IANA time zone database: Difference between revisions

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== Abbreviations ==
== Abbreviations ==
* proposal to change to [[Internationalized time point unique time zone abbreviations]] at http://mm.icann.org/pipermail/tz/2012-October/018362.html
[[IANA time zone database - time zone acronyms]]
 
 
=== 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 ===
{| class="wikitable"
! 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 ==
== Bugs ==

Revision as of 2013-09-19T12:00:37

Abbreviations

IANA time zone database - time zone acronyms

Bugs

IANA time zone database - bugs

Zone renaming

Removal

Localization

CLDR

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

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

Zone changes

2013-08-11 

-AQ     -7750+16636     Antarctica/McMurdo      McMurdo Station, Ross Island
-AQ     -9000+00000     Antarctica/South_Pole   Amundsen-Scott Station, South Pole
+AQ     -7750+16636     Pacific/Auckland        McMurdo, South Pole, Scott (New Zealand time)

So Pacific/Auckland now has two pairs of coordinates, the new AQ-one and the old NZ-one. 

NZ	-3652+17446	Pacific/Auckland	most locations
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