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Timezones abbreviations

Below is a list of all international time zones and its abbreviations. Time zones are often represented by alphabetic abbreviations such as "EST, CST and WST", but these are not part of the international time and date standard ISO 8601 and their use as sole designator for a time zone is discouraged. Such designations can be ambiguous; for example, "CST" can mean China Standard Time (UTC+8), Cuba Standard Time (UTC−5), and Central Standard Time (North American, UTC−6), and it is also a widely used variant of ACST (Australian Central Standard Time, UTC+9:30). Such designations predate both ISO 8601 and the internet era; in an earlier era, they were sufficiently unambiguous for many practical uses within a national context (for example, in railway timetables and business correspondence), but their ambiguity explains their deprecation in the internet era, when communications more often cannot rely on implicit geographic context to supply part of the meaning.

Timezone abbv. Timezone names Continent
Location
Offset
ACDTAustralian Central Daylight TimeAustraliaUTC +10:30
CDTCentral Daylight TimeAustraliaUTC +10:30
CDSTCentral Daylight Savings TimeAustraliaUTC +10:30
ACSTAustralian Central Standard TimeAustraliaUTC +9:30
CSTCentral Standard TimeAustraliaUTC +9:30
ACTAcre TimeSouth AmericaUTC -5
ACTAustralian Central TimeAustraliaUTC +9:30 / +10:30
ACWSTAustralian Central Western Standard TimeAustraliaUTC +8:45
ADTArabia Daylight TimeAsiaUTC +4
ASTArabia Summer TimeAsiaUTC +4
ADTAtlantic Daylight TimeNorth AmericaUTC -3
ADSTAtlantic Daylight Saving TimeAtlanticUTC -3
ASTAtlantic Summer TimeAtlanticUTC -3
HAAHeure Avancée de l'Atlantique (French)AtlanticUTC -3
AEDTAustralian Eastern Daylight TimeAustraliaUTC +11
EDTEastern Daylight TimeAustraliaUTC +11
EDSTEastern Daylight Saving TimeAustraliaUTC +11
AESTAustralian Eastern Standard TimeAustraliaUTC +10
ESTEastern Standard TimeAustraliaUTC +10
AETAustralian Eastern TimeAustraliaUTC +10
AETAustralian Eastern TimeAustraliaUTC +10:00 / +11:00
AFTAfghanistan TimeAsiaUTC +4:30
AKDTAlaska Daylight TimeNorth AmericaUTC -8
ADSTAlaska Daylight Saving TimeNorth AmericaUTC -8
AKSTAlaska Standard TimeNorth AmericaUTC -9
ATAlaska TimeNorth AmericaUTC -9
ALMTAlma-Ata TimeAsiaUTC +6
AMSTAmazon Summer TimeSouth AmericaUTC -3
AMSTArmenia Summer TimeAsiaUTC +5
AMDTArmenia Daylight TimeAsiaUTC +5
AMTAmazon TimeSouth AmericaUTC -4
AMTArmenia TimeAsiaUTC +4
ANASTAnadyr Summer TimeAsiaUTC +12
ANATAnadyr TimeAsiaUTC +12
AQTTAqtobe TimeAsiaUTC +5
ARTArgentina TimeSouth America, AntarcticaUTC -3
ASTArabia Standard TimeAsiaUTC +3
