Time Zone Abbreviations
Time Zone Abbreviations are a convenient and efficient way of indicating a time zone. Times zone abbreviations are not unique to a particular geographic location. As an example, the time zone abbreviation "IST" can refer to Irish Summer Time, Israel Standard Time or Indian Summer Time all of which observe different time zones..
Time Zone Abbreviations offer many advantages over writing the full name of the Time Zone. They are shorter and can be used more effectively to express a time zone such as 2:00 PM EST. Compare this to writing the full name of the time zone which would be 2:00 PM Eastern Standard Time. In verbal communications the opposite is true. It is often preferable for purposes of clarity to use the full time zone name rather than the time zone abbreviation. As an example, you may hear on the radio or television a program time announced as 5:00 Eastern Standard Time rather than 5:00 EST.
Military time zones are used worldwide for both military and civilian purposes. They represent each of the twenty four time zones in use around the world. Learn more about Military Time Zones here.
The time zone abbreviation for Coordinated Universal Time is (UTC) and the time zone abbreviation for Greenwich Mean Time is (GMT). The (-8h) in PST or Pacific Standard Time refers to that time zone being eight hours behind UTC or GMT and so forth for the other Time Zones.
Time Zone Abbreviations with UTC/GMT Offsets
| ABBREVIATION | TIME ZONE NAME | UTC OFFSET |
| A | ALPHA TIME ZONE | UTC + 1 |
| ACDT | AUSTRALIAN CENTRAL DAYLIGHT TIME | UTC + 10:30 |
| ACST | AUSTRALIAN CENTRAL STANDARD TIME | UTC + 9:30 |
| ACWT | AUSTRALIAN CENTRAL WESTERN TIME | UTC + 8:45 |
| ADT | ATLANTIC DAYLIGHT TIME (Caribbean, North America) | UTC - 3 |
| ADT | ARABIA DAYLIGHT TIME | UTC + 3 |
| ACT | ACRE TIME (Brazil) | UTC - 5 |
| AEDT | AUSTRALIAN EASTERN DAYLIGHT TIME | UTC + 11 |
| AEST | AUSTRALIAN EASTERN STANDARD TIME | UTC + 10 |
| AFT | AFGHANISTAN TIME | UTC + 4:30 |
| AKDT | ALASKA DAYLIGHT TIME | UTC - 8 |
| AKST | ALASKA STANDARD TIME | UTC - 9 |
| ALMT | ALMA-ATA TIME | UTC + 6 |
| AMT | ARMENIA TIME | UTC + 4 |
| AMT | AMAZON TIME | UTC - 4 |
| AMST | AMAZON SUMMER TIME | UTC - 3 |
| AMST | ARMENIA SUMMER TIME | UTC + 5 |
| ANAT | ANADYR TIME (Russia) | UTC + 12 |
| ANAST | ANADYR SUMMER TIME (Russia) | UTC + 12 |
| AQTT | AQTOBE TIME (Kazakhstan) | UTC + 5 |
| ART | ARGENTINA TIME | UTC - 3 |
| AST | ATLANTIC STANDARD TIME (Caribbean, North America) | UTC - 4 |
