Last update: 05.01.2012
The timezone definitions change each year, so the list is in constant change.
The goal was to find one representative timezone for each region. Ideally this would result in 48 definitions, 24 for standard time and 24 for daylight saving time.
Because countries in the same timezone have different begin and end times for daylight saving time the list needed to be adopted to this fact.
The information on this page was taken out from:
ftp://elsie.nci.nih.gov/pub/
and
http://www.timeanddate.com/worldclock/
The TZ value marks the UTC offset aswell as begin and end of daylight saving time in Posix conform standard.
| Official Timezone Name | Other Common Timezone Name | Abbreviation (Standard Time) |
Abbreviation (Daylight Saving Time) |
Deviation from UTC (for Standard Time) |
Timezone Uses Daylight Saving Time | TZ (valid for 2012) |
|---|---|---|---|---|---|---|
| Pacific/Niue | NUT | UTC-11 | no | NUT+11 | ||
| Pacific/Honolulu | US/Hawaii | HAST | UTC-10 | no | HAST+10 | |
| America/Anchorage | US/Alaska | AKST | AKDT | UTC-9 | yes | AKST+9AKDT,M3.2.0,M11.1.0 |
| America/Los_Angeles | US/Pacific | PST | PDT | UTC-8 | yes | PST+8PDT,M3.2.0,M11.1.0 |
| America/Tijuana | PST | PDT | UTC-8 | yes | PST+8PDT,M3.2.0,M11.1.0 | |
| America/Phoenix | US/Arizona | MST | UTC-7 | no | MST+7 | |
| America/Denver | US/Mountain | MST | MDT | UTC-7 | yes | MST+7MDT,M3.2.0,M11.1.0 |
| America/Mazatlan | MST | MDT | UTC-7 | yes | MST+7MDT,M4.1.0,M10.5.0 | |
| America/Chicago | US/Central | CST | CDT | UTC-6 | yes | CST+6CDT,M3.2.0,M11.1.0 |
| America/Regina | Canada/Saskatchewan | CST | UTC-6 | no | CST+6 | |
| America/Mexico_City | CST | CDT | UTC-6 | yes | CST+6CDT,M4.1.0,M10.5.0 | |
| America/Bogota | COT | UTC-5 | no | COT+5 | ||
| America/New_York | US/Eastern | EST | EDT | UTC-5 | yes | EST+5EDT,M3.2.0,M11.1.0 |
| America/Caracas | VET | UTC-4:30 | no | VET+4:30 | ||
| America/Halifax | Canada/Atlantic | AST | ADT | UTC-4 | yes | AST+4ADT,M3.2.0,M11.1.0 |
| America/Santiago | CLT | CLST | UTC-4 | yes | CLT+4CLST,M10.2.0,M3.2.0 | |
| America/La_Paz | BOT | UTC-4 | no | BOT+4 | ||
| America/St_Johns | Canada/Newfoundland | NST | NDT | UTC-3:30 | yes | NST+3:30NDT,M3.2.0,M11.1.0 |
| America/Sao_Paulo | Brazil/East | BRT | BRST | UTC-3 | yes | BRT+3BRST,M10.3.0,M2.3.0 |
| America/Buenos_Aires | ART | ARST | UTC-3 | no | ART+3 | |
| America/Montevideo | UYT | UYST | UTC-3 | yes | UYT+3UYST,M10.1.0,M3.2.0 | |
| Atlantic/South_Georgia | Atlantic/King_Edward_Point | GST | UTC-2 | no | GST+2 | |
| Atlantic/Azores | AZOT | AZOST | UTC-1 | yes | AZOT+1AZOST,M3.5.0,M10.5.0 | |
| Atlantic/Cape_Verde | Atlantic/Praia | CVT | UTC-1 | no | CVT+1 | |
| Africa/Casablanca | WET | UTC | no | WET+0 | ||
| UTC | UTC | --- | ||||
| Europe/London | GMT | BST | UTC | yes | GMT+0BST,M3.5.0,M10.5.0 | |
| Europe/Berlin | CET | CEST | UTC+1 | yes | CET-1CEST,M3.5.0,M10.5.0 | |
| Africa/Kinshasa | WAT | UTC+1 | no | WAT-1 | ||
| Europe/Istanbul | EET | EEST | UTC+2 | yes | EET-2EEST,M3.5.0,M10.5.0 | |
| Africa/Cairo | EET | EEST | UTC+2 | no | EET-2 | |
| Asia/Jerusalem | IST | IDT | UTC+2 | yes | IST-2IDT,M3.5.5,M9.4.0 | |
| Africa/Johannesburg | SAST | UTC+2 | no | SAST-2 | ||
| Europe/Moscow | MSK | MSD | UTC+3 | yes (all year) | MSD-4 | |
| Africa/Nairobi | EAT | UTC+3 | no | EAT-3 | ||
| Asia/Baghdad | AST | ADT | UTC+3 | no | AST-3 | |
| Asia/Tehran | IRST | IRDT | UTC+3:30 | yes | IRST-3:30IRDT,M3.3.3,M9.3.5 | |
| Asia/Muscat | GST | UTC+4 | no | GST-4 | ||
| Asia/Baku | AZT | AZST | UTC+4 | yes | AZT-4AZST,M3.5.0,M10.5.0 | |
| Asia/Kabul | AFT | UTC+4:30 | no | AFT-4:30 | ||
| Asia/Karachi | PKT | UTC+5 | no | PKT-5 | ||
| Asia/Kolkata | IST | UTC+5:30 | no | IST-5:30 | ||
| Asia/Katmandu | NPT | UTC+5:45 | no | NPT-5:45 | ||
| Asia/Almaty | ALMT | UTC+6 | no | ALMT-6 | ||
| Asia/Dhaka | BST | UTC+6 | no | BST-6 | ||
| Asia/Rangoon | Asia/Naypyidaw | MMT | UTC+6:30 | no | MMT-6:30 | |
| Asia/Bangkok | ICT | UTC+7 | no | ICT-7 | ||
| Asia/Hong_Kong | HKT | UTC+8 | no | HKT-8 | ||
| Asia/Singapore | SGT | UTC+8 | no | SGT-8 | ||
| Australia/Perth | WST | WDT | UTC+8 | no | WST-8 | |
| Asia/Taipei | CST | UTC+8 | no | CST-8 | ||
| Asia/Tokyo | JST | UTC+9 | no | JST-9 | ||
| Asia/Seoul | KST | UTC+9 | no | KST-9 | ||
| Australia/Adelaide | CST | CDT | UTC+9:30 | yes | CST-9:30CDT,M10.1.0,M4.1.0 | |
| Australia/Darwin | CST | UTC+9:30 | no | CST-9:30 | ||
| Australia/Sydney | EST | EDT | UTC+10 | yes | EST-10EDT,M10.1.0,M4.1.0 | |
| Australia/Brisbane | EST | UTC+10 | no | EST-10 | ||
| Pacific/Noumea | NCT | UTC+11 | no | NCT-11 | ||
| Pacific/Auckland | NZST | NZDT | UTC+12 | yes | NZST-12NZDT,M9.5.0,M4.1.0 | |
| Pacific/Kwajalein | MHT | UTC+12 | no | MHT-12 | ||
| Pacific/Apia | Pacific/Samoa | WST | UTC+13 | yes | WST-13WST,M9.5.0,M4.1.6 | |
| Pacific/Line_Islands | LINT | UTC+14 | no | LINT-14 |