Kaixo! On Thu, May 13, 2004 at 01:48:07PM +0200, Gwenole Beauchesne wrote: > Adrian Stanciu <adrian@sadyc.net> wrote > > > I write to you because you're listed as packager for libc6 or timezone. > > > > Recently I have noticed that Bucharest (Romania) has GMT+3 timezone > > (using /usr/share/zoneinfo/Europe/Bucharest) Has it? I looked in both 9.2 (glibc 2.3.2) and 10.0 (glibc 2.3.3) and both have EEST instead, for Europe/Bucharest. (which is +03:00 ahead of GMT, right now, but not always; that's the difference between a GMT+xxxx timezone (which is always at that hour and an xxT timezone, which may have its difference change over time) Here is the source definition for "Europe/Bucharest" (only last line matters, others are for zoneinfo in previous times) > # Zone NAME GMTOFF RULES FORMAT [UNTIL] > Zone Europe/Bucharest 1:44:24 - LMT 1891 Oct ... > 2:00 EU EE%sT That is, it's name is "EET" for a winter time of GMT+0200, and "EEST" for a summer time of GMT+0300; the way the winter/summer time is changed is done following the "EU" rules. |# Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S |Rule EU 1981 max - Mar lastSun 1:00u 1:00 S |Rule EU 1996 max - Oct lastSun 1:00u 0 - (the hour changes are on last sunday of March at 01:00 UTC and last Sunday of October at 01:00 UTC; on March the rule says it adds +01:00 to the timezone, and the extra letter is "S" (EE%sT -> EEST); on October the rule says it adds nothing and no extra letter (EE%sT->EET)) So; to define properly a zoneinfo entry several information are needed: - the base difference to UTC (also called GMT timezone, even if they aren't exactly the same) - the timezone code(s) to use - if the difference tgo UTC changes during the year (eg: summer/winter hours), the rules of the change - from when (and possibly until when) that info is valid On the comments for "Europe/Bucharest" there is: > # Nine O'clock</a> (1998-10-23) reports that the switch occurred at > # 04:00 local time in fall 1998. For lack of better info, > # assume that Romania and Moldova switched to EU rules in 1997, > # the same year as Bulgaria. The previous Rules for "Europe/Bucharest" were: - "Romania" (until 1981) - "C-Eur" (until 1991) - "Romania" (until 1994) - "E-Eur" (until 1997) but those only define the way the summer/winter change is done (day and hour of the switch), the time difference with GMT is 02:00 (+01:00 in summer) since 1931 according to the source. >> Recently I have noticed that Bucharest (Romania) has GMT+3 timezone And what should it be? Is there some place we could refer for official data? >> I think this is a general libc "bug", Yes; timezone info comes with glibc and is thus common to all systems using GNU libc. -- Ki ça vos våye bén, Pablo Saratxaga http://chanae.walon.org/pablo/ PGP Key available, key ID: 0xD9B85466 [you can write me in Walloon, Spanish, French, English, Catalan or Esperanto] [min povas skribi en valona, esperanta, angla aux latinidaj lingvoj]
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