List of time zone abbreviations

Time zones are often represented by alphabetic abbreviations such as "EST", "WST", and "CST", 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 (North American) Central Standard Time (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.

Abbr.NameUTC offset
ACDTAustralian Central Daylight Saving TimeUTC+10:30
ACSTAustralian Central Standard TimeUTC+09:30
ACTAcre TimeUTC−05
ACTASEAN Common Time (unofficial)UTC+06:30 – UTC+09
ACWSTAustralian Central Western Standard Time (unofficial)UTC+08:45
ADTAtlantic Daylight TimeUTC−03
AEDTAustralian Eastern Daylight Saving TimeUTC+11
AESTAustralian Eastern Standard TimeUTC+10
AETAustralian Eastern TimeUTC+10/UTC+11
AFTAfghanistan TimeUTC+04:30
AKDTAlaska Daylight TimeUTC−08
AKSTAlaska Standard TimeUTC−09
ALMT Alma-Ata Time[1] UTC+06
AMSTAmazon Summer Time (Brazil)[2]UTC−03
AMTAmazon Time (Brazil)[3]UTC−04
AMTArmenia TimeUTC+04
ANAT Anadyr Time[4] UTC+12
AQTT Aqtobe Time[5] UTC+05
ARTArgentina TimeUTC−03
ASTArabia Standard TimeUTC+03
ASTAtlantic Standard TimeUTC−04
AWSTAustralian Western Standard TimeUTC+08
AZOSTAzores Summer TimeUTC±00
AZOTAzores Standard TimeUTC−01
AZTAzerbaijan TimeUTC+04
BNTBrunei TimeUTC+08
BIOTBritish Indian Ocean TimeUTC+06
BITBaker Island TimeUTC−12
BOTBolivia TimeUTC−04
BRSTBrasília Summer TimeUTC−02
BRTBrasília TimeUTC−03
BSTBangladesh Standard TimeUTC+06
BSTBougainville Standard Time[6]UTC+11
BSTBritish Summer Time (British Standard Time from Feb 1968 to Oct 1971)UTC+01
BTTBhutan TimeUTC+06
CATCentral Africa TimeUTC+02
CCTCocos Islands TimeUTC+06:30
CDTCentral Daylight Time (North America)UTC−05
CDTCuba Daylight Time[7]UTC−04
CESTCentral European Summer Time (Cf. HAEC)UTC+02
CETCentral European TimeUTC+01
CHADTChatham Daylight TimeUTC+13:45
CHASTChatham Standard TimeUTC+12:45
CHOTChoibalsan Standard TimeUTC+08
CHOSTChoibalsan Summer TimeUTC+09
CHSTChamorro Standard TimeUTC+10
CHUTChuuk TimeUTC+10
CISTClipperton Island Standard TimeUTC−08
WITACentral Indonesia TimeUTC+08
CKTCook Island TimeUTC−10
CLSTChile Summer TimeUTC−03
CLTChile Standard TimeUTC−04
COSTColombia Summer TimeUTC−04
COTColombia TimeUTC−05
CSTCentral Standard Time (North America)UTC−06
CSTChina Standard TimeUTC+08
CSTCuba Standard TimeUTC−05
CTCentral TimeUTC−06/UTC−05
CVTCape Verde TimeUTC−01
CWSTCentral Western Standard Time (Australia) unofficialUTC+08:45
CXTChristmas Island TimeUTC+07
DAVTDavis TimeUTC+07
DDUTDumont d'Urville TimeUTC+10
DFTAIX-specific equivalent of Central European Time[NB 1]UTC+01
EASSTEaster Island Summer TimeUTC−05
EASTEaster Island Standard TimeUTC−06
EATEast Africa TimeUTC+03
ECTEastern Caribbean Time (does not recognise DST)UTC−04
ECTEcuador TimeUTC−05
EDTEastern Daylight Time (North America)UTC−04
EESTEastern European Summer TimeUTC+03
EETEastern European TimeUTC+02
EGSTEastern Greenland Summer TimeUTC±00
EGTEastern Greenland TimeUTC−01
WITEastern Indonesian TimeUTC+09
ESTEastern Standard Time (North America)UTC−05
FETFurther-eastern European TimeUTC+03
FJTFiji TimeUTC+12
FKSTFalkland Islands Summer TimeUTC−03
FKTFalkland Islands TimeUTC−04
FNTFernando de Noronha TimeUTC−02
GALTGalápagos TimeUTC−06
GAMTGambier Islands TimeUTC−09
GETGeorgia Standard TimeUTC+04
GFTFrench Guiana TimeUTC−03
GILTGilbert Island TimeUTC+12
GITGambier Island TimeUTC−09
GMTGreenwich Mean TimeUTC±00
GSTSouth Georgia and the South Sandwich Islands TimeUTC−02
GSTGulf Standard TimeUTC+04
GYTGuyana TimeUTC−04
HDTHawaii–Aleutian Daylight TimeUTC−09
HAECHeure Avancée d'Europe Centrale French-language name for CESTUTC+02
