Current Times for all IANA Time Zones

Zulu

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07:15
Mon

HST

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21:15
Sun

GMT

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07:15
Mon

UTC

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07:15
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IANA Timezone Current Time
Africa/Abidjan Mon 07:15
Africa/Accra Mon 07:15
Africa/Addis_Ababa Mon 10:15
Africa/Algiers Mon 08:15
Africa/Asmara Mon 10:15
Africa/Asmera Mon 10:15
Africa/Bamako Mon 07:15
Africa/Bangui Mon 08:15
Africa/Banjul Mon 07:15
Africa/Bissau Mon 07:15
Africa/Blantyre Mon 09:15
Africa/Brazzaville Mon 08:15
Africa/Bujumbura Mon 09:15
Africa/Cairo Mon 10:15
Africa/Casablanca Mon 08:15
Africa/Ceuta Mon 09:15
Africa/Conakry Mon 07:15
Africa/Dakar Mon 07:15
Africa/Dar_es_Salaam Mon 10:15
Africa/Djibouti Mon 10:15
Africa/Douala Mon 08:15
Africa/El_Aaiun Mon 08:15
Africa/Freetown Mon 07:15
Africa/Gaborone Mon 09:15
Africa/Harare Mon 09:15
Africa/Johannesburg Mon 09:15
Africa/Juba Mon 09:15
Africa/Kampala Mon 10:15
Africa/Khartoum Mon 09:15
Africa/Kigali Mon 09:15
Africa/Kinshasa Mon 08:15
Africa/Lagos Mon 08:15
Africa/Libreville Mon 08:15
Africa/Lome Mon 07:15
Africa/Luanda Mon 08:15
Africa/Lubumbashi Mon 09:15
Africa/Lusaka Mon 09:15
Africa/Malabo Mon 08:15
Africa/Maputo Mon 09:15
Africa/Maseru Mon 09:15
Africa/Mbabane Mon 09:15
Africa/Mogadishu Mon 10:15
Africa/Monrovia Mon 07:15
Africa/Nairobi Mon 10:15
Africa/Ndjamena Mon 08:15
Africa/Niamey Mon 08:15
Africa/Nouakchott Mon 07:15
Africa/Ouagadougou Mon 07:15
Africa/Porto-Novo Mon 08:15
Africa/Sao_Tome Mon 07:15
Africa/Timbuktu Mon 07:15
Africa/Tripoli Mon 09:15
Africa/Tunis Mon 08:15
Africa/Windhoek Mon 09:15
America/Adak Sun 22:15
America/Anchorage Sun 23:15
America/Anguilla Mon 03:15
America/Antigua Mon 03:15
America/Araguaina Mon 04:15
America/Argentina/Buenos_Aires Mon 04:15
America/Argentina/Catamarca Mon 04:15
America/Argentina/ComodRivadavia Mon 04:15
America/Argentina/Cordoba Mon 04:15
America/Argentina/Jujuy Mon 04:15
America/Argentina/La_Rioja Mon 04:15
America/Argentina/Mendoza Mon 04:15
America/Argentina/Rio_Gallegos Mon 04:15
America/Argentina/Salta Mon 04:15
America/Argentina/San_Juan Mon 04:15
America/Argentina/San_Luis Mon 04:15
America/Argentina/Tucuman Mon 04:15
America/Argentina/Ushuaia Mon 04:15
America/Aruba Mon 03:15
America/Asuncion Mon 04:15
America/Atikokan Mon 02:15
America/Atka Sun 22:15
America/Bahia Mon 04:15
America/Bahia_Banderas Mon 01:15
America/Barbados Mon 03:15
America/Belem Mon 04:15
America/Belize Mon 01:15
America/Blanc-Sablon Mon 03:15
America/Boa_Vista Mon 03:15
America/Bogota Mon 02:15
America/Boise Mon 01:15
America/Buenos_Aires Mon 04:15
America/Cambridge_Bay Mon 01:15
America/Campo_Grande Mon 03:15
America/Cancun Mon 02:15