ASTArabic Standard TimeAsiaUTC +3
ASTAl Manamah Standard TimeAsiaUTC +3
ASTAtlantic Standard TimeNorth America, Atlantic, CaribbeanUTC -4
ATAtlantic TimeNorth America, Atlantic, CaribbeanUTC -4
ASTTiempo Estándar del Atlántico (Spanish)North America, Atlantic, CaribbeanUTC -4
HNAHeure Normale de l'Atlantique (French)North America, Atlantic, CaribbeanUTC -4
ATAtlantic TimeNorth America, AtlanticUTC -4:00 / -3:00
AWDTAustralian Western Daylight TimeAustraliaUTC +9
WDTWestern Daylight TimeAustraliaUTC +9
WSTWestern Summer TimeAustraliaUTC +9
AWSTAustralian Western Standard TimeAustraliaUTC +8
WSTWestern Standard TimeAustraliaUTC +8
WATWestern Australia TimeAustraliaUTC +8
AZOSTAzores Summer TimeAtlanticUTC +0
AZODTAzores Daylight TimeAtlanticUTC +0
AZOTAzores TimeAtlanticUTC -1
AZOSTAzores Standard TimeAtlanticUTC -1
AZSTAzerbaijan Summer TimeAsiaUTC +5
AZTAzerbaijan TimeAsiaUTC +4
AoEAnywhere on EarthPacificUTC -12
BNTBrunei Darussalam TimeAsiaUTC +8
BDTBrunei TimeAsiaUTC +8
BOTBolivia TimeSouth AmericaUTC -4
BRSTBrasília Summer TimeSouth AmericaUTC -2
BSTBrazil Summer TimeSouth AmericaUTC -2
BSTBrazilian Summer TimeSouth AmericaUTC -2
BRTBrasília TimeSouth AmericaUTC -3
BTBrazil TimeSouth AmericaUTC -3
BTBrazilian TimeSouth AmericaUTC -3
BSTBangladesh Standard TimeAsiaUTC +6
BSTBougainville Standard TimePacificUTC +11
BSTBritish Summer TimeEuropeUTC +1
BDTBritish Daylight TimeEuropeUTC +1
BDSTBritish Daylight Saving TimeEuropeUTC +1
BTTBhutan TimeAsiaUTC +6
CASTCasey TimeAntarcticaUTC +8
CATCentral Africa TimeAfricaUTC +2
CCTCocos Islands TimeIndian OceanUTC +6:30
CDTCentral Daylight TimeNorth AmericaUTC -5
CDSTCentral Daylight Saving TimeNorth AmericaUTC -5
NACDTNorth American Central Daylight TimeNorth AmericaUTC -5
HACHeure Avancée du Centre (French)North AmericaUTC -5
CDTCuba Daylight TimeCaribbeanUTC -4
CESTCentral European Summer TimeEuropeUTC +2
CEDTCentral European Daylight TimeEuropeUTC +2
ECSTEuropean Central Summer TimeEuropeUTC +2
MESZMitteleuropäische Sommerzeit (German)EuropeUTC +2
CETCentral European TimeEuropeUTC +1
ECTEuropean Central TimeEuropeUTC +1
CETCentral Europe TimeEurope, AfricaUTC +1
MEZMitteleuropäische Zeit (German)EuropeUTC +1
CHADTChatham Island Daylight TimePacificUTC +13:45
CDTChatham Daylight TimePacificUTC +13:45
CHASTChatham Island Standard TimePacificUTC +12:45
CHOSTChoibalsan Summer TimeAsiaUTC +9
CHODTChoibalsan Daylight TimeAsiaUTC +9
CHODSTChoibalsan Daylight Saving TimeAsiaUTC +9
CHOTChoibalsan TimeAsiaUTC +8
CHUTChuuk TimePacificUTC +10
CIDSTCayman Islands Daylight Saving TimeCaribbeanUTC -4
CISTCayman Islands Standard TimeCaribbeanUTC -5
