- tz - lists.iana.org

Re: Possible error with timezone for Saint Pierre/Miquelon?
by Hancock, David (dhancock) March 17, 2008

March 17, 2008

We have fixed this by hand-entering the timezone name as "America/Miquelon." The web server we used to obtain the timezone (given lat/lon coordinates) gave "Etc/GMT-3" and that was the primary source of our confusion. Thanks for enduring my new-to-timezones questions, and Cheers! -- David Hancock | dhancock(a)arinc.com > From: "Hancock, David (DHANCOCK)" <DHANCOCK(a)arinc.com> > Date: Thu, 13 Mar 2008 11:43:10 -0400 > To: <tz(a)elsie.nci.nih.gov>, <tz(a)lecserver.nci.nih.gov>, "Raymond, Bill > (BRAYMOND)" <BRAYMOND(a)arinc.com> > Conversation: Possible error with timezone for Saint Pierre/Miquelon? > Subject: RE: Possible error with timezone for Saint Pierre/Miquelon? > > Chris: Thanks for the note. We are using a Python wrapper around the TZ > database. I will have a look at the chain starting from our side to see where > the "no dst" is being introduced. The library we use gets distributed with a > copy of the Olson DB, but if we see an update that's newer than the pytz > distribution, we obtain the newer distribution and put it where pytz looks for > it. > > I'll let you know what I discover from our end. Apologies for blaming the > database first! We're in the midst of encoding real timezone names for all of > our airports, and this was the first error that wasn't simply having the name > incorrect. > > I should note, though, that worldtimeengine.com (which uses Olson data and a > GIS approach for mapping locations to the timezone name) also shows no DST in > 2008, but administrative region is Canada. The following URL ends with an > underscore: > > http://worldtimeengine.com/doTime/miquelon_st_pierre_and_miquelon_saint_pie… > _miquelon_ > > Thanks, and > Cheers! > -- > David Hancock | dhancock(a)arinc.com > > > -----Original Message----- > From: Chris Walton [mailto:Chris.Walton@telus.com] > Sent: Thursday, March 13, 2008 11:26 AM > To: tz(a)lecserver.nci.nih.gov; Hancock, David (DHANCOCK); Raymond, Bill > (BRAYMOND) > Subject: RE: Possible error with timezone for Saint Pierre/Miquelon? > > I am unable to replicate the "Saint Pierre/Miquelon" problem reported by David > Hancock and Bill Raymond. > > America/Miquelon is configured to follow the "Canada" ruleset. Daylight saving > in Canada started on March 9 this year. > Zone America/Miquelon -3:44:40 - LMT 1911 May 15 # St Pierre > -4:00 - AST 1980 May > -3:00 - PMST 1987 # Pierre & Miquelon Time > -3:00 Canada PM%sT > > # TZ=America/Miquelon date '+%Z %z' > PMDT -0200 > > # zdump -v America/Miquelon | grep 2008 > America/Miquelon Thu Mar 13 15:04:41 2008 UTC = Thu Mar 13 13:04:41 2008 PMDT > isdst=1 > America/Miquelon Sun Mar 9 04:59:59 2008 UTC = Sun Mar 9 01:59:59 2008 PMST > isdst=0 > America/Miquelon Sun Mar 9 05:00:00 2008 UTC = Sun Mar 9 03:00:00 2008 PMDT > isdst=1 > America/Miquelon Sun Nov 2 03:59:59 2008 UTC = Sun Nov 2 01:59:59 2008 PMDT > isdst=1 > America/Miquelon Sun Nov 2 04:00:00 2008 UTC = Sun Nov 2 01:00:00 2008 PMST > isdst=0 > > David and/or Bill, > Are you using standard compiled zone files with a standard C library? > Or are you doing something more complex that might have introduced an error? > > -chris > -----Original Message----- > From: Olson, Arthur David (NIH/NCI) [E] [mailto:olsona@dc37a.nci.nih.gov] > Sent: March 13, 2008 9:19 AM > To: tz(a)lecserver.nci.nih.gov > Subject: FW: Possible error with timezone for Saint Pierre/Miquelon? > > I'm forwarding this message from David Hancock; since sending it, he has asked > to be added to the time zone mailing list and has been added. > > --ado > > From: Hancock, David (dhancock) [mailto:dhancock@arinc.com] > Sent: Thursday, March 13, 2008 8:05 > To: tz(a)lecserver.nci.nih.gov > Cc: Raymond, Bill (BRAYMOND) > Subject: Possible error with timezone for Saint Pierre/Miquelon? > > Please see the note below from one of my colleagues, Bill Raymond. He was > following up on a discrepancy in our airport local-time lookup for one of the > airports our customers use. He verified that the island follows DST by calling > the airport authority there. Neither of us knows the start and end > dates for DST, though. > One of our destination airports is LFVP - Saint Pierre/Miquelon. There is a > timezone America/Miquelon but the current setting is GMT -3 with no DST. LFVP > is currently is DST and is GMT -2. It looks like the Olson data has DST info > for 2007 but not for 2008. I did check several sources to > confirm, including making a call to Air St. Pierre at the airport to check > local time. > > For now I set LFVP to Etc/GMT -2. Please let me know if there will be an > update. > > We recently integrated the timezone DB into our flight-planning site and it's > working out very well. We've also been using worldtimeengine.com, which is > great for obtaining timezone information using latitude and longitude. > > Cheers! > -- > David Hancock | dhancock(a)arinc.com > >