America/Caracas Mon 03:15
America/Catamarca Mon 04:15
America/Cayenne Mon 04:15
America/Cayman Mon 02:15
America/Chicago Mon 02:15
America/Chihuahua Mon 01:15
America/Ciudad_Juarez Mon 01:15
America/Coral_Harbour Mon 02:15
America/Cordoba Mon 04:15
America/Costa_Rica Mon 01:15
America/Coyhaique Mon 04:15
America/Creston Mon 00:15
America/Cuiaba Mon 03:15
America/Curacao Mon 03:15
America/Danmarkshavn Mon 07:15
America/Dawson Mon 00:15
America/Dawson_Creek Mon 00:15
America/Denver Mon 01:15
America/Detroit Mon 03:15
America/Dominica Mon 03:15
America/Edmonton Mon 01:15
America/Eirunepe Mon 02:15
America/El_Salvador Mon 01:15
America/Ensenada Mon 00:15
America/Fort_Nelson Mon 00:15
America/Fort_Wayne Mon 03:15
America/Fortaleza Mon 04:15
America/Glace_Bay Mon 04:15
America/Godthab Mon 06:15
America/Goose_Bay Mon 04:15
America/Grand_Turk Mon 03:15
America/Grenada Mon 03:15
America/Guadeloupe Mon 03:15
America/Guatemala Mon 01:15
America/Guayaquil Mon 02:15
America/Guyana Mon 03:15
America/Halifax Mon 04:15
America/Havana Mon 03:15
America/Hermosillo Mon 00:15
America/Indiana/Indianapolis Mon 03:15
America/Indiana/Knox Mon 02:15
America/Indiana/Marengo Mon 03:15
America/Indiana/Petersburg Mon 03:15
America/Indiana/Tell_City Mon 02:15
America/Indiana/Vevay Mon 03:15
America/Indiana/Vincennes Mon 03:15
America/Indiana/Winamac Mon 03:15
America/Indianapolis Mon 03:15
America/Inuvik Mon 01:15
America/Iqaluit Mon 03:15
America/Jamaica Mon 02:15
America/Jujuy Mon 04:15
America/Juneau Sun 23:15
America/Kentucky/Louisville Mon 03:15
America/Kentucky/Monticello Mon 03:15
America/Knox_IN Mon 02:15
America/Kralendijk Mon 03:15
America/La_Paz Mon 03:15
America/Lima Mon 02:15
America/Los_Angeles Mon 00:15
America/Louisville Mon 03:15
America/Lower_Princes Mon 03:15
America/Maceio Mon 04:15
America/Managua Mon 01:15
America/Manaus Mon 03:15
America/Marigot Mon 03:15
America/Martinique Mon 03:15
America/Matamoros Mon 02:15
America/Mazatlan Mon 00:15
America/Mendoza Mon 04:15
America/Menominee Mon 02:15
America/Merida Mon 01:15
America/Metlakatla Sun 23:15
America/Mexico_City Mon 01:15
America/Miquelon Mon 05:15
America/Moncton Mon 04:15
America/Monterrey Mon 01:15
America/Montevideo Mon 04:15
America/Montreal Mon 03:15
America/Montserrat Mon 03:15
America/Nassau Mon 03:15
America/New_York Mon 03:15
America/Nipigon Mon 03:15
America/Nome Sun 23:15
America/Noronha Mon 05:15
America/North_Dakota/Beulah Mon 02:15
America/North_Dakota/Center Mon 02:15
America/North_Dakota/New_Salem Mon 02:15
America/Nuuk Mon 06:15
America/Ojinaga Mon 02:15
America/Panama Mon 02:15
America/Pangnirtung Mon 03:15
America/Paramaribo Mon 04:15
America/Phoenix Mon 00:15
America/Port_of_Spain Mon 03:15
America/Port-au-Prince Mon 03:15
America/Porto_Acre Mon 02:15
America/Porto_Velho Mon 03:15
America/Puerto_Rico Mon 03