| AST | ARAB STANDARD TIME | UTC + 3 |
| AST | ARABIA STANDARD TIME | UTC + 3 |
| AWDT | AUSTRALIAN WESTERN DAYLIGHT TIME | UTC + 9 |
| AWST | AUSTRALIAN WESTERN STANDARD TIME | UTC + 8 |
| AZOT | AZORES TIME | UTC - 1 |
| AZOST | AZORES SUMMER TIME | UTC + 0 |
| AZT | AZERBAIJAN TIME | UTC + 4 |
| AZST | AZERBAIJAN SUMMER TIME | UTC + 5 |
| B | BRAVO TIME ZONE | UTC + 2 |
| BNT | BRUNEI TIME | UTC + 8 |
| BDT | BANGLADESH TIME (also see BST) | UTC + 6 |
| BOT | BOLIVIA TIME | UTC - 4 |
| BRT | BRASILIA TIME | UTC - 3 |
| BRST | BRASILIA SUMMER TIME | UTC - 2 |
| BST | BRITISH SUMMER TIME | UTC + 1 |
| BST | BANGLADESH STANDARD TIME (also see BDT) | UTC + 6 |
| BTT | BHUTAN TIME | UTC + 6 |
| C | CHARLIE TIME ZONE | UTC + 3 |
| CAST | CASEY TIME (Antarctica) | UTC + 8 |
| CAT | CENTRAL AFRICA TIME | UTC + 2 |
| CCT | COCOS ISLANDS TIME | UTC + 6:30 |
| CDT | CENTRAL DAYLIGHT TIME (Australia) | UTC + 10:30 |
| CDT | CENTRAL DAYLIGHT TIME (North America & Caribbean) | UTC - 5 |
| CEDT | CENTRAL EUROPEAN DAYLIGHT TIME | UTC + 2 |
| CEST | CENTRAL EUROPEAN SUMMER TIME | UTC + 2 |
| CET | CENTRAL EUROPEAN TIME (standard time) | UTC + 1 |
| CHADT | CHATHAM ISLAND DAYLIGHT TIME | UTC + 13:45 |
| CHAST | CHATHAM ISLAND STANDARD TIME | UTC + 12:45 |
| CHOT | CHOIBALSAN TIME (Mongolia) | UTC + 8 |
| CHOST | CHOIBALSAN SUMMER TIME (Mongolia) | UTC + 9 |
| CHsT | CHAMORRO STANDARD TIME | UTC + 10 |
| CHUT | CHUUK TIME | UTC + 10 |
| CIT | CENTRAL INDONESIAN TIME (see abbreviation WITA) | UTC + 8 |
| CKT | COOK ISLAND TIME | UTC - 10 |
| CLST | CHILE SUMMER TIME | UTC - 3 |
| CLT | CHILE STANDARD TIME | UTC - 4 |
| COT | COLUMBIA TIME | UTC - 5 |
| CST | CENTRAL STANDARD TIME (Australia) | UTC + 9:30 |
| CST | CENTRAL STANDARD TIME (North America & Central America) | UTC - 6 |
| CST | CUBA STANDARD TIME | UTC - 5 |
| CST | CHINA STANDARD TIME | UTC + 8 |
| CVT | CAPE VERDE TIME | UTC - 1 |
| CWST | CENTRAL WESTERN AUSTRALIA TIME (Eucla) | UTC + 8:45 |
| CXT | CHRISTMAS ISLAND TIME | UTC + 7 |
| D | DELTA TIME ZONE | UTC + 4 |
| DAVT | DAVIS TIME (Antarctica) | UTC + 7 |
| DDUT | DUMONT D 'URVILLE TIME | UTC + 10 |
| DST | DAYLIGHT SAVING TIME | VARIES |
| E | ECHO TIME ZONE | UTC + 5 |
| EASST | EASTERN ISLAND SUMMER TIME | UTC - 5 |
| EAST | EASTERN ISLAND STANDARD TIME | UTC - 6 |
| EAT | EAST AFRICA TIME | UTC + 3 |
| ECT | ECUADOR TIME | UTC - 5 |
| EDT | EASTERN DAYLIGHT TIME (Australia and Pacific) | UTC + 11 |
| EDT | EASTERN DAYLIGHT TIME (North America and Caribbean) | UTC - 4 |
