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HST vs. HAST
by Bill Seymour Nov. 2, 2007

Nov. 2, 2007

A newbie question that could have an answer similar to the recent question about Australian time zones... I note that Pacific/Honolulu and Pacific/Johnston say HST rather than HAST; but America/Adak says HA%sT. Is there a reason for leaving out the 'A' for Hawaii and Johnston Atoll? Thanks, --Bill Seymour

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Australian time zone names
by Mark Jerkovic Nov. 1, 2007

Nov. 1, 2007

Hi, I would like to propose an amendment to the format of Australian timezones. Currently the format is EST for eastern states and WST for western states. This is incorrect. The Australian Government defines time zone names as follows: Time Zones There are three times zones in Australia - Eastern Australian Eastern Standard Time (AEST) is equal to Greenwich Mean Time plus 10 hours (GMT +10). AEST is followed in these regions: * New South Wales (except Broken Hill) * Victoria * Queensland * Tasmania * Australian Capital Territory Central Australian Central Standard Time (ACST) is equal to Greenwich Mean Time plus 9 ½ hours (GMT +9 ½). ACST is followed in these regions: * South Australia * Northern Territory * Broken Hill, NSW Western Australian Western Standard Time (AWST) is equal to Greenwich Mean Time plus 8 hours (GMT +8). AWST is followed in these regions: * Western Australia Daylight Saving Daylight saving time is observed by New South Wales, Victoria, South Australia, Tasmania, and the Australian Capital Territory from early to late October to the end of March. Western Australia began a three year trial of daylight saving on 3 December 2006. Queensland and the Northern Territory do not observe daylight savings. Where daylight saving is being observed: * AEST becomes Australian Eastern Daylight Time (AEDT), and clocks are advanced to GMT +11. * ACST becomes Australian Central Daylight Time (ACDT), and clocks are advanced to GMT +10 ½. * AWST becomes Australian Western Daylight Time (AWDT), and clocks are advanced to GMT +9. The link where this came from is http://www.australia.gov.au/Time_Zones Could these naming conventions be added to the timezone database? Thanks, Mark. Mark Jerkovic Senior Software Engineer Aconex The easy way to save time and money on your project Level 1, 696 Bourke Street, Melbourne VIC 3000, Australia Tel: +61 3 9240 0200 Fax: +61 3 9240 0299 Email: mjerkovic(a)aconex.com www.aconex.com This email and any attachments are intended solely for the addressee. The contents may be privileged, confidential and/or subject to copyright or other applicable law. No confidentiality or privilege is lost by an erroneous transmission. If you have received this e-mail in error, please let us know by reply e-mail and delete or destroy this mail and all copies. If you are not the intended recipient of this message you must not disseminate, copy or take any action in reliance on it. The sender takes no responsibility for the effect of this message upon the recipient's computer system.

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FW: London (GMT) notation self-conflicts
by Olson, Arthur David (NIH/NCI) [E] Nov. 1, 2007

Nov. 1, 2007

I'm forwarding this message from Paul Bruin, who is not on the time zone mailing list. Those of you who are on the time zone mailing list should direct replies appropriately. --ado From: BRUIN Paul [mailto:pbruin@miranda.com] Sent: Wednesday, October 31, 2007 11:58 To: tz(a)lecserver.nci.nih.gov Subject: London (GMT) notation self-conflicts Hello, My company's application servers use the Olson database as a time zone reference. The following listings appear, which I believe are so-named in the Olson database: London (Greenwich Mean Time) Belfast (Greenwich Mean Time) Dublin (Greenwich Mean Time) These notations are correct only in winter, when all three cities are on GMT. But in Summer, these cities are GMT+1. This means that in summer, there is a conflict within the notation. Note that this conflict does not arise for cities outside the United Kingdom. Taking Paris (Central European Time) as an example, Paris time and Central European Time are always the same, irrespective of the extra hour of Daylight Savings offset from GMT in summer. To fix this, "Greenwich Mean Time" should be removed from the notation for London, Belfast and Dublin. It might be replaced by "United Kingdom Time," "British Isles Time" or "British Time." Does this conflicting notation indeed exist in the Olson database and, if so, can it be fixed? Thanks for your help, Paul Bruin pbruin(a)miranda.com 415-924-8702 (office) 415-706-0442 (cell) 17 Skylark Drive, #39 Larkspur, CA 94939 U.S.A.

