Guides

Time zones and abbreviations

Look up the IANA time zone for a city, or check what an abbreviation such as EST, CET, or IST really means, when it is in use, and how it converts.

Common time zone abbreviations

Each page shows the live time at that offset, where and when it is used this year, and an hour-by-hour conversion table.

UTCCoordinated Universal TimeUTC+0GMTGreenwich Mean TimeUTC+0BSTBritish Summer TimeUTC+1CETCentral European TimeUTC+1CESTCentral European Summer TimeUTC+2ESTEastern Standard TimeUTC−5EDTEastern Daylight TimeUTC−4CSTCentral Standard Time (North America)UTC−6CDTCentral Daylight TimeUTC−5MSTMountain Standard TimeUTC−7PSTPacific Standard TimeUTC−8PDTPacific Daylight TimeUTC−7ISTIndia Standard TimeUTC+5:30JSTJapan Standard TimeUTC+9SGTSingapore TimeUTC+8GSTGulf Standard TimeUTC+4AESTAustralian Eastern Standard TimeUTC+10AEDTAustralian Eastern Daylight TimeUTC+11

Time zones by country

How many zones each country uses, daylight saving dates, and upcoming national holidays.

Browse countries →

UTC offsets

Every offset in use this year, from UTC−11 to UTC+14, and the places on each.

Browse offsets →

City time zone directory

EST, PST, IST? Start here
CityCountryRegionIANA time zone
AdelaideAustraliaOceaniaAustralia/Adelaide
AmsterdamNetherlandsEuropeEurope/Amsterdam
AucklandNew ZealandOceaniaPacific/Auckland
BangkokThailandAsiaAsia/Bangkok
BeijingChinaAsiaAsia/Shanghai
BerlinGermanyEuropeEurope/Berlin
BogotáColombiaAmericasAmerica/Bogota
BrisbaneAustraliaOceaniaAustralia/Brisbane
Buenos AiresArgentinaAmericasAmerica/Argentina/Buenos_Aires
CairoEgyptAfricaAfrica/Cairo
CasablancaMoroccoAfricaAfrica/Casablanca
Chatham IslandsNew ZealandOceaniaPacific/Chatham
ChicagoUnited StatesAmericasAmerica/Chicago
DenverUnited StatesAmericasAmerica/Denver
DhakaBangladeshAsiaAsia/Dhaka
DubaiUnited Arab EmiratesAsiaAsia/Dubai
DublinIrelandEuropeEurope/Dublin
Hong KongChinaAsiaAsia/Hong_Kong
HonoluluUnited StatesOceaniaPacific/Honolulu
IstanbulTürkiyeEuropeEurope/Istanbul
JakartaIndonesiaAsiaAsia/Jakarta
JohannesburgSouth AfricaAfricaAfrica/Johannesburg
KarachiPakistanAsiaAsia/Karachi
KathmanduNepalAsiaAsia/Kathmandu
Kuala LumpurMalaysiaAsiaAsia/Kuala_Lumpur
LagosNigeriaAfricaAfrica/Lagos
LisbonPortugalEuropeEurope/Lisbon
LondonUnited KingdomEuropeEurope/London
Los AngelesUnited StatesAmericasAmerica/Los_Angeles
MadridSpainEuropeEurope/Madrid
ManilaPhilippinesAsiaAsia/Manila
MelbourneAustraliaOceaniaAustralia/Melbourne
Mexico CityMexicoAmericasAmerica/Mexico_City
MoscowRussiaEuropeEurope/Moscow
MumbaiIndiaAsiaAsia/Kolkata
NairobiKenyaAfricaAfrica/Nairobi
New DelhiIndiaAsiaAsia/Kolkata
New YorkUnited StatesAmericasAmerica/New_York
ParisFranceEuropeEurope/Paris
PerthAustraliaOceaniaAustralia/Perth
PhoenixUnited StatesAmericasAmerica/Phoenix
RiyadhSaudi ArabiaAsiaAsia/Riyadh
RomeItalyEuropeEurope/Rome
San FranciscoUnited StatesAmericasAmerica/Los_Angeles
SantiagoChileAmericasAmerica/Santiago
São PauloBrazilAmericasAmerica/Sao_Paulo
SeattleUnited StatesAmericasAmerica/Los_Angeles
SeoulSouth KoreaAsiaAsia/Seoul
ShanghaiChinaAsiaAsia/Shanghai
SingaporeSingaporeAsiaAsia/Singapore
St. John’sCanadaAmericasAmerica/St_Johns
SydneyAustraliaOceaniaAustralia/Sydney
Tel AvivIsraelAsiaAsia/Jerusalem
TokyoJapanAsiaAsia/Tokyo
TorontoCanadaAmericasAmerica/Toronto
VancouverCanadaAmericasAmerica/Vancouver

City zones follow the calendar.

An identifier such as Europe/London includes the rules that determine the city’s UTC offset on a particular date. This is why the converter needs both a location and a date.

The directory covers a curated set of cities. In the converter, you can also search a full IANA identifier recognized by your browser.

Abbreviations need context.

EST is a fixed UTC−5 offset, while New York’s local time changes with the date. IST can mean different things in India, Ireland, and Israel. Select a city whenever you mean the local civil time.

Learn more in our guide to time zone abbreviations and UTC and GMT guide.