CITCayman Islands TimeCaribbeanUTC -5
CKTCook Island TimePacificUTC -10
CLSTChile Summer TimeSouth America, AntarcticaUTC -3
CLDTChile Daylight TimeSouth AmericaUTC -3
CLTChile Standard TimeSouth America, AntarcticaUTC -4
CTChile TimeSouth AmericaUTC -4
CLSTChile Standard TimeSouth America, AntarcticaUTC -4
COTColombia TimeSouth AmericaUTC -5
CSTCentral Standard TimeNorth America, Central AmericaUTC -6
CTCentral TimeNorth America, Central AmericaUTC -6
NACSTNorth American Central Standard TimeNorth America, Central AmericaUTC -6
CSTTiempo Central Estándar (Spanish)Central AmericaUTC -6
HNCHeure Normale du Centre (French)Central AmericaUTC -6
CSTChina Standard TimeAsiaUTC +8
CSTCuba Standard TimeCaribbeanUTC -5
CTCentral TimeNorth AmericaUTC -6:00 / -5:00
CVTCape Verde TimeAfricaUTC -1
CXTChristmas Island TimeAustraliaUTC +7
ChSTChamorro Standard TimePacificUTC +9
GSTGuam Standard TimePacificUTC +10
DAVTDavis TimeAntarcticaUTC +7
DDUTDumont-d'Urville TimeAntarcticaUTC +10
EASSTEaster Island Summer TimePacificUTC -5
EADTEaster Island Daylight TimePacificUTC -5
EASTEaster Island Standard TimePacificUTC -6
EATEastern Africa TimeAfrica, Indian OceanUTC +3
EATEast Africa TimeAfrica, Indian OceanUTC +3
ECTEcuador TimeSouth AmericaUTC -5
EDTEastern Daylight TimeNorth America, CaribbeanUTC -4
EDSTEastern Daylight Savings TimeNorth AmericaUTC -4
NAEDTNorth American Eastern Daylight TimeNorth AmericaUTC -4
HAEHeure Avancée de l'Est (French)North America, CaribbeanUTC -4
EDTTiempo de verano del Este (Spanish)North America, CaribbeanUTC -4
EESTEastern European Summer TimeEurope, AsiaUTC +3
EEDTEastern European Daylight TimeEurope, AsiaUTC +3
OESZOsteuropäische Sommerzeit (German)Europe, AsiaUTC +3
EETEastern European TimeEurope, Asia, AfricaUTC +2
OEZOsteuropäische Zeit (German)Europe, Asia, AfricaUTC +2
EGSTEastern Greenland Summer TimeNorth AmericaUTC +0
EGSTEast Greenland Summer TimeNorth AmericaUTC +0
EGTEast Greenland TimeNorth AmericaUTC -1
EGTEastern Greenland TimeNorth AmericaUTC -1
ESTEastern Standard TimeNorth America, Caribbean, Central AmericaUTC -5
ETEastern TimeNorth America, Caribbean, Central AmericaUTC -5
NAESTNorth American Eastern Standard TimeNorth America, Caribbean, Central AmericaUTC -5
ETTiempo del Este (Spanish)North America, Caribbean, Central AmericaUTC -5
HNEHeure Normale de l'Est (French)North America, Caribbean, Central AmericaUTC -5
ETEastern TimeNorth America, CaribbeanUTC -5:00 / -4:00
FETFurther-Eastern European TimeEuropeUTC +3
FJSTFiji Summer TimePacificUTC +13
FJDTFiji Daylight TimePacificUTC +13
FJTFiji TimePacificUTC +12
FKSTFalkland Islands Summer TimeSouth AmericaUTC -3
