Time zones list | Name & abbreviations

Although initially our world was divided into 24 standard time zones, there are much more of them. Due to a lot of geographical, social and political reasons they often deviate from the universal standards and recommendations which set by international institutions. That is why the list of time zones worldwide includes much more than 24 names and abbreviations.

Abbreviations for time zones

Names of the time zones are usually accompanied by time zone abbreviations and require decryptions. For convenience, we have combined them into one table. You can see the list of time zones by name below:

Abbreviation Time Zone Name Locations UTC
ACDT Australian Central Daylight Time Australia UTC +10:30
CDT Central Daylight Time
CDST Central Daylight Savings Time
ACST Australian Central Standard Time Australia UTC +9:30
CST Central Standard Time
ACT Acre Time South America UTC -5
ACT Australian Central Time Australia UTC +9:30 / +10:30
ACWST Australian Central Western Standard Time Australia UTC +8:45
ADT Arabia Daylight Time Asia UTC +4
AST Arabia Summer Time
ADT Atlantic Daylight Time North America UTC -3
ADST Atlantic Daylight Saving Time Atlantic
AST Atlantic Summer Time
HAA Heure Avancée de l’Atlantique (French)
AEDT Australian Eastern Daylight Time Australia UTC +11
EDT Eastern Daylight Time
EDST Eastern Daylight Saving Time
AEST Australian Eastern Standard Time Australia UTC +10
EST Eastern Standard Time
AET Australian Eastern Time
AET Australian Eastern Time Australia UTC +10:00 / +11:00
AFT Afghanistan Time Asia UTC +4:30
AKDT Alaska Daylight Time North America UTC -8
ADST Alaska Daylight Saving Time
AKST Alaska Standard Time North America UTC -9
AT Alaska Time
ALMT Alma-Ata Time Asia UTC +6
AMST Amazon Summer Time South America UTC -3
AMST Armenia Summer Time Asia UTC +5
AMDT Armenia Daylight Time
AMT Amazon Time South America UTC -4
AMT Armenia Time Asia UTC +4
ANAST Anadyr Summer Time Asia UTC +12
ANAT Anadyr Time Asia UTC +12
AQTT Aqtobe Time Asia UTC +5
ART Argentina Time Antarctica UTC -3
South America
AST Arabia Standard Time Asia UTC +3
AST Arabic Standard Time
AST Al Manamah Standard Time
AST Atlantic Standard Time North America UTC -4
AT Atlantic Time Atlantic
AST Tiempo Estándar del Atlántico (Spanish) Caribbean
HNA Heure Normale de l’Atlantique (French)
AT Atlantic Time North America UTC -4:00 / -3:00
AWDT Australian Western Daylight Time Australia UTC +9
WDT Western Daylight Time
WST Western Summer Time
AWST Australian Western Standard Time Australia UTC +8
WST Western Standard Time
WAT Western Australia Time
AZOST Azores Summer Time Atlantic UTC +0
AZODT Azores Daylight Time
AZOT Azores Time Atlantic UTC -1
AZOST Azores Standard Time
AZST Azerbaijan Summer Time Asia UTC +5
AZT Azerbaijan Time Asia UTC +4
AoE Anywhere on Earth Pacific UTC -12
BNT Brunei Darussalam Time Asia UTC +8
BDT Brunei Time
BOT Bolivia Time South America UTC -4
BRST Brasília Summer Time South America UTC -2
BST Brazil Summer Time
BST Brazilian Summer Time
BRT Brasília Time South America UTC -3
BT Brazil Time
BT Brazilian Time
BST Bangladesh Standard Time Asia UTC +6
BST Bougainville Standard Time Pacific UTC +11
BST British Summer Time Europe UTC +1
BDT British Daylight Time
BDST British Daylight Saving Time
BTT Bhutan Time Asia UTC +6
CAST Casey Time Antarctica UTC +8
CAT Central Africa Time Africa UTC +2
CCT Cocos Islands Time Indian Ocean UTC +6:30
CDT Central Daylight Time North America UTC -5
CDST Central Daylight Saving Time
NACDT North American Central Daylight Time
HAC Heure Avancée du Centre (French)
CDT Cuba Daylight Time Caribbean UTC -4
CEST Central European Summer Time Europe UTC +2
CEDT Central European Daylight Time Antarctica
ECST European Central Summer Time
MESZ Mitteleuropäische Sommerzeit (German)
CET Central European Time Europe UTC +1
CIT Central Indonesia Time Indonesia UTC +8
ECT European Central Time Africa
EIT Eastern Indonesia Time Indonesia UTC +9
MEZ Mitteleuropäische Zeit (German)
CHADT Chatham Island Daylight Time Pacific UTC +13:45
CDT Chatham Daylight Time
CHAST Chatham Island Standard Time Pacific UTC +12:45
CHOST Choibalsan Summer Time Asia UTC +9
CHODT Choibalsan Daylight Time
CHODST Choibalsan Daylight Saving Time
CHOT Choibalsan Time Asia UTC +8
CHUT Chuuk Time Pacific UTC +10
CIDST Cayman Islands Daylight Saving Time Caribbean UTC -4
CIST Cayman Islands Standard Time Caribbean UTC -5
CIT Cayman Islands Time
CKT Cook Island Time Pacific UTC -10
CLST Chile Summer Time South America UTC -3
CLDT Chile Daylight Time Antarctica
CLT Chile Standard Time South America UTC -4
CT Chile Time Antarctica
CLST Chile Standard Time
