June 2009 - tz - lists.iana.org

tzdata2009i - Bangladesh
by Jesper Nørgaard June 15, 2009

June 15, 2009

Bangladesh is applying DST this 20.th.of June. In file tzdata2009i this is the attempt to implement it: Rule Bang 2009 only - Jan 1 0:00 0 - Rule Bang 2009 only - Jun 20 0:00 1:00 S Now that doesn't make sense to me at all. Bangladesh has not had anything close to "DST" since 1951, and then we zero-set DST January 1st. 2009? Then after implementation of DST next Saturday we leave it dangling for the next millenium? Probably this is really just a "typo" for Rule Bang 2010 only - Jan 1 0:00 0 - Rule Bang 2009 only - Jun 20 0:00 1:00 S So Bangladesh leaves DST with year end of 2009, since we have no authoritative information. But this is not a very good guess in my opinion, in fact Steffen Thorsen mentions semi-authoritative information: "On another note, Bangladesh's minister for power said earlier in 2009 that the new timing might continue until the end of September. Timeanddate.com will provide an update on the DST end date when it becomes available." Any guess in the end of September seems better to me, or October 1.st. 2009 at 0:00? ... perhaps this was why Dave Rolsky's test cases were blowing up? :) - Jesper Nørgaard Welen

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2009i - Bangladesh suddenly switches to UTC
by Martin Pitt June 15, 2009

June 15, 2009

Hello, with 2009i, which was supposed to fix DST in Bangladesh, I get a very strange result: | $ zdump -v Asia/Dhaka | Asia/Dhaka -9223372036854775808 = NULL | Asia/Dhaka -9223372036854689408 = NULL | Asia/Dhaka Tue Dec 31 17:58:19 1889 UTC = Tue Dec 31 23:59:59 1889 LMT isdst=0 gmtoff=21700 | Asia/Dhaka Tue Dec 31 17:58:20 1889 UTC = Tue Dec 31 23:51:40 1889 HMT isdst=0 gmtoff=21200 | Asia/Dhaka Tue Sep 30 18:06:39 1941 UTC = Tue Sep 30 23:59:59 1941 HMT isdst=0 gmtoff=21200 | Asia/Dhaka Tue Sep 30 18:06:40 1941 UTC = Wed Oct 1 00:36:40 1941 BURT isdst=0 gmtoff=23400 | Asia/Dhaka Thu May 14 17:29:59 1942 UTC = Thu May 14 23:59:59 1942 BURT isdst=0 gmtoff=23400 | Asia/Dhaka Thu May 14 17:30:00 1942 UTC = Thu May 14 23:00:00 1942 IST isdst=0 gmtoff=19800 | Asia/Dhaka Mon Aug 31 18:29:59 1942 UTC = Mon Aug 31 23:59:59 1942 IST isdst=0 gmtoff=19800 | Asia/Dhaka Mon Aug 31 18:30:00 1942 UTC = Tue Sep 1 01:00:00 1942 BURT isdst=0 gmtoff=23400 | Asia/Dhaka Sat Sep 29 17:29:59 1951 UTC = Sat Sep 29 23:59:59 1951 BURT isdst=0 gmtoff=23400 | Asia/Dhaka Sat Sep 29 17:30:00 1951 UTC = Sat Sep 29 23:30:00 1951 DACT isdst=0 gmtoff=21600 | Asia/Dhaka Thu Mar 25 17:59:59 1971 UTC = Thu Mar 25 23:59:59 1971 DACT isdst=0 gmtoff=21600 | Asia/Dhaka Thu Mar 25 18:00:00 1971 UTC = Fri Mar 26 00:00:00 1971 BDT isdst=0 gmtoff=21600 | Asia/Dhaka Fri Jun 19 17:59:59 2009 UTC = Fri Jun 19 23:59:59 2009 BDT isdst=0 gmtoff=21600 | Asia/Dhaka Fri Jun 19 18:00:00 2009 UTC = Fri Jun 19 18:00:00 2009 UTC isdst=0 gmtoff=0 | Asia/Dhaka 9223372036854689407 = NULL | Asia/Dhaka 9223372036854775807 = NULL Note the third last line: It suddenly switches to UTC/gmtoff=0. This doesn't look right? Thank you for any enlightening, Martin -- Martin Pitt | http://www.piware.de Ubuntu Developer (www.ubuntu.com) | Debian Developer (www.debian.org)

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FW: Typos, duplicates, old/new names
by Olson, Arthur David (NIH/NCI) [E] June 12, 2009