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FW: FW: Sryia
by Olson, Arthur David (NIH/NCI) [E] March 17, 2008

March 17, 2008

I'm forwarding this message from Stephen Colebourne, 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: Stephen Colebourne [mailto:scolebourne@joda.org] Sent: Monday, March 17, 2008 10:26 To: Olson, Arthur David (NIH/NCI) [E] Subject: Re: FW: Sryia > -----Original Message----- > From: Stephen Colebourne [mailto:scolebourne@joda.org] > For everyone's info, I saw an IATA time zone change for Sryia for this > month (March 2008) in the last day or so. I don't have it to hand so > sadly I can't confirm the details right now. This is the data IATA are now using: Country Time Standard --- DST Start --- --- DST End --- DST Name Zone Variation Time Date Time Date Variation Syrian Arab Republic SY +0200 2200 03APR08 2100 30SEP08 +0300 2200 02APR09 2100 30SEP09 +0300 2200 01APR10 2100 30SEP10 +0300 Stephen

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Renaming Saigon to TP Ho Chi Minh
by Martin Pitt March 17, 2008

March 17, 2008

Hello tzdata developers, I already contacted you about this a little while ago, but the discussion didn't get very far. In https://launchpad.net/bugs/121540, Vientamese users make quite a clear statement that "Saigon" is obsolete and, more importantly, politically sensitive. The current name of that city has been "Ho Chi Minh" for very long, so it should be renamed to "TP Ho Chi Minh", and Saigon should get a transitional link. Last time it was already proposed to use the capital "Hanoi" instead or in addition, but I understand that you usually use the largest city, not capitals. I take it that didn't change? Thanks for considering, Martin -- Martin Pitt | http://www.piware.de Ubuntu Developer (www.ubuntu.com) | Debian Developer (www.debian.org)

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Turkey is considering all year DST
by Alexander Krivenyshev March 15, 2008

March 15, 2008

Here is an article that Turkey is considering all year DST. "... We consider that the day-light saving time may be implemented all year round, but we did not make a firm decision on the matter yet ... ....However the clocks will no longer be taken back by one hour after March..." http://www.hurriyet.com.tr/english/turkey/8448625.asp?gid=231&sz=85795 Alexander Krivenyshev, http://www.worldtimezone.com/dst_news/ http://www.worldtimezone.net/dst_news/dst_news_turkey01.html New York, NY