FKDTFalkland Island Daylight TimeSouth AmericaUTC -3
FKTFalkland Island TimeSouth AmericaUTC -4
FKSTFalkland Island Standard TimeSouth AmericaUTC -4
FNTFernando de Noronha TimeSouth AmericaUTC -2
GALTGalapagos TimePacificUTC -6
GAMTGambier TimePacificUTC -9
GAMTGambier Islands TimePacificUTC -9
GETGeorgia Standard TimeAsia, EuropeUTC +4
GFTFrench Guiana TimeSouth AmericaUTC -3
GILTGilbert Island TimePacificUTC +12
GMTGreenwich Mean TimeEurope, Africa, North America, AntarcticaUTC +0
UTCCoordinated Universal TimeEurope, Africa, North America, AntarcticaUTC +0
GTGreenwich TimeEurope, Africa, North America, AntarcticaUTC +0
GSTGulf Standard TimeAsiaUTC +4
GSTSouth Georgia TimeSouth AmericaUTC -2
GYTGuyana TimeSouth AmericaUTC -4
HDTHawaii-Aleutian Daylight TimeNorth AmericaUTC -9
HADTHawaii Daylight TimeNorth AmericaUTC -9
HKTHong Kong TimeAsiaUTC +8
HOVSTHovd Summer TimeAsiaUTC +8
HOVDTHovd Daylight TimeAsiaUTC +8
HOVDSTHovd Daylight Saving TimeAsiaUTC +8
HOVTHovd TimeAsiaUTC +7
HSTHawaii Standard TimeNorth America, PacificUTC -10
HASTHawaii-Aleutian Standard TimeNorth America, PacificUTC -10
ICTIndochina TimeAsiaUTC +7
IDTIsrael Daylight TimeAsiaUTC +3
IOTIndian Chagos TimeIndian OceanUTC +6
IRDTIran Daylight TimeAsiaUTC +4:30
IRSTIran Summer TimeAsiaUTC +4:30
IDTIran Daylight TimeAsiaUTC +4:30
IRKSTIrkutsk Summer TimeAsiaUTC +9
IRKTIrkutsk TimeAsiaUTC +8
IRSTIran Standard TimeAsiaUTC +3:30
ITIran TimeAsiaUTC +3:30
ISTIndia Standard TimeAsiaUTC +5:30
ITIndia TimeAsiaUTC +5:30
ISTIndian Standard TimeAsiaUTC +5:30
ISTIrish Standard TimeEuropeUTC +1
ISTIrish Summer TimeEuropeUTC +1
ISTIsrael Standard TimeAsiaUTC +2
JSTJapan Standard TimeAsiaUTC +9
KGTKyrgyzstan TimeAsiaUTC +6
KOSTKosrae TimePacificUTC +11
KRASTKrasnoyarsk Summer TimeAsiaUTC +8
KRATKrasnoyarsk TimeAsiaUTC +7
KSTKorea Standard TimeAsiaUTC +9
KSTKorean Standard TimeAsiaUTC +9
KTKorea TimeAsiaUTC +9
KUYTKuybyshev TimeEuropeUTC +4
SAMSTSamara Summer TimeEuropeUTC +4
LHDTLord Howe Daylight TimeAustraliaUTC +11
LHSTLord Howe Standard TimeAustraliaUTC +10:30
LINTLine Islands TimePacificUTC +14
MAGSTMagadan Summer TimeAsiaUTC +12
MAGSTMagadan Island Summer TimeAsiaUTC +12
MAGTMagadan TimeAsiaUTC +11
MAGTMagadan Island TimeAsiaUTC +11
MARTMarquesas TimePacificUTC -9:30
MAWTMawson TimeAntarcticaUTC +5
MDTMountain Daylight TimeNorth AmericaUTC -6
MDSTMountain Daylight Saving TimeNorth AmericaUTC -6
NAMDTNorth American Mountain Daylight TimeNorth AmericaUTC -6
HARHeure Avancée des Rocheuses (French)North AmericaUTC -6
MHTMarshall Islands TimePacificUTC +12
MMTMyanmar TimeAsiaUTC +6:30
MSDMoscow Daylight TimeEuropeUTC +4
MSKMoscow Standard TimeEurope, AsiaUTC +3
MCKMoscow TimeEurope, AsiaUTC +3
