IANA time zone database: Difference between revisions
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=== | === Components that specify a location === | ||
* Sometimes the ISO 3166-1 alpha-2 country code (cc) is used, then the format often is ccT. | * Sometimes the ISO 3166-1 alpha-2 country code (cc) is used, then the format often is ccT. | ||
* Two letters for locality - xxT | * Two letters for locality - xxT | ||
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GBGT 1966 May 26 # Br Guiana Time | GBGT 1966 May 26 # Br Guiana Time | ||
NEGT 1975 Nov 20 # Dutch Guiana Time | NEGT 1975 Nov 20 # Dutch Guiana Time | ||
=== Components that do not specify a location === | === Components that do not specify a location === |
Revision as of 2013-04-12T16:10:27
Abbreviations
- proposal to change to Internationalized time point unique time zone abbreviations at http://mm.icann.org/pipermail/tz/2012-October/018362.html
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 | Offset mark? | 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 |
|
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 time? | 0:30 |
|
32 | HS | ? | 0:20 |
|
32 | HD | half daylight saving time | 0:30 |
|
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] | TZ coordinator (Paul Eggert) does not want to fix |
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] | TZ coordinator (Paul Eggert) does not fix |
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 |
|
2011-09-17 16:12:16 [6] | TZ coordinator (Paul Eggert) does not fix - reason unknown |
Australia/Antarctica | Antarctica/Macquarie given as AQ territory, not AU territory. | 2013-04-12 |
Localization
CLDR
http://unicode.org/repos/cldr/trunk/common/supplemental/metaZones.xml
- territory 001 - might refer to the UN M.49 code for "World".