| EEDT | EASTERN EUROPEAN DAYLIGHT TIME | UTC + 3 |
| EEST | EASTERN EUROPEAN SUMMER TIME | UTC + 3 |
| EET | EASTERN EUROPEAN TIME | UTC + 2 |
| EGT | EASTERN GREENLAND TIME | UTC - 1 |
| EGST | EASTERN GREENLAND SUMMER TIME | UTC + 0 |
| EST | EASTERN STANDARD TIME (Australia and Pacific) | UTC + 10 |
| EST | EASTERN STANDARD TIME (North America and Caribbean) | UTC - 5 |
| EIT | EASTERN INDONESIAN TIME (see WIT) | UTC + 9 |
| F | FOXTROT TIME ZONE | UTC + 6 |
| FET | FURTHER-EASTERN EUROPEAN TIME | UTC + 3 |
| FJT | FIJI TIME | UTC + 12 |
| FJST | FIJI SUMMER TIME | UTC + 13 |
| FKST | FALKLAND ISLANDS SUMMER TIME | UTC - 3 |
| FKT | FALKLAND ISLANDS TIME | UTC - 4 |
| FNT | FERNANDO de NORONHA | UTC - 2 |
| G | GOLF TIME ZONE | UTC + 7 |
| GALT | GALAPAGOS TIME | UTC - 6 |
| GAMT | GAMBIER TIME | UTC - 9 |
| GET | GEORGIA STANDARD TIME | UTC + 4 |
| GFT | FRENCH GUIANA TIME | UTC - 3 |
| GILT | GILBERT ISLAND TIME | UTC + 12 |
| GMT | GREENWICH MEAN TIME | UTC + 0 |
| GST | GULF STANDARD TIME | UTC + 4 |
| GST | SOUTH GEORGIA TIME (South Georgia and the South Sandwich Islands) | UTC - 2 |
| GYT | GUYANA TIME | UTC - 4 |
| H | HOTEL TIME ZONE | UTC + 8 |
| HADT | HAWAII-ALEUTIAN DAYLIGHT TIME | UTC - 9 |
| HAST | HAWAII-ALEUTIAN STANDARD TIME | UTC - 10 |
| HKT | HONG KONG TIME | UTC + 8 |
| HOVT | HOVD TIME (Mongolia) | UTC + 7 |
| HOVST | HOVD SUMMER TIME (Mongolia) | UTC + 8 |
| HST | HAWAII STANDARD TIME | UTC - 10 |
| I | INDIA TIME ZONE | UTC + 9 |
| ICT | INDOCHINA TIME | UTC + 7 |
| IDT | ISRAEL DAYLIGHT TIME | UTC + 3 |
| IOT | INDIAN CHAGOS TIME (British Indian Ocean Territory) | UTC + 6 |
| IRDT | IRAN DAYLIGHT TIME | UTC + 4:30 |
| IRKT | IRKUTSK TIME | UTC + 8 |
| IRKST | IRKUTSK SUMMER TIME | UTC + 9 |
| IRST | IRAN STANDARD TIME | UTC + 3:30 |
| IST | INDIAN STANDARD TIME | UTC + 5:30 |
| IST | ISRAEL STANDARD TIME | UTC + 2 |
| IST | IRISH STANDARD TIME (IST is used during daylight saving time) | UTC + 1 |
| JST | JAPAN STANDARD TIME | UTC + 9 |
| K | KILO TIME ZONE | UTC +10 |
| KGT | KYRGYZSTAN TIME | UTC + 6 |
| KOST | KOSRAE TIME (Micronesia) | UTC + 11 |
| KRAT | KRASNOYARSK TIME | UTC + 7 |
| KRAST | KRASNOYARSK SUMMER TIME | UTC + 8 |
| KST | KOREA STANDARD TIME | UTC + 9 |
| KUYT | KUYBYSHEV TIME (Samara Time as of 1991) | UTC + 4 |
| L | LIMA TIME ZONE | UTC + 11 |
| LHDT | LORD HOWE DAYLIGHT TIME | UTC + 11 |
| LHST | LORD HOWE STANDARD TIME | UTC + 10:30 |
| LINT | LINE ISLANDS TIME | UTC + 14 |
| M | MIKE TIME ZONE | UTC + 12 |
| MAGT | MAGADAN TIME | UTC + 11 |