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Proposed changes for Cuba, Iraq, and San Luis, Argentina
by Arthur David Olson March 15, 2008

March 15, 2008

Here are proposed changes to files in the time zone distribution; these are relative to tzdata2008a.tar.gz. Changes are made to: asia: Iraq abandons DST northamerica: Cuba changes start of DST southamerica and zone.tab: San Luis, Argentina goes to UTC-3 year-round Absent feedback, I plan to make tzdata2008b.tar.gz available March 24, 2008 (about a week before the Iraq change affects current time stamps). Note: we still don't have good information about historic practice in San Luis. --ado ------- asia ------- *** /tmp/geta24643 Sat Mar 15 13:53:14 2008 --- /tmp/getb24643 Sat Mar 15 13:53:14 2008 *************** *** 1,4 **** ! # @(#)asia 8.14 # <pre> # This data is by no means authoritative; if you think you know better, --- 1,4 ---- ! # @(#)asia 8.15 # <pre> # This data is by no means authoritative; if you think you know better, *************** *** 660,665 **** --- 660,680 ---- # # So we'll ignore the Economist's claim. + # From Steffen Thorsen (2008-03-10): + # The cabinet in Iraq abolished DST last week, according to the following + # news sources (in Arabic): + # <a href="http://www.aljeeran.net/wesima_articles/news-20080305-98602.html"> + # http://www.aljeeran.net/wesima_articles/news-20080305-98602.html + # </a> + # <a href="http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublic…"> + # http://www.aswataliraq.info/look/article.tpl?id=2047&IdLanguage=17&IdPublic… + # </a> + # + # We have published a short article in English about the change: + # <a href="http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html"> + # http://www.timeanddate.com/news/time/iraq-dumps-daylight-saving.html + # </a> + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Iraq 1982 only - May 1 0:00 1:00 D Rule Iraq 1982 1984 - Oct 1 0:00 0 S *************** *** 670,677 **** # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the `:01' is a typo. # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this. # ! Rule Iraq 1991 max - Apr 1 3:00s 1:00 D ! Rule Iraq 1991 max - Oct 1 3:00s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Baghdad 2:57:40 - LMT 1890 2:57:36 - BMT 1918 # Baghdad Mean Time? --- 685,692 ---- # IATA SSIM (1991/1996) says Apr 1 12:01am UTC; guess the `:01' is a typo. # Shanks & Pottenger say Iraq did not observe DST 1992/1997; ignore this. # ! Rule Iraq 1991 2007 - Apr 1 3:00s 1:00 D ! Rule Iraq 1991 2007 - Oct 1 3:00s 0 S # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Baghdad 2:57:40 - LMT 1890 2:57:36 - BMT 1918 # Baghdad Mean Time? ------- northamerica ------- *** /tmp/geta24662 Sat Mar 15 13:53:15 2008 --- /tmp/getb24662 Sat Mar 15 13:53:15 2008 *************** *** 1,4 **** ! # @(#)northamerica 8.20 # <pre> # also includes Central America and the Caribbean --- 1,4 ---- ! # @(#)northamerica 8.23 # <pre> # also includes Central America and the Caribbean *************** *** 2205,2210 **** --- 2205,2256 ---- # # http://www.worldtimezone.com/dst_news/dst_news_cuba03.html + # From Arthur David Olson (2008-03-09): + # I'm in Maryland which is now observing United States Eastern Daylight + # Time. At 9:44 local time I used RealPlayer to listen to + # <a href="http://media.enet.cu/radioreloj"> + # http://media.enet.cu/radioreloj + # </a>, a Cuban information station, and heard + # the time announced as "ocho cuarenta y cuatro" ("eight forty-four"), + # indicating that Cuba is still on standard time. + + # From Steffen Thorsen (2008-03-12): + # It seems that Cuba will start DST on Sunday, 2007-03-16... + # It was announced yesterday, according to this source (in Spanish): + # <a href="http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm"> + # http://www.nnc.cubaweb.cu/marzo-2008/cien-1-11-3-08.htm + # </a> + # + # Some more background information is posted here: + # <a