MSTMountain Standard TimeNorth AmericaUTC -7
MTMountain TimeNorth AmericaUTC -7
NAMSTNorth American Mountain Standard TimeNorth AmericaUTC -7
HNRHeure Normale des Rocheuses (French)North AmericaUTC -7
MTMountain TimeNorth AmericaUTC -7:00 / -6:00
MUTMauritius TimeAfricaUTC +4
MVTMaldives TimeAsiaUTC +5
MYTMalaysia TimeAsiaUTC +8
MSTMalaysian Standard TimeAsiaUTC +8
NNovember Time ZoneMilitaryUTC -1
NCTNew Caledonia TimePacificUTC +11
NDTNewfoundland Daylight TimeNorth AmericaUTC -2:30
HATHeure Avancée de Terre-Neuve (French)North AmericaUTC -2:30
NFDTNorfolk Daylight TimeAustraliaUTC +12
NFDTNorfolk Island Daylight TimeAustraliaUTC +12
NFTNorfolk TimeAustraliaUTC +11
NFTNorfolk Island TimeAustraliaUTC +11
NOVSTNovosibirsk Summer TimeAsiaUTC +7
OMSSTOmsk Summer TimeAsiaUTC +7
NOVTNovosibirsk TimeAsiaUTC +7
OMSTOmsk Standard TimeAsiaUTC +7
NPTNepal TimeAsiaUTC +5:45
NRTNauru TimePacificUTC +12
NSTNewfoundland Standard TimeNorth AmericaUTC -3:30
HNTHeure Normale de Terre-Neuve (French)North AmericaUTC -3:30
NUTNiue TimePacificUTC -11
NZDTNew Zealand Daylight TimePacific, AntarcticaUTC +13
NZSTNew Zealand Standard TimePacific, AntarcticaUTC +12
OMSSTOmsk Summer TimeAsiaUTC +7
NOVSTNovosibirsk Summer TimeAsiaUTC +7
OMSTOmsk Standard TimeAsiaUTC +6
OMSTOmsk TimeAsiaUTC +6
NOVTNovosibirsk TimeAsiaUTC +6
ORATOral TimeAsiaUTC +5
PDTPacific Daylight TimeNorth AmericaUTC -7
PDSTPacific Daylight Saving TimeNorth AmericaUTC -7
NAPDTNorth American Pacific Daylight TimeNorth AmericaUTC -7
HAPHeure Avancée du Pacifique (French)North AmericaUTC -7
PETPeru TimeSouth AmericaUTC -5
PETSTKamchatka Summer TimeAsiaUTC +12
PETTKamchatka TimeAsiaUTC +12
PETTPetropavlovsk-Kamchatski TimeAsiaUTC +12
PGTPapua New Guinea TimePacificUTC +10
PHOTPhoenix Island TimePacificUTC +13
PHTPhilippine TimeAsiaUTC +8
PSTPhilippine Standard TimeAsiaUTC +8
PKTPakistan Standard TimeAsiaUTC +5
PKTPakistan TimeAsiaUTC +5
PMDTPierre & Miquelon Daylight TimeNorth AmericaUTC -2
PMSTPierre & Miquelon Standard TimeNorth AmericaUTC -3
PONTPohnpei Standard TimePacificUTC +11
PSTPacific Standard TimeNorth AmericaUTC -8
PTPacific TimeNorth AmericaUTC -8
NAPSTNorth American Pacific Standard TimeNorth AmericaUTC -8
PTTiempo del Pacífico (Spanish)North AmericaUTC -8
HNPHeure Normale du Pacifique (French)North AmericaUTC -8
PSTPitcairn Standard TimePacificUTC -8
PTPacific TimeNorth AmericaUTC -8:00 / -7:00
PWTPalau TimePacificUTC +9
PYSTParaguay Summer TimeSouth AmericaUTC -3
PYTParaguay TimeSouth AmericaUTC -4
PYTPyongyang TimeAsiaUTC +8:30
PYSTPyongyang Standard TimeAsiaUTC +8:30
QYZTQyzylorda TimeAsiaUTC +6
RETReunion TimeAfricaUTC +4