| MAGST | MAGADAN SUMMER TIME | UTC + 12 |
| MART | MARQUESAS TIME | UTC - 9:30 |
| MAWT | MAWSON STATION TIME (Antarctic) | UTC + 5 |
| MDT | MOUNTAIN DAYLIGHT TIME (North America) | UTC - 6 |
| MeST | METLAKATLA (Alaska Indian Community) | UTC - 8 |
| MHT | MARSHALL ISLANDS TIME | UTC + 12 |
| MIST | MACQUARIE ISLAND STATION TIME | UTC + 11 |
| MMT | MYANMAR TIME | UTC + 6:30 |
| MSD | MOSCOW SUMMER TIME | UTC + 4 |
| MSK | MOSCOW STANDARD TIME | UTC + 3 |
| MST | MOUNTAIN STANDARD TIME (North America) | UTC - 7 |
| MUT | MAURITIUS TIME | UTC + 4 |
| MVT | MALDIVES TIME | UTC + 5 |
| MYT | MALAYSIA TIME | UTC + 8 |
| N | NOVEMBER TIME ZONE | UTC - 1 |
| NCT | NEW CALEDONIA TIME | UTC + 11 |
| NDT | NEWFOUNDLAND DAYLIGHT TIME | UTC - 2:30 |
| NFT | NORFOLK TIME | UTC + 11 |
| NOVT | NOVOSIBIRSK TIME | UTC + 6 |
| NOVST | NOVOSIBIRSK SUMMER TIME | UTC + 7 |
| NPT | NEPAL TIME | UTC + 5:45 |
| NRT | NAURU TIME | UTC + 12 |
| NST | NEWFOUNDLAND STANDARD TIME | UTC - 3:30 |
| NT | NEWFOUNDLAND TIME | UTC - 3:30 |
| NUT | NIUE TIME | UTC - 11 |
| NZDT | NEW ZEALAND DAYLIGHT TIME | UTC + 13 |
| NZST | NEW ZEALAND STANDARD TIME | UTC + 12 |
| O | OSCAR TIME ZONE | UTC - 2 |
| OMST | OMSK STANDARD TIME | UTC + 6 |
| OMSST | OMSK SUMMER TIME | UTC + 7 |
| ORAT | ORAL TIME | UTC + 5 |
| P | PAPA TIME ZONE | UTC - 3 |
| PDT | PACIFIC DAYLIGHT TIME (North America) | UTC - 7 |
| PET | PERU TIME | UTC - 5 |
| PETT | KAMCHATKA TIME | UTC + 12 |
| PETST | KAMCHATKA SUMMER TIME | UTC + 12 |
| PGT | PAPUA NEW GUINEA TIME | UTC + 10 |
| PHT | PHILIPPINE TIME | UTC + 8 |
| PHOT | PHOENIX ISLAND TIME | UTC + 13 |
| PKT | PAKISTAN STANDARD TIME | UTC + 5 |
| PMDT | PIERRE & MIQUELON DAYLIGHT TIME | UTC - 2 |
| PMST | PIERRE & MIQUELON STANDARD TIME | UTC - 3 |
| PONT | POHNPEI TIME (Formerly Ponape) | UTC+ 11 |
| PST | PACIFIC STANDARD TIME (North America) | UTC - 8 |
| PST | PITCAIRN TIME | UTC - 8 |
| PST | PYONGYANG TIME (North Korea) | UTC + 8:30 |
| PWT | PALAU TIME | UTC + 9 |
| PYT | PARAGUAY TIME | UTC - 4 |
| PYST | PARAGUAY SUMMER TIME | UTC - 3 |
| Q | QUEBEC TIME ZONE | UTC - 4 |
| QYZT | QYZYLORDA TIME (Kazakhstan) | UTC +6 |
| R | ROMEO TIME ZONE | UTC - 5 |
| RET | REUNION TIME | UTC + 4 |
| ROTT | ROTHERA (RESEARCH STATION) TIME (Antarctica) | UTC - 3 |
| S | SIERRA TIME ZONE | UTC - 6 |
| SAKT | SAKHALIN TIME | UTC + 11 |
| SAMT | SAMARA TIME | UTC + 4 |
| SAST | SOUTH AFRICA STANDARD TIME | UTC + 2 |
| SBT | SOLOMON ISLANDS TIME | UTC + 11 |
| SCT | SEYCHELLES TIME | UTC + 4 |