June 12, 2009

I'm forwarding this message from Naoko McCracken, 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: Naoko McCracken [mailto:info@nao-net.com] Sent: Thursday, June 11, 2009 2:01 To: tz(a)lecserver.nci.nih.gov Subject: Typos, duplicates, old/new names Hi, I was directed to your project when I reported issues with WordPress language file. They use your timezone database via the php function timezone_identifiers_list() to fetch country names for: http://svn.automattic.com/wordpress-i18n/pot/trunk/wordpress-continents- cities.pot My post: http://comox.textdrive.com/pipermail/wp-polyglots/2009-May/003435.html Reply: http://comox.textdrive.com/pipermail/wp-polyglots/2009-May/003439.html There are a couple more things reported by another language file maintainer: http://comox.textdrive.com/pipermail/wp-polyglots/2009-May/003443.html I'm totally new here and not sure if I'm sending this to the right place. I'd appreciate it if someone can help me through to get these issues straightened. Thank you, --- Naoko McCracken http://ja.wordpress.org/

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Typos, duplicates, old/new names
by Naoko McCracken June 11, 2009

June 11, 2009

Hi, I was directed to your project when I reported issues with WordPress language file. They use your timezone database via the php function timezone_identifiers_list() to fetch country names for: http://svn.automattic.com/wordpress-i18n/pot/trunk/wordpress-continents-cit… My post: http://comox.textdrive.com/pipermail/wp-polyglots/2009-May/003435.html Reply: http://comox.textdrive.com/pipermail/wp-polyglots/2009-May/003439.html There are a couple more things reported by another language file maintainer: http://comox.textdrive.com/pipermail/wp-polyglots/2009-May/003443.html I'm totally new here and not sure if I'm sending this to the right place. I'd appreciate it if someone can help me through to get these issues straightened. Thank you, --- Naoko McCracken http://ja.wordpress.org/

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tz file format
by russ June 9, 2009

June 9, 2009

Hi, I hope i'm not wasting your time. I'm attempting to read the tz database into a c# application, and I'm not sure how to interpret this entry: Zone Australia/Hobart 9:49:16 - LMT 1895 Sep 10:00 - EST 1916 Oct 1 2:00 10:00 1:00 EST 1917 Feb 10:00 Aus EST 1967 10:00 AT EST What is the significance of the "1:00" on the row ending in "1917 Feb". Do I just add this to the 10:00 offset? Thanks, Russell

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Understanding the Bangladesh change
by Dave Rolsky June 8, 2009

June 8, 2009

So I went to update my Perl package based on the Olson database this morning, and my tests are blowing up. The problem is that I don't have any code to handle the current Bangladesh situation. If I'm reading the database correctly, it says that there is a change scheduled for 2009, but then there's nothing scheduled for future years. Does that mean that 2010+ are considered unknown and uncalculatable? That seems somewhat problematic. I can't be the only one who expects to be able to use the Olson database to calculate future dates. -dave /*============================================================ http://VegGuide.org http://blog.urth.org Your guide to all that's veg House Absolute(ly Pointless) ============================================================*/

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tzcode2009i.tar.gz and tzdata2009i.tar.gz
by Olson, Arthur David (NIH/NCI) [E] June 8, 2009

June 8, 2009

The files... ftp://elsie.nci.nih.gov/pub/tzcode2009i.tar.gz ...and... ftp://elsie.nci.nih.gov/pub/tzdata2009i.tar.gz ...are now available; these reflect the changes circulated last week on the time zone mailing list (most importantly, updating for DST in Bangladesh this year). --ado

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Re: proposed time zone package change for Bangladesh
by Arthur David Olson June 6, 2009