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tzdata2007i.tar.gz
by Olson, Arthur David (NIH/NCI) [E] Nov. 1, 2007

Nov. 1, 2007

The file... ftp://elsie.nci.nih.gov/pub/tzdata2007i.tar.gz ...is now available; this reflects changes for Cuba and Syria circulated earlier this week on the time zone mailing list. There are no code changes, so there's no tzcode2007i; tzcood2007h remains current. --ado

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Announcement list for zoneinfo changes
by Edwin Groothuis Oct. 31, 2007

Oct. 31, 2007

Hello TZ maintainers, As the maintainer of the FreeBSD zoneinfo files (both in the ports collection and in the base system) I would like to know if there is an announcement mailinglist for when a new version of the zoneinfo has been made available on the nih.gov FTP site. Edwin PS. Thanks for the great work! -- Edwin Groothuis edwin(a)freebsd.org http://www.mavetju.org

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London (GMT) notation self-conflicts
by BRUIN Paul Oct. 31, 2007

Oct. 31, 2007

Hello, My company's application servers use the Olson database as a time zone reference. The following listings appear, which I believe are so-named in the Olson database: London (Greenwich Mean Time) Belfast (Greenwich Mean Time) Dublin (Greenwich Mean Time) These notations are correct only in winter, when all three cities are on GMT. But in Summer, these cities are GMT+1. This means that in summer, there is a conflict within the notation. Note that this conflict does not arise for cities outside the United Kingdom. Taking Paris (Central European Time) as an example, Paris time and Central European Time are always the same, irrespective of the extra hour of Daylight Savings offset from GMT in summer. To fix this, "Greenwich Mean Time" should be removed from the notation for London, Belfast and Dublin. It might be replaced by "United Kingdom Time," "British Isles Time" or "British Time." Does this conflicting notation indeed exist in the Olson database and, if so, can it be fixed? Thanks for your help, Paul Bruin pbruin(a)miranda.com 415-924-8702 (office) 415-706-0442 (cell) 17 Skylark Drive, #39 Larkspur, CA 94939 U.S.A.

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Proposed changes (unwrapped this time, I hope)
by Arthur David Olson Oct. 30, 2007

Oct. 30, 2007

Let's see if I can avoid the ugly line wrapping by avoiding use of an XP system. --ado ------- asia ------- *** /tmp/geta10840 Tue Oct 30 10:28:23 2007 --- /tmp/getb10840 Tue Oct 30 10:28:23 2007 *************** *** 1771,1777 **** # For lack of better info, assume the rule changed to "last Friday in March" # this year. Rule Syria 2007 max - Mar lastFri 0:00 1:00 S ! Rule Syria 2007 max - Oct 1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq 2:00 Syria EE%sT --- 1771,1801 ---- # For lack of better info, assume the rule changed to "last Friday in March" # this year. Rule Syria 2007 max - Mar lastFri 0:00 1:00 S ! # From Jesper Norgard (2007-10-27): ! # The sister center ICARDA of my work CIMMYT is confirming that Syria DST will ! # not take place 1.st November at 0:00 o'clock but 1.st November at 24:00 or ! # rather Midnight between Thursday and Friday. This does make more sence than ! # having it between Wednesday and Thursday (two workdays in Syria) since the ! # weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now ! # it is implemented at midnight of the last workday before weekend... ! # ! # From Steffen Thorsen (2007-10-27): ! # Jesper Norgaard Welen wrote: ! # ! # > "Winter local time in Syria will be observed at midnight of Thursday 1 ! # > November 2007, and the clock will be put back 1 hour." ! # ! # I found confirmation on this in this gov.sy-article (Arabic): ! # http://wehda.alwehda.gov.sy/_print_veiw.asp?FileName=12521710520070926111247 ! # ! # which using Google's translate tools says: ! # Council of Ministers also approved the commencement of work on ! # identifying the winter time as of Friday, 2/11/2007 where the 60th ! # minute delay at midnight Thursday 1/11/2007. ! # ! # From Arthur David Olson (2007-10-30): ! # My best guess for the future is first Friday in November. ! Rule Syria 2007 max - Nov Fri>=1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq 2:00 Syria EE%sT ------- northamerica ------- *** /tmp/geta10859 Tue Oct 30 10:28:34 2007 --- /tmp/getb10859 Tue Oct 30 10:28:35 2007 *************** *** 2187,2192 **** --- 2187,2209 ---- # says Cuban clocks will advance at midnight on March 10. # For lack of better information, assume Cuba will use US rules, # except that it switches at midnight standard time as usual. + # + # From Steffen Thorsen (2007-10-25): + # Carlos Alberto Fonseca Arauz informed me that Cuba will end DST one week + # earlier - on the last Sunday of October, just like in 2006. + # + # He supplied these references: + # + # http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07-86… + # http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_cam… + # + # From Alex Kryvenishev (2007-10-25): + # Here is also article from Granma (Cuba): + # + # [Regira] el Horario Normal desde el [proximo] domingo 28 de octubre + # http://www.granma.cubaweb.cu/2007/10/24/nacional/artic07.html + # + # http://www.worldtimezone.com/dst_news/dst_news_cuba03.html # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Cuba 1928 only - Jun 10 0:00 1:00 D *************** *** 2218,2226 **** Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S Rule Cuba 2000 2006 - Apr Sun>=1 0:00s 1:00 D ! Rule Cuba 2006 only - Oct lastSun 0:00s 0 S Rule Cuba 2007 max - Mar Sun>=8 0:00s 1:00 D - Rule Cuba 2007 max - Nov Sun>=1 0:00s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 --- 2235,2242 ---- Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S Rule Cuba 2000 2006 - Apr Sun>=1 0:00s 1:00 D ! Rule Cuba 2006 max - Oct lastSun 0:00s 0 S Rule Cuba 2007 max - Mar Sun>=8 0:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890