HSTHawaii–Aleutian Standard TimeUTC−10
HKTHong Kong TimeUTC+08
HMTHeard and McDonald Islands TimeUTC+05
HOVSTHovd Summer Time (not used from 2017-present)UTC+08
HOVTHovd TimeUTC+07
ICTIndochina TimeUTC+07
IDLWInternational Day Line West time zoneUTC−12
IDTIsrael Daylight TimeUTC+03
IOTIndian Ocean TimeUTC+03
IRDTIran Daylight TimeUTC+04:30
IRKTIrkutsk TimeUTC+08
IRSTIran Standard TimeUTC+03:30
ISTIndian Standard TimeUTC+05:30
ISTIrish Standard Time[8]UTC+01
ISTIsrael Standard TimeUTC+02
JSTJapan Standard TimeUTC+09
KALTKaliningrad TimeUTC+02
KGTKyrgyzstan TimeUTC+06
KOSTKosrae TimeUTC+11
KRATKrasnoyarsk TimeUTC+07
KSTKorea Standard TimeUTC+09
LHSTLord Howe Standard TimeUTC+10:30
LHSTLord Howe Summer TimeUTC+11
LINTLine Islands TimeUTC+14
MAGTMagadan TimeUTC+12
MARTMarquesas Islands TimeUTC−09:30
MAWTMawson Station TimeUTC+05
MDTMountain Daylight Time (North America)UTC−06
METMiddle European Time Same zone as CETUTC+01
MESTMiddle European Summer Time Same zone as CESTUTC+02
MHTMarshall Islands TimeUTC+12
MISTMacquarie Island Station TimeUTC+11
MITMarquesas Islands TimeUTC−09:30
MMTMyanmar Standard TimeUTC+06:30
MSKMoscow TimeUTC+03
MSTMalaysia Standard TimeUTC+08
MSTMountain Standard Time (North America)UTC−07
MUTMauritius TimeUTC+04
MVTMaldives TimeUTC+05
MYTMalaysia TimeUTC+08
NCTNew Caledonia TimeUTC+11
NDTNewfoundland Daylight TimeUTC−02:30
NFTNorfolk Island TimeUTC+11
NOVT Novosibirsk Time [9] UTC+07
NPTNepal TimeUTC+05:45
NSTNewfoundland Standard TimeUTC−03:30
NTNewfoundland TimeUTC−03:30
NUTNiue TimeUTC−11
NZDTNew Zealand Daylight TimeUTC+13
NZSTNew Zealand Standard TimeUTC+12
OMSTOmsk TimeUTC+06
ORATOral TimeUTC+05
PDTPacific Daylight Time (North America)UTC−07
PETPeru TimeUTC−05
PETTKamchatka TimeUTC+12
PGTPapua New Guinea TimeUTC+10
PHOTPhoenix Island TimeUTC+13
PHTPhilippine TimeUTC+08
PKTPakistan Standard TimeUTC+05
PMDTSaint Pierre and Miquelon Daylight TimeUTC−02
PMSTSaint Pierre and Miquelon Standard TimeUTC−03
PONTPohnpei Standard TimeUTC+11
PSTPacific Standard Time (North America)UTC−08
PSTPhilippine Standard TimeUTC+08
PWTPalau Time[10]UTC+09
PYSTParaguay Summer Time[11]UTC−03
PYTParaguay Time[12]UTC−04
RETRéunion TimeUTC+04
ROTTRothera Research Station TimeUTC−03
SAKTSakhalin Island TimeUTC+11
SAMTSamara TimeUTC+04
SASTSouth African Standard TimeUTC+02
SBTSolomon Islands TimeUTC+11
SCTSeychelles TimeUTC+04
SDTSamoa Daylight TimeUTC−10
SGTSingapore TimeUTC+08
SLSTSri Lanka Standard TimeUTC+05:30
SRETSrednekolymsk TimeUTC+11
SRTSuriname TimeUTC−03
SSTSamoa Standard TimeUTC−11
SSTSingapore Standard TimeUTC+08
SYOTShowa Station TimeUTC+03
TAHTTahiti TimeUTC−10
THAThailand Standard TimeUTC+07
TFTFrench Southern and Antarctic Time[13]UTC+05
TJTTajikistan TimeUTC+05
TKTTokelau TimeUTC+13
TLTTimor Leste TimeUTC+09
TMTTurkmenistan TimeUTC+05
TRTTurkey TimeUTC+03
TOTTonga TimeUTC+13
TVTTuvalu TimeUTC+12
ULASTUlaanbaatar Summer TimeUTC+09
ULATUlaanbaatar Standard TimeUTC+08
UTCCoordinated Universal TimeUTC±00
UYSTUruguay Summer TimeUTC−02
UYTUruguay Standard TimeUTC−03
UZTUzbekistan TimeUTC+05
VETVenezuelan Standard TimeUTC−04
VLATVladivostok TimeUTC+10
VOLTVolgograd TimeUTC+04
VOSTVostok Station TimeUTC+06
VUTVanuatu TimeUTC+11
WAKTWake Island TimeUTC+12
WASTWest Africa Summer TimeUTC+02
WATWest Africa TimeUTC+01
WESTWestern European Summer TimeUTC+01
WETWestern European TimeUTC±00
WIBWestern Indonesian TimeUTC+07
WGSTWest Greenland Summer Time[14]UTC−02
WGTWest Greenland Time[15]UTC−03
WSTWestern Standard TimeUTC+08
YAKTYakutsk TimeUTC+09
YEKTYekaterinburg TimeUTC+05
Source:[16]

