IANA time zone database: Difference between revisions

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Revision as of 2013-04-18T16:01:07

Abbreviations


Components that specify a location

  • Sometimes the ISO 3166-1 alpha-2 country code (cc) is used, then the format often is ccT.
  • Two letters for locality - xxT
    • Brazil - Fernando Noronha: FNT
  • Two letter for locality - xxST
    • Lord Howe : LHST
  • Two letters for locality - xx%sT
    • Several zone in Brazil that use Brasilia BRT (BR is also the country code)

Other:

Kampala:
3:00	-	EAT	1930
2:30	-	BEAT	1948
2:45	-	BEAUT	1957
Aruba (in ISO 3166-1 AW)
-4:00	-	AST
GBGT	1966 May 26 # Br Guiana Time
NEGT	1975 Nov 20 # Dutch Guiana Time

Components that do not specify a location

position from right Letter Meaning Save Occurrence
1 T Time N/A always
2 D Daylight (Saving) 1:00 several
2 S Standard N/A several
2 S Summer 1:00 europe file: e.g. BST British Summer Time, CEST Central European Summer Time
2 W War 1:00 northamerica file: US and Mexico
2 P Peace 1:00 northamerica file: US
2 M Mean N/A
  • africa file: LMT # Lisbon Mean Time, FMT # Freetown Mean Time, PMT # Paris Mean Time
  • europe file: MMT # Moscow Mean Time
  • southamerica file: CMT # Cordoba Mean Time, CMT # Calamarca MT(!), QMT # Quito Mean Time, BMT # Bogota Mean Time, SMT # Stanley Mean Time, SMT # Santiago Mean Time, MMT # Montevideo MT(!), PMT # Paramaribo Mean Time, CMT # Caracas Mean Time
2 M Midsummer 2:00 europe file: Moscow - M # Midsummer, also for Spain, France, Germany/SovietZone
32 LM Local Mean N/A several
32 DS Double Summer 2:00 europe file: MDST # Moscow Double Summer Time, BDST - British Double Summer Time
32 DD Double Daylight (Saving) 2:00 northamerica file: StJohns 1988)
32 HS Half Summer 0:30
  • australasia file: Pacific/Rarotonga CK%sT and "HS"
  • southamerica file: Uruguay
32 HS Half Summer 0:20
  • africa file: Rule Ghana 1936-1942
32 HD Half Daylight (Saving) 0:30
  • northamerica file: Rule Belize 1918-1942
  • northamerica file: Rule DR 1969-1973

Bugs

Some fixes can be found at ANNA time zone database.

Country Description Open since at least Why not fixed?
Australia EST and CST are used as acronyms for AEST/AEDT and CEST/CEDT, i.e. during DST one cannot tell from the acronym what zone is meant. 2006-06-02 04:08:36 [1] under consideration
Indonesia WIT means Western Indonesian Time, but in local Indonesian language, WIT stands for Waktu Indonesia Timur (Eastern Indonesian Time), change requests - without mentioning the ambiguity - go back to 2003 [2] 2013-02-13 14:17:58 [3]
Norway No IANA zone defined for Bouvet Island while Norwegian law sets a standard time http://article.gmane.org/gmane.comp.time.tz/5218/ 2012-05-29 18:32:23 [4] TZ coordinator (Paul Eggert) does not want to fix
Russia
  • Zones in Siberia are wrong
  • patch provided 2012-05-02 22:18:43 by Arthur David Olson [5]
2011-09-17 16:12:16 [6] 2013-04-18 under consideration
Australia/Antarctica Antarctica/Macquarie given as AQ territory instead of AU territory. 2013-04-12 2013-04-18 Patch under consideration
French Southern and Antarctic Land Zone missing: 2012-05-12 [7]

Localization

CLDR

http://unicode.org/repos/cldr/trunk/common/supplemental/metaZones.xml

  • territory 001 - might refer to the UN M.49 code for "World".