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Proposed changes for Cuba and Syria
by Olson, Arthur David (NIH/NCI) [E] Oct. 30, 2007

Oct. 30, 2007

Here are proposed changes to handle current times in Cuba and Syria correctly. --ado ------- asia ------- *** /tmp/geta10840 Tue Oct 30 10:28:23 2007 --- /tmp/getb10840 Tue Oct 30 10:28:23 2007 *************** *** 1771,1777 **** # For lack of better info, assume the rule changed to "last Friday in March" # this year. Rule Syria 2007 max - Mar lastFri 0:00 1:00 S ! Rule Syria 2007 max - Oct 1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq 2:00 Syria EE%sT --- 1771,1801 ---- # For lack of better info, assume the rule changed to "last Friday in March" # this year. Rule Syria 2007 max - Mar lastFri 0:00 1:00 S ! # From Jesper Norgard (2007-10-27): ! # The sister center ICARDA of my work CIMMYT is confirming that Syria DST will ! # not take place 1.st November at 0:00 o'clock but 1.st November at 24:00 or ! # rather Midnight between Thursday and Friday. This does make more sence than ! # having it between Wednesday and Thursday (two workdays in Syria) since the ! # weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now ! # it is implemented at midnight of the last workday before weekend... ! # ! # From Steffen Thorsen (2007-10-27): ! # Jesper Norgaard Welen wrote: ! # ! # > "Winter local time in Syria will be observed at midnight of Thursday 1 ! # > November 2007, and the clock will be put back 1 hour." ! # ! # I found confirmation on this in this gov.sy-article (Arabic): ! # http://wehda.alwehda.gov.sy/_print_veiw.asp?FileName=1252171052007092611 1247 ! # ! # which using Google's translate tools says: ! # Council of Ministers also approved the commencement of work on ! # identifying the winter time as of Friday, 2/11/2007 where the 60th ! # minute delay at midnight Thursday 1/11/2007. ! # ! # From Arthur David Olson (2007-10-30): ! # My best guess for the future is first Friday in November. ! Rule Syria 2007 max - Nov Fri>=1 0:00 0 - # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Damascus 2:25:12 - LMT 1920 # Dimashq 2:00 Syria EE%sT ------- northamerica ------- *** /tmp/geta10859 Tue Oct 30 10:28:34 2007 --- /tmp/getb10859 Tue Oct 30 10:28:35 2007 *************** *** 2187,2192 **** --- 2187,2209 ---- # says Cuban clocks will advance at midnight on March 10. # For lack of better information, assume Cuba will use US rules, # except that it switches at midnight standard time as usual. + # + # From Steffen Thorsen (2007-10-25): + # Carlos Alberto Fonseca Arauz informed me that Cuba will end DST one week + # earlier - on the last Sunday of October, just like in 2006. + # + # He supplied these references: + # + # http://www.prensalatina.com.mx/article.asp?ID=%7B4CC32C1B-A9F7-42FB-8A07 -8631AFC923AF%7D&language=ES + # http://actualidad.terra.es/sociedad/articulo/cuba_llama_ahorrar_energia_ cambio_1957044.htm + # + # From Alex Kryvenishev (2007-10-25): + # Here is also article from Granma (Cuba): + # + # [Regira] el Horario Normal desde el [proximo] domingo 28 de octubre + # http://www.granma.cubaweb.cu/2007/10/24/nacional/artic07.html + # + # http://www.worldtimezone.com/dst_news/dst_news_cuba03.html # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Cuba 1928 only - Jun 10 0:00 1:00 D *************** *** 2218,2226 **** Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S Rule Cuba 2000 2006 - Apr Sun>=1 0:00s 1:00 D ! Rule Cuba 2006 only - Oct lastSun 0:00s 0 S Rule Cuba 2007 max - Mar Sun>=8 0:00s 1:00 D - Rule Cuba 2007 max - Nov Sun>=1 0:00s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 --- 2235,2242 ---- Rule Cuba 1998 1999 - Mar lastSun 0:00s 1:00 D Rule Cuba 1998 2003 - Oct lastSun 0:00s 0 S Rule Cuba 2000 2006 - Apr Sun>=1 0:00s 1:00 D ! Rule Cuba 2006 max - Oct lastSun 0:00s 0 S Rule Cuba 2007 max - Mar Sun>=8 0:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890