COT Colombia Time South America UTC -5
CST Central Standard Time North America UTC -6
CT Central Time Central America
NACST North American Central Standard Time
CST Tiempo Central Estándar (Spanish)
HNC Heure Normale du Centre (French)
CST China Standard Time Asia UTC +8
CST Cuba Standard Time Caribbean UTC -5
CT Central Time North America UTC -6:00 / -5:00
CVT Cape Verde Time Africa UTC -1
CXT Christmas Island Time Australia UTC +7
ChST Chamorro Standard Time Pacific UTC +10
GST Guam Standard Time
DAVT Davis Time Antarctica UTC +7
DDUT Dumont-d’Urville Time Antarctica UTC +10
EASST Easter Island Summer Time Pacific UTC -5
EADT Easter Island Daylight Time
EAST Easter Island Standard Time Pacific UTC -6
EAT Eastern Africa Time Africa UTC +3
EAT East Africa Time Indian Ocean
ECT Ecuador Time South America UTC -5
EDT Eastern Daylight Time North America UTC -4
EDST Eastern Daylight Savings Time Caribbean
NAEDT North American Eastern Daylight Time
HAE Heure Avancée de l’Est (French)
EDT Tiempo de verano del Este (Spanish)
EEST Eastern European Summer Time Europe UTC +3
EEDT Eastern European Daylight Time Asia
OESZ Osteuropäische Sommerzeit (German)
EET Eastern European Time Europe UTC +2
OEZ Osteuropäische Zeit (German) Asia
EGST Eastern Greenland Summer Time North America UTC +0
EGST East Greenland Summer Time
EGT East Greenland Time North America UTC -1
EGT Eastern Greenland Time
EST Eastern Standard Time North America UTC -5
ET Eastern Time Caribbean
NAEST North American Eastern Standard Time Central America
ET Tiempo del Este (Spanish)
HNE Heure Normale de l’Est (French)
ET Eastern Time North America UTC -5:00 / -4:00
FET Further-Eastern European Time Europe UTC +3
FJST Fiji Summer Time Pacific UTC +13
FJDT Fiji Daylight Time
FJT Fiji Time Pacific UTC +12
FKST Falkland Islands Summer Time South America UTC -3
FKDT Falkland Island Daylight Time
FKT Falkland Island Time South America UTC -4
FKST Falkland Island Standard Time
FNT Fernando de Noronha Time South America UTC -2
GALT Galapagos Time Pacific UTC -6
GAMT Gambier Time Pacific UTC -9
GAMT Gambier Islands Time
GET Georgia Standard Time Asia UTC +4
GFT French Guiana Time South America UTC -3
GILT Gilbert Island Time Pacific UTC +12
GMT Greenwich Mean Time Europe UTC +0
UTC Coordinated Universal Time Africa
GT Greenwich Time North America
GST Gulf Standard Time Asia UTC +4
GST South Georgia Time South America UTC -2
GYT Guyana Time South America UTC -4
HDT Hawaii-Aleutian Daylight Time North America UTC -9
HADT Hawaii Daylight Time
HKT Hong Kong Time Asia UTC +8
HOVST Hovd Summer Time Asia UTC +8
HOVDT Hovd Daylight Time
HOVDST Hovd Daylight Saving Time
HOVT Hovd Time Asia UTC +7
HST Hawaii Standard Time North America UTC -10
HAST Hawaii-Aleutian Standard Time Pacific
ICT Indochina Time Asia UTC +7
IDT Israel Daylight Time Asia UTC +3
IOT Indian Chagos Time Indian Ocean UTC +6
IRDT Iran Daylight Time Asia UTC +4:30
IRST Iran Summer Time
IDT Iran Daylight Time
IRKST Irkutsk Summer Time Asia UTC +9
IRKT Irkutsk Time Asia UTC +8
IRST Iran Standard Time Asia UTC +3:30
IT Iran Time
IST India Standard Time Asia UTC +5:30
IT India Time
IST Indian Standard Time
IST Irish Standard Time Europe UTC +1
IST Irish Summer Time
IST Israel Standard Time Asia UTC +2
JST Japan Standard Time Asia UTC +9
KGT Kyrgyzstan Time Asia UTC +6
KOST Kosrae Time Pacific UTC +11
KRAST Krasnoyarsk Summer Time Asia UTC +8
KRAT Krasnoyarsk Time Asia UTC +7
KST Korea Standard Time Asia UTC +9
KST Korean Standard Time
KT Korea Time
KUYT Kuybyshev Time Europe UTC +4
SAMST Samara Summer Time
LHDT Lord Howe Daylight Time Australia UTC +11
LHST Lord Howe Standard Time Australia UTC +10:30
LINT Line Islands Time Pacific UTC +14
MAGST Magadan Summer Time Asia UTC +12
MAGST Magadan Island Summer Time
MAGT Magadan Time Asia UTC +11
MAGT Magadan Island Time
MART Marquesas Time Pacific UTC -9:30
MAWT Mawson Time Antarctica UTC +5
MDT Mountain Daylight Time North America UTC -6
MDST Mountain Daylight Saving Time
NAMDT North American Mountain Daylight Time
HAR Heure Avancée des Rocheuses (French)
MHT Marshall Islands Time Pacific UTC +12
MMT Myanmar Time Asia UTC +6:30
MSD Moscow Daylight Time Europe UTC +4
Moscow Summer Time
MSK Moscow Standard Time Europe UTC +3
MCK Moscow Time Asia
MST Mountain Standard Time North America UTC -7
MT Mountain Time
NAMST North American Mountain Standard Time
HNR Heure Normale des Rocheuses (French)
MT Mountain Time North America UTC -7:00 / -6:00
MUT Mauritius Time Africa UTC +4
MVT Maldives Time Asia UTC +5
MYT Malaysia Time Asia UTC +8
MST Malaysian Standard Time
NCT New Caledonia Time Pacific UTC +11
NDT Newfoundland Daylight Time North America UTC -2:30
