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
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
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
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
DAVT DAVIS TIME (Antarctica) UTC + 7
DDUT DUMONT D 'URVILLE TIME UTC + 10
DST DAYLIGHT SAVING TIME VARIES
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
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
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
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
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
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
LHDT LORD HOWE DAYLIGHT TIME UTC + 11
LHST LORD HOWE STANDARD TIME UTC + 10:30
LINT LINE ISLANDS TIME UTC + 14
MAGT MAGADAN TIME UTC + 10
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
NCT NEW CALEDONIA TIME UTC + 11
NDT NEWFOUNDLAND DAYLIGHT TIME UTC - 2:30
NFT NORFOLK TIME UTC + 11:30
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
OMST OMSK STANDARD TIME UTC + 6
OMSST OMSK SUMMER TIME UTC + 7
ORAT ORAL TIME UTC + 5
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
QYZT QYZYLORDA TIME (Kazakhstan) UTC +6
RET REUNION TIME UTC + 4
ROTT ROTHERA (RESEARCH STATION) TIME (Antarctica) UTC - 3
SAKT SAKHALIN TIME UTC + 10
SAKST SAKHALIN SUMMER TIME UTC + 12
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
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
TRUT TRUK TIME (Micronesia) UTC + 10
TVT TUVALU TIME UTC + 12
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
VET VENEZUELAN STANDARD TIME UTC - 4:30
VLAT VLADIVOSTOK TIME UTC + 10
VLAST VLADIVOSTOK SUMMER TIME UTC + 11
VOLT VOLGOGRAD TIME UTC + 4
VUT VANUATU TIME UTC + 11
WAKT WAKE ISLAND TIME UTC + 12
WAT WEST AFRICA TIME UTC + 1
WART WEST ARGENTINA TIME UTC - 4
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
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


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