ROTTRothera TimeAntarcticaUTC -3
SAKTSakhalin TimeAsiaUTC +11
SAMTSamara TimeEuropeUTC +4
SAMTSamara Standard TimeEuropeUTC +4
SASTSouth Africa Standard TimeAfricaUTC +2
SASTSouth African Standard TimeAfricaUTC +2
SBTSolomon Islands TimePacificUTC +11
SBTSolomon Island TimePacificUTC +11
SCTSeychelles TimeAfricaUTC +4
SGTSingapore TimeAsiaUTC +8
SSTSingapore Standard TimeAsiaUTC +8
SRETSrednekolymsk TimeAsiaUTC +11
SRTSuriname TimeSouth AmericaUTC -3
SSTSamoa Standard TimePacificUTC -11
SYOTSyowa TimeAntarcticaUTC +3
TAHTTahiti TimePacificUTC -10
TFTFrench Southern and Antarctic TimeIndian OceanUTC +5
KITKerguelen (Islands) TimeIndian OceanUTC +5
TJTTajikistan TimeAsiaUTC +5
TKTTokelau TimePacificUTC +13
TLTEast Timor TimeAsiaUTC +9
TMTTurkmenistan TimeAsiaUTC +5
TOSTTonga Summer TimePacificUTC +14
TOTTonga TimePacificUTC +13
TRTTurkey TimeAsia, EuropeUTC +3
TVTTuvalu TimePacificUTC +12
ULASTUlaanbaatar Summer TimeAsiaUTC +9
ULASTUlan Bator Summer TimeAsiaUTC +9
ULATUlaanbaatar TimeAsiaUTC +8
ULATUlan Bator TimeAsiaUTC +8
UYSTUruguay Summer TimeSouth AmericaUTC -2
UYTUruguay TimeSouth AmericaUTC -3
UZTUzbekistan TimeAsiaUTC +5
VETVenezuelan Standard TimeSouth AmericaUTC -4
HLVHora Legal de Venezuela (Spanish)South AmericaUTC -4
VLASTVladivostok Summer TimeAsiaUTC +11
VLATVladivostok TimeAsiaUTC +10
VOSTVostok TimeAntarcticaUTC +6
VUTVanuatu TimePacificUTC +11
EFATEEfate TimePacificUTC +11
WAKTWake TimePacificUTC +12
WARSTWestern Argentine Summer TimeSouth AmericaUTC -3
WASTWest Africa Summer TimeAfricaUTC +2
WATWest Africa TimeAfricaUTC +1
WESTWestern European Summer TimeEurope, AfricaUTC +1
WEDTWestern European Daylight TimeEurope, AfricaUTC +1
WESZWesteuropäische Sommerzeit (German)Europe, AfricaUTC +1
WETWestern European TimeEurope, AfricaUTC +0
GMTGreenwich Mean TimeEurope, AfricaUTC +0
WEZWesteuropäische Zeit (German)Europe, AfricaUTC +0
WFTWallis and Futuna TimePacificUTC +12
WGSTWestern Greenland Summer TimeNorth AmericaUTC -2
WGSTWest Greenland Summer TimeNorth AmericaUTC -2
WGTWest Greenland TimeNorth AmericaUTC -3
WGTWestern Greenland TimeNorth AmericaUTC -3
WIBWestern Indonesian TimeAsiaUTC +7
WIBWaktu Indonesia BaratAsiaUTC +7
WITEastern Indonesian TimeAsiaUTC +9
WITWaktu Indonesia TimurAsiaUTC +9
WITACentral Indonesian TimeAsiaUTC +8
WITAWaktu Indonesia TengahAsiaUTC +8
WSTWest Samoa TimePacificUTC +13
STSamoa TimePacificUTC +13
WSTWestern Sahara Summer TimeAfricaUTC +1
WTWestern Sahara Standard TimeAfricaUTC +0
WTWestern Sahara TimeAfricaUTC +0
YAKSTYakutsk Summer TimeAsiaUTC +10
YAKTYakutsk TimeAsiaUTC +9
YAPTYap TimePacificUTC +10
YEKSTYekaterinburg Summer TimeAsiaUTC +6
YEKTYekaterinburg TimeAsiaUTC +5