HAT Heure Avancée de Terre-Neuve (French)
NFDT Norfolk Daylight Time Australia UTC +12
NFDT Norfolk Island Daylight Time
NFT Norfolk Time Australia UTC +11
NFT Norfolk Island Time
NOVST Novosibirsk Summer Time Asia UTC +7
OMSST Omsk Summer Time
NOVT Novosibirsk Time Asia UTC +7
OMST Omsk Standard Time
NPT Nepal Time Asia UTC +5:45
NRT Nauru Time Pacific UTC +12
NST Newfoundland Standard Time North America UTC -3:30
HNT Heure Normale de Terre-Neuve (French)
NUT Niue Time Pacific UTC -11
NZDT New Zealand Daylight Time Pacific UTC +13
NZST New Zealand Standard Time Pacific UTC +12
OMSST Omsk Summer Time Asia UTC +7
NOVST Novosibirsk Summer Time
OMST Omsk Standard Time Asia UTC +6
OMST Omsk Time
NOVT Novosibirsk Time
ORAT Oral Time Asia UTC +5
PDT Pacific Daylight Time North America UTC -7
PDST Pacific Daylight Saving Time
NAPDT North American Pacific Daylight Time
HAP Heure Avancée du Pacifique (French)
PET Peru Time South America UTC -5
PETST Kamchatka Summer Time Asia UTC +12
PETT Kamchatka Time Asia UTC +12
PETT Petropavlovsk-Kamchatski Time
PGT Papua New Guinea Time Pacific UTC +10
PHOT Phoenix Island Time Pacific UTC +13
PHT Philippine Time Asia UTC +8
PST Philippine Standard Time
PKT Pakistan Standard Time Asia UTC +5
PKT Pakistan Time
PMDT Pierre & Miquelon Daylight Time North America UTC -2
PMST Pierre & Miquelon Standard Time North America UTC -3
PONT Pohnpei Standard Time Pacific UTC +11
PST Pacific Standard Time North America UTC -8
PT Pacific Time
NAPST North American Pacific Standard Time
PT Tiempo del Pacífico (Spanish)
HNP Heure Normale du Pacifique (French)
PST Pitcairn Standard Time Pacific UTC -8
PT Pacific Time North America UTC -8:00 / -7:00
PWT Palau Time Pacific UTC +9
PYST Paraguay Summer Time South America UTC -3
PYT Paraguay Time South America UTC -4
PYT Pyongyang Time Asia UTC +8:30
PYST Pyongyang Standard Time
QYZT Qyzylorda Time Asia UTC +6
RET Reunion Time Africa UTC +4
ROTT Rothera Time Antarctica UTC -3
SAKT Sakhalin Time Asia UTC +11
SAMT Samara Time Europe UTC +4
SAMT Samara Standard Time
SAST South Africa Standard Time Africa UTC +2
SAST South African Standard Time
SBT Solomon Islands Time Pacific UTC +11
SBT Solomon Island Time
SCT Seychelles Time Africa UTC +4
SGT Singapore Time Asia UTC +8
SST Singapore Standard Time
SRET Srednekolymsk Time Asia UTC +11
SRT Suriname Time South America UTC -3
SST Samoa Standard Time Pacific UTC -11
SYOT Syowa Time Antarctica UTC +3
TAHT Tahiti Time Pacific UTC -10
TFT French Southern and Antarctic Time Indian Ocean UTC +5
KIT Kerguelen (Islands) Time
TJT Tajikistan Time Asia UTC +5
TKT Tokelau Time Pacific UTC +13
TLT East Timor Time Asia UTC +9
TMT Turkmenistan Time Asia UTC +5
TOST Tonga Summer Time Pacific UTC +14
TOT Tonga Time Pacific UTC +13
TRT Turkey Time Asia UTC +3
TVT Tuvalu Time Pacific UTC +12
ULAST Ulaanbaatar Summer Time Asia UTC +9
ULAST Ulan Bator Summer Time
ULAT Ulaanbaatar Time Asia UTC +8
ULAT Ulan Bator Time
UTC Coordinated Universal Time Worldwide UTC
UYST Uruguay Summer Time South America UTC -2
UYT Uruguay Time South America UTC -3
UZT Uzbekistan Time Asia UTC +5
VET Venezuelan Standard Time South America UTC -4
HLV Hora Legal de Venezuela (Spanish)
VLAST Vladivostok Summer Time Asia UTC +11
VLAT Vladivostok Time Asia UTC +10
VOST Vostok Time Antarctica UTC +6
VUT Vanuatu Time Pacific UTC +11
EFATE Efate Time
WAKT Wake Time Pacific UTC +12
WARST Western Argentine Summer Time South America UTC -3
WAST West Africa Summer Time Africa UTC +2
WAT West Africa Time Africa UTC +1
WEST Western European Summer Time Europe UTC +1
WEDT Western European Daylight Time Africa
WESZ Westeuropäische Sommerzeit (German)
WET Western European Time Europe UTC +0
GMT Greenwich Mean Time Africa
WEZ Westeuropäische Zeit (German)
WFT Wallis and Futuna Time Pacific UTC +12
WGST Western Greenland Summer Time North America UTC -2
WGST West Greenland Summer Time
WGT West Greenland Time North America UTC -3
WGT Western Greenland Time
WIB Western Indonesian Time Asia UTC +7
WIB Waktu Indonesia Barat
WIT Eastern Indonesian Time Asia UTC +9
WIT Waktu Indonesia Timur
WITA Central Indonesian Time Asia UTC +8
WITA Waktu Indonesia Tengah
WST West Samoa Time Pacific UTC +13
WSDT West Samoa Daylight TimeDST of West Samoa Time Pacific UTC +14
SLT Sri Lanka Time Sri Lanka +5:30
ST Samoa Time
WST Western Sahara Summer Time Africa UTC +1
WT Western Sahara Standard Time Africa UTC +0
WT Western Sahara Time
XJT Xinjiang Time Asia UTC +6
YAKST Yakutsk Summer Time Asia UTC +10
YAKT Yakutsk Time Asia UTC +9
YAPT Yap Time Pacific UTC +10
YEKST Yekaterinburg Summer Time Asia UTC +6
YEKT Yekaterinburg Time Asia UTC +5