June 6, 2009

Here's an updated proposed change, reflecting the information from Steffen Thorsen. The "asia" differences are against the current ftpable version. We'll need to revisit Bangladesh once the 2009 end date is determined. I've also added Eric Muller's tz-link.htm update. Barring problems, these will show up in the ftpable version on 2009-06-08. --ado ------- tz-link.htm ------- *** /tmp/geta9713 Tue Jun 2 09:31:42 2009 --- /tmp/getb9713 Tue Jun 2 09:31:42 2009 *************** *** 18,24 **** <body> <h1>Sources for Time Zone and Daylight Saving Time Data</h1> <address> ! @(#)tz-link.htm 8.19 </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 8.20 </address> <p> This file is in the public domain, so clarified as of *************** *** 360,367 **** </ul> <h2>Time zone boundaries</h2> <ul> ! <li><a href="http://efele.net/maps/tz/us/">A map of the TZ timezones in ! the US</a> contains a <a href="http://en.wikipedia.org/wiki/Shapefile">shapefile</a> of the <code>tz</code> regions in the US.</li> <li><a href="http://statoids.com/statoids.html">Administrative Divisions --- 360,366 ---- </ul> <h2>Time zone boundaries</h2> <ul> ! <li><a href="http://efele.net/maps/tz/">TZ timezone maps</a> contains a <a href="http://en.wikipedia.org/wiki/Shapefile">shapefile</a> of the <code>tz</code> regions in the US.</li> <li><a href="http://statoids.com/statoids.html">Administrative Divisions ------- asia ------- *** /tmp/geta9946 Tue Jun 2 09:41:11 2009 --- /tmp/getb9946 Tue Jun 2 09:41:11 2009 *************** *** 1,5 **** # <pre> ! # @(#)asia 8.32 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. --- 1,5 ---- # <pre> ! # @(#)asia 8.34 # This file is in the public domain, so clarified as of # 2009-05-17 by Arthur David Olson. *************** *** 127,132 **** --- 127,174 ---- 3:00 - AST # Bangladesh + # From Alexander Krivenyshev (2009-05-13): + # According to newspaper Asian Tribune (May 6, 2009) Bangladesh may introduce + # Daylight Saving Time from June 16 to Sept 30 + # + # Bangladesh to introduce daylight saving time likely from June 16 + # <a href="http://www.asiantribune.com/?q=node/17288"> + # http://www.asiantribune.com/?q=node/17288 + # </a> + # or + # <a href="http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html"> + # http://www.worldtimezone.com/dst_news/dst_news_bangladesh02.html + # </a> + # + # "... Bangladesh government has decided to switch daylight saving time from + # June + # 16 till September 30 in a bid to ensure maximum use of daylight to cope with + # crippling power crisis. " + # + # The switch will remain in effect from June 16 to Sept 30 (2009) but if + # implemented the next year, it will come in force from April 1, 2010 + + # From Steffen Thorsen (2009-06-02): + # They have finally decided now, but changed the start date to midnight between + # the 19th and 20th, and they have not set the end date yet. + # + # Some sources: + # <a href="http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601"> + # http://in.reuters.com/article/southAsiaNews/idINIndia-40017620090601 + # </a> + # <a href="http://bdnews24.com/details.php?id=85889&cid=2"> + # http://bdnews24.com/details.php?id=85889&cid=2 + # </a> + # + # Our wrap-up: + # <a href="http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html"> + # http://www.timeanddate.com/news/time/bangladesh-daylight-saving-2009.html + # </a> + + # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S + Rule Bang 2009 only - Jan 1 0:00 0 - + Rule Bang 2009 only - Jun 20 0:00 1:00 S + # Zone NAME GMTOFF RULES FORMAT [UNTIL] Zone Asia/Dhaka 6:01:40 - LMT 1890 5:53:20 - HMT 1941 Oct # Howrah Mean Time? *************** *** 134,140 **** 5:30 - IST 1942 Sep 6:30 - BURT 1951 Sep 30 6:00 - DACT 1971 Mar 26 # Dacca Time ! 6:00 - BDT # Bangladesh Time # Bhutan # Zone NAME GMTOFF RULES FORMAT [UNTIL] --- 176,183 ---- 5:30 - IST 1942 Sep 6:30 - BURT 1951 Sep 30 6:00 - DACT 1971 Mar 26 # Dacca Time ! 6:00 - BDT 2009 # Bangladesh Time ! 6:00 Bang BD%sT # Bhutan # Zone NAME GMTOFF RULES FORMAT [UNTIL]

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tzdata mirror no longer found (in tz-link.htm)
by Nathan Stratton Treadway June 5, 2009

June 5, 2009

I noticed that tz-link.htm file currently (as of the version in tzcode2009h.tar.gz) includes a link labeled "smaller HTTP mirror" to http://public.planetmirror.com/pub/timezone However, when I follow that link, the resulting page does not actually contain any timezone-related files -- and in fact after looking around a bit I didn't see any indication that the site still contains a separate mirror for the "upstream" timezone database. (Using the provided search box to search for the word "tzdata" returned only links related to the CentOS mirror that is hosted on the site.) On a separate-but-related topic: I'm not sure how the http://www.twinsun.com/tz/tz-link.htm web page is normally maintained, but I noticed that while the tzcode2009h file's version of the file contains a version stamp of "8.19", the version posted on twinsun is only "8.15". I mention this especially because the page is referenced in many places as the "home URL" of the timezone database project, so it seems like it would be worth trying to keep it as up-to-date as possible.... (The tz-arts.htm file on the twinsun site is also a few revions behind the current tzcode version, for what it's worth.) Thanks. Nathan ---------------------------------------------------------------------------- Nathan Stratton Treadway - nathanst(a)ontko.com - Mid-Atlantic region Ray Ontko & Co. - Software consulting services - http://www.ontko.com/ GPG Key: http://www.ontko.com/~nathanst/gpg_key.txt ID: 1023D/ECFB6239 Key fingerprint = 6AD8 485E 20B9 5C71 231C 0C32 15F3 ADCD ECFB 6239

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No DST in Mauritius the coming summer
by Steffen Thorsen June 5, 2009

June 5, 2009

According to several sources, Mauritius will not continue to observe DST the coming summer, which means that the current "max" rules for Mauritius should probably be changed to "only" rules. Some sources, in French: http://www.defimedia.info/news/946/Rashid-Beebeejaun-:-%C2%AB-L%E2%80%99heu… http://lexpress.mu/Story/3398~Beebeejaun---Les-objectifs-d-%C3%A9conomie-d-… Our wrap-up: http://www.timeanddate.com/news/time/mauritius-dst-will-not-repeat.html Regards, Steffen Thorsen - timeanddate.com

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