitches; please let me know. Enjoy, Eric.

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FW: TZ Labels for Australia Eastern Zone
by Olson, Arthur David (NIH/NCI) [E] Nov. 10, 2009

Nov. 10, 2009

I'm forwarding this message from RG, who is not on the time zone mailing list. Those of you who are on the list, please direct replies appropriately. (While the AEST/EST controversy is old, the URL in RG's electronic mail is new.) --ado -----Original Message----- From: rameses(a)iinet.net.au [mailto:rameses@iinet.net.au] Sent: Saturday, November 07, 2009 6:39 To: tz(a)lecserver.nci.nih.gov Subject: TZ Labels for Australia Eastern Zone To whom it may concern, I am an end user of timezone data (tzdata) in a Linux distribution (Fedora). As the package ReadMe suggests, questions about the content of tzdata should be directed to this mailing list rather than the distribution's developers. In the Australian eastern zone, two time zones are used: Australian Eastern Standard Time (UTC +10) and Australian Eastern Daylight-savings Time (UTC +11). The abbreviations for these zones are AEST and AEDT, respectively. Australian timezones are explained here: http://www.australia.gov.au/about-australia/our-country/time The tzdata currently available for my Linux distro (which I believe is the latest available) uses the incorrect label "EST" for both AEST and AEDT. The timezone (+10 or +11) itself is correct, but the labels are not. Could you please look into this issue and, if it is indeed your responsibility, correct it at the next convenient opportunity. Kind Regards, RG

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