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Saint Barthélemy
by Jesper Norgaard Welen Oct. 27, 2007

Oct. 27, 2007

I think we should include Saint Barthelemy in the tz database, probably in the northamerica file. Currently I don see any mention of it, so the minimum would be to include the island in an appropriate parenthesis for one of the current timezones. The island has a population of 6,852 in the 1999 consensus. The other reason it should be included is that it has its own country code BL, so it should be in the iso3166.tab file. However wikipedia http://en.wikipedia.org/wiki/Saint_Barthelemy and the CIA factbook https://www.cia.gov/library/publications/the-world-factbook/geos/tb.html claim that it uses DST, the first as usual without any detail, while the latter gives the dates starting 20. March and 17. October (for 2007 only?). I have tried to find information on the French-only homepage of the island, but my French skills are definitely not up to the task - perhaps there is no mention of DST in these pages anyhow. The page http://www.st-barths.com/guidepgs/practical.html#10 claims that there is no DST in use in Saint Barthélemy. As usual I welcome any other information that anyone might have to shed light on the possible application of DST on Saint Barthélemy. Regards, - Jesper Jesper Nørgaard Welen Email: jnorgard(a)Prodigy.Net.mx Project Leader (Líder de Proyecto) Software CIMMYT - Centro Internacional de Mejoramiento de Maíz y Trigo Dirección: CIMMYT Int. c/o Jesper Nørgaard Km. 45, Carretera México-Veracruz El Batán Texcoco, Edo. de México CP 56130 MEXICO Tel.: +52 (55) 58-04-20-04 ext. 1374 Fax: +52 (55) 58-04-75-58 Tel. Casa: 53-10-05-95 ó 53-10-97-78 Download the shareware program World Time Explorer, I made: http://www.worldtimeexplorer.com/index.html

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FW: Syria DST
by Jesper Norgaard Welen Oct. 27, 2007

Oct. 27, 2007

The sister center ICARDA of my work CIMMYT is confirming that Syria DST will not take place 1.st November at 0:00 o'clock but 1.st November at 24:00 or rather Midnight between Thursday and Friday. This does make more sence than having it between Wednesday and Thursday (two workdays in Syria) since the weekend in Syria is not Saturday and Sunday, but Friday and Saturday. So now it is implemented at midnight of the last workday before weekend. I know this is semi-official information, but that is the best I can do. I hope you will be able to receive the graphics "Winter Time.jpg" if not here is the essential part of the text (it's a scanned letter with ICARDA letterhead): "Winter local time in Syria will be observed at midnight of Thursday 1 November 2007, and the clock will be put back 1 hour." Regards, - Jesper Nørgaard Welen

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