href="http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html"> + # http://www.timeanddate.com/news/time/cuba-starts-dst-march-16.html + # </a> + # + # The article also says that Cuba has been observing DST since 1963, + # while Shanks (and tzdata) has 1965 as the first date (except in the + # 1940's). Many other web pages in Cuba also claim that it has been + # observed since 1963, but with the exception of 1970 - an exception + # which is not present in tzdata/Shanks. So there is a chance we need to + # change some historic records as well. + # + # One example: + # <a href="http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm"> + # http://www.radiohc.cu/espanol/noticias/mar07/11mar/hor.htm + # </a> + + # From Jesper Norgaard Welen (2008-03-13): + # The Cuban time change has just been confirmed on the most authoritative + # web site, the Granma. Please check out + # <a href="http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html"> + # http://www.granma.cubaweb.cu/2008/03/13/nacional/artic10.html + # </a> + # + # Basically as expected after Steffen Thorsens information, the change + # will take place midnight between Saturday and Sunday. + + # From Arthur David Olson (2008-03-12): + # Assume Sun>=15 (third Sunday) going forward. + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule Cuba 1928 only - Jun 10 0:00 1:00 D Rule Cuba 1928 only - Oct 10 0:00 0 S *************** *** 2236,2242 **** 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 --- 2282,2289 ---- 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 only - Mar Sun>=8 0:00s 1:00 D ! Rule Cuba 2008 max - Mar Sun>=15 0:00s 1:00 D # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone America/Havana -5:29:28 - LMT 1890 ------- southamerica ------- *** /tmp/geta24681 Sat Mar 15 13:53:15 2008 --- /tmp/getb24681 Sat Mar 15 13:53:15 2008 *************** *** 1,4 **** ! # @(#)southamerica 8.18 # <pre> # This data is by no means authoritative; if you think you know better, --- 1,4 ---- ! # @(#)southamerica 8.19 # <pre> # This data is by no means authoritative; if you think you know better, *************** *** 228,233 **** --- 228,303 ---- # http://www.sanjuan.gov.ar/prensa/archivo/000426.html # http://www.sanjuan.gov.ar/prensa/archivo/000441.html + # From Alex Krivenyshev (2008-01-17): + # Here are articles that Argentina Province San Luis is planning to end DST + # as earlier as upcoming Monday January 21, 2008 or February 2008: + # + # Provincia argentina retrasa reloj y marca diferencia con resto del pais + # (Argentine Province delayed clock and mark difference with the rest of the + # country) + # <a href="http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4…"> + # http://cl.invertia.com/noticias/noticia.aspx?idNoticia=200801171849_EFE_ET4… + # </a> + # + # Es inminente que en San Luis atrasen una hora los relojes + # (It is imminent in San Luis clocks one hour delay) + # <a href="http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414"> + # http://www.lagaceta.com.ar/vernotae.asp?id_nota=253414 + # </a> + # + # <a href="http://www.worldtimezone.net/dst_news/dst_news_argentina02.html"> + # http://www.worldtimezone.net/dst_news/dst_news_argentina02.html + # </a> + + # From Jesper Norgaard Welen (2008-01-18): + # The page of the San Luis provincial government + # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812"> + # http://www.sanluis.gov.ar/notas.asp?idCanal=0&id=22812 + # </a> + # confirms what Alex Krivenyshev has earlier sent to the tz + # emailing list about that San Luis plans to return to standard + # time much earlier than the rest of the country. It also + # confirms that upon request the provinces San Juan and Mendoza + # refused to follow San Luis in this change. + # + # The change is supposed to take place Monday the 21.st at 0:00 + # hours. As far as I understand it if this goes ahead, we need + # a new timezone for San Luis (although there are also documented + # independent changes in the southamerica file of San Luis in + # 1990 and 1991 which has not been confirmed). + + # From Jesper Norgaard Welen (2008-01-25): + # Unfortunately the below page has become defunct, about the San Luis + # time change. Perhaps because it now is part of a group of pages "Most + # important pages of 2008." + # + # You can use + # <a href="http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834"> + # http://www.sanluis.gov.ar/notas.asp?idCanal=8141&id=22834 + # </a> + # instead it seems. Or use "Buscador" from the main page of the San Luis + # government, and fill in "huso" and click OK, and you will get 3 pages + # from which the first one is identical to the above. + + # From Mariano Absatz (2008-01-28): + # I can confirm that the Province of San Luis (and so far only that + # province) decided to go back to UTC-3 effective midnight Jan 20th 2008 + # (that is, Monday 21st at 0:00 is the time the clocks were delayed back + # 1 hour), and they intend to keep UTC-3 as their timezone all year round + # (that is, unless they change their mind any minute now). + # + # So we'll have to add yet another city to 'southamerica' (I think San + # Luis city is the mos populated city in the Province, so it'd be + # America/Argentina/San_Luis... of course I can't remember if San Luis's + # history of particular changes goes along with Mendoza or San Juan :-( + # (I only remember not being able to collect hard facts about San Luis + # back in 2004, when these provinces changed to UTC-4 for a few days, I + # mailed them personally and never got an answer). + + # From Arthur David Olson (2008-03-15): + # Until there's better information, asssume San Luis was like San Juan + # rather than Mendoza (since San Juan has a simpler DST history). + # Unless otherwise specified, data are from Shanks & Pottenger through 1992, # from the IATA otherwise. As noted below, Shanks & Pottenger say that # America/Cordoba split into 6 subregions during 1991/1992, but we *************** *** 350,355 **** --- 420,439 ---- -4:00 - WART 2004 Sep 26 -3:00 Arg AR%sT # + # San Luis (SL) + Zone America/Argentina/San_Luis -4:25:24 - LMT 1894 Oct 31 + -4:16:48 - CMT 1920 May + -4:00 - ART 1930 Dec + -4:00 Arg AR%sT 1969 Oct 5 + -3:00 Arg AR%sT 1991 Mar 1 + -4:00 - WART 1991 May 7 + -3:00 Arg AR%sT 1999 Oct 3 + -4:00 Arg AR%sT 2000 Mar 3 + -3:00 - ART 2004 May 31 + -4:00 - WART 2004 Jul 25 + -3:00 Arg AR%sT 2008 Jan 21 + -3:00 - ART + # # Santa Cruz (SC) Zone America/Argentina/Rio_Gallegos -4:36:52 - LMT 1894 Oct 31 -4:16:48 - CMT 1920 May # Cordoba Mean Time ------- zone.tab ------- *** /tmp/geta24700 Sat Mar 15 13:53:15 2008 --- /tmp/getb24700 Sat Mar 15 13:53:15 2008 *************** *** 1,4 **** ! # @(#)zone.tab 8.13 # # TZ zone descriptions # --- 1,4 ---- ! # @(#)zone.tab 8.14 # # TZ zone descriptions # *************** *** 42,48 **** AQ -6640+14001 Antarctica/DumontDUrville Dumont-d'Urville Station, Terre Adelie AQ -690022+0393524 Antarctica/Syowa Syowa Station, E Ongul I AR -3436-05827 America/Argentina/Buenos_Aires Buenos Aires (BA, CF) ! AR -3124-06411 America/Argentina/Cordoba most locations (CB, CC, CN, ER, FM, LP, MN, NQ, RN, SA, SE, SF, SL) AR -2411-06518 America/Argentina/Jujuy Jujuy (JY) AR -2649-06513 America/Argentina/Tucuman Tucuman (TM) AR -2828-06547 America/Argentina/Catamarca Catamarca (CT), Chubut (CH) --- 42,49 ---- AQ -6640+14001 Antarctica/DumontDUrville Dumont-d'Urville Station, Terre Adelie AQ -690022+0393524 Antarctica/Syowa Syowa Station, E Ongul I AR -3436-05827 America/Argentina/Buenos_Aires Buenos Aires (BA, CF) ! AR -3124-06411 America/Argentina/Cordoba most locations (CB, CC, CN, ER, FM, LP, MN, NQ, RN, SA, SE, SF) ! AR -3319-06621 America/Argentina/San_Luis San Luis (SL) AR -2411-06518 America/Argentina/Jujuy Jujuy (JY) AR -2649-06513 America/Argentina/Tucuman Tucuman (TM) AR -2828-06547 America/Argentina/Catamarca Catamarca (CT), Chubut (CH)