How many time zones are there in the world?

It is hard to give an exact number of time zones names. The traditional approach to classifying time zones involves the division of the earth by 24 of time zones. Most worldwide timezones really differ from each other by exactly one hour. By convention, their local time is calculated as an offset from UTC or GMT. At the same time, in many countries and cities, these offsets change twice a year due to the transition to daylight saving time (named summer time in some countries).

The exception of such an approach is those countries which also need to reflect inner processes within the regions. For example:

  1. Some countries have colonial past. For this reason despite the fact that their territories are many miles from the control center, they use the same time zone while their time zones abbreviations and names are different.
  2. Some countries have large territories, so that several time zones are used at once (like time zones in the United States of America, Russia and others) or the only one like in China.

As a result, there are many more than 24 time zones in the world. Every country may have a particular standard time zone with its specific name and abbreviation (time zone code).

What is the name of time zones needed for?

Different names and abbreviations are useful for identifying a particular country or location. For this reason, different time zone codes are used in different countries even if they belong to the same time zone.

Time zones list shows the diversity of their name and designations. Time zone abbreviation often consists of several letters, which mean:

  • the name of country or location — first letters;
  • standard/daylight saving/some else specific time;
  • “t” — abbreviation for word “time”.

Anyway decoding of all abbreviations for time zones is listed above. For convenience, the list of timezones by country is sorted alphabetically.

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