| SGT | SINGAPORE TIME | UTC + 8 |
| SRT | SURINAME TIME | UTC - 3 |
| SLT | SRI LANKA TIME | UTC + 5:30 |
| SLST | SRI LANKA TIME | UTC + 5:30 |
| SRET | SREDNEKOLYMSK TIME | UTC + 11 |
| SST | SAMOA STANDARD TIME (American Samoa) | UTC - 11 |
| SYOT | SYOWA (RESEARCH STATION) TIME (Antarctica) | UTC + 3 |
| T | TANGO TIME ZONE | UTC - 7 |
| TAHT | TAHITI TIME | UTC - 10 |
| TFT | FRENCH SOUTHERN AND ANTARCTIC TERRITORIES TIME | UTC + 5 |
| TJT | TAJIKISTAN TIME | UTC + 5 |
| TKT | TOKELAU TIME | UTC + 13 |
| TLT | EAST TIMOR TIME (Timor-Leste Time) | UTC + 9 |
| TMT | TURKMENISTAN TIME | UTC + 5 |
| TOT | TONGA TIME | UTC + 13 |
| TRT | TURKEY TIME OR TURKISH TIME | UTC + 3 |
| TRUT | TRUK TIME (Micronesia) | UTC + 10 |
| TVT | TUVALU TIME | UTC + 12 |
| U | UNIFORM TIME ZONE | UTC - 8 |
| ULAT | ULAANBAATAR TIME | UTC + 8 |
| ULAST | ULAANBAATAR SUMMER TIME | UTC + 9 |
| UTC | COORDINATED UNIVERSAL TIME | UTC + 0 |
| UYST | URUGUAY SUMMER TIME | UTC - 2 |
| UYT | URUGUAY STANDARD TIME | UTC - 3 |
| UZT | UZBEKISTAN TIME | UTC + 5 |
| V | VICTOR TIME ZONE | UTC - 9 |
| VET | VENEZUELAN STANDARD TIME | UTC - 4 |
| VLAT | VLADIVOSTOK TIME | UTC + 10 |
| VLAST | VLADIVOSTOK SUMMER TIME | UTC + 11 |
| VOLT | VOLGOGRAD TIME | UTC + 4 |
| VUT | VANUATU TIME | UTC + 11 |
| W | WHISKEY TIME ZONE | UTC - 10 |
| WAKT | WAKE ISLAND TIME | UTC + 12 |
| WAT | WEST AFRICA TIME | UTC + 1 |
| WAST | WEST AFRICA SUMMER TIME | UTC + 2 |
| WDT | WESTERN DAYLIGHT TIME (Australia) | UTC + 9 |
| WEDT | WESTERN EUROPEAN DAYLIGHT TIME | UTC + 1 |
| WEST | WESTERN EUROPEAN SUMMER TIME | UTC + 1 |
| WET | WESTERN EUROPEAN TIME | UTC + 0 |
| WFT | WALLIS AND FUTUNA TIME | UTC + 12 |
| WGT | WESTERN GREENLAND TIME | UTC - 3 |
| WGST | WESTERN GREENLAND SUMMER TIME | UTC - 2 |
| WIB | WESTERN INDONESIAN TIME | UTC + 7 |
| WIT | EASTERN INDONESIAN TIME | UTC + 9 |
| WITA | CENTRAL INDONESIAN TIME | UTC + 8 |
| WST | WESTERN SAHARA SUMMER TIME | UTC + 1 |
| WST | WESTERN STANDARD TIME (Australia) | UTC + 8 |
| WST | WESTERN SAMOA TIME (standard time) | UTC + 13 |
| WST | WESTERN SAMOA TIME (*also used during daylight saving time) | UTC + 14 |
| WT | WESTERN SAHARA STANDARD TIME | UTC + 0 |
| X | X-RAY TIME ZONE | UTC - 11 |
| Y | YANKEE TIME ZONE | UTC - 12 |
| YAKT | YAKUTSK TIME | UTC + 9 |
| YAKST | YAKUTSK SUMMER TIME | UTC + 10 |
| YAP | YAP TIME (Micronesia) | UTC + 10 |
| YEKT | YEKATERINBURG TIME | UTC + 5 |
| YEKST | YEKATERINBURG SUMMER TIME | UTC + 6 |
Time Zone Abbreviations by Continent or Region