This is a list of time zone abbreviations.

See also

References
  1. "ALMT – Alma-Ata Time (Time Zone Abbreviation)". www.timeanddate.com. Retrieved 2019-03-04.
  2. "AMST – Amazon Summer Time". Time and Date AS. Retrieved 2013-08-18.
  3. "AMT – Amazon Time". Time and Date AS. Retrieved 2013-08-18.
  4. "ANAT – Anadyr Time (Time Zone Abbreviation)". www.timeanddate.com. Retrieved 2019-03-03.
  5. "AQTT – Aqtobe Time (Time Zone Abbreviation)". www.timeanddate.com. Retrieved 2019-03-04.
  6. "Time Change in Papua New Guinea, 28 December 2014". TimeandDate.com. Retrieved 27 April 2015.
  7. "CDT – Cuba Daylight Time". Time and Date AS. Retrieved 2012-10-28.
  8. Book (eISB), electronic Irish Statute. "electronic Irish Statute Book (eISB)". www.irishstatutebook.ie.
  9. "NOVT – Novosibirsk Time (Time Zone Abbreviation)". www.timeanddate.com. Retrieved 2019-03-04.
  10. "PWT – Palau Time (Standard Time)". Time and Date AS. Retrieved 2021-01-26.
  11. "PYST – Paraguay Summer Time". Time and Date AS. Retrieved 2013-08-18.
  12. "PYT – Paraguay Time". Time and Date AS. Retrieved 2013-08-18.
  13. "TFT – French Southern and Antarctic Time (Time Zone Abbreviation)". www.timeanddate.com. Retrieved 2019-01-02.
  14. "WGST – West Greenland Summer Time (Time Zone Abbreviation)". www.timeanddate.com. Retrieved 2019-02-07.
  15. "WGT – West Greenland Time (Time Zone Abbreviation)". www.timeanddate.com. Retrieved 2019-02-07.
  16. "Time Zone Abbreviations - Worldwide List". timeanddate.com. Retrieved 2021-01-08.

Notes
  1. AIX OS uses this abbreviation as an equivalent of CET
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