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FW: Sryia
by Olson, Arthur David (NIH/NCI) [E] March 15, 2008

March 15, 2008

I'm forwarding this message from Stephen Colebourne, who is not on the time zone mailing list (at least not at the address below). Those of you who are on the list, please direct replies appropriately. --ado -----Original Message----- From: Stephen Colebourne [mailto:scolebourne@joda.org] Sent: Saturday, March 15, 2008 12:45 PM To: tz(a)lecserver.nci.nih.gov Subject: Sryia For everyone's info, I saw an IATA time zone change for Sryia for this month (March 2008) in the last day or so. I don't have it to hand so sadly I can't confirm the details right now. Stephen

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Sryia
by Stephen Colebourne March 15, 2008

March 15, 2008

For everyone's info, I saw an IATA time zone change for Sryia for this month (March 2008) in the last day or so. I don't have it to hand so sadly I can't confirm the details right now. Stephen

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Guatemala goes back on instituting DST
by Olson, Arthur David (NIH/NCI) [E] March 15, 2008

March 15, 2008

At... http://www.worldtimezone.com/dst_news/dst_news_guatemala05.html ...there's a copy of a Univision report on Guatemalan DST; the report begins... Guatemala, 11 mar (EFE).- El Gobierno de Guatemala dio hoy marcha atrás en su intención de adelantar la hora oficial para ahorrar energía, como lo anunció en enero pasado, debido a la ola de violencia que afecta a este país. ...meaning (paraphrasing) that on the eleventh they went back on the intention to advance the official hour, as had been announced in January. --ado

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Cuban Time Zone
by Jota Jota March 13, 2008

March 13, 2008

Hi: I just want to say that Cuba ("America/Havana" time zone) is EST (Eastern Standard Time -0500) and not CST (Central Standard Time -0600) during the Standard Time. In DST Cuba is EDT (Eastern Daylight Time -0400) and not CDT (Central Daylight Time -0500) Best regards Jota ____________________________________________________________________________________ Looking for last minute shopping deals? Find them fast with Yahoo! Search. http://tools.search.yahoo.com/newsearch/category.php?category=shopping

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FW: [Paraguay]
by Olson, Arthur David (NIH/NCI) [E] March 13, 2008

March 13, 2008

I'm forwarding this message from Sergio Britos, who is not on the time zone mailing list (and who has a ".py" electronic mail address). Those of you who are on the time zone mailing list, please direct replies appropriately. (The "southamerica" file shows Asuncion as having done its southern-hemisphere-winter fall-back on March 9.) --ado From: Sergio Britos (Capital Markets) [mailto:sbritos@capitalmarkets.com.py] Sent: Thursday, March 13, 2008 10:39 To: tz(a)lecserver.nci.nih.gov Subject: There have been a recent advancing of 1 hour in clock so that in Asuncion Paraguay, right now is 10:00a.m. not 9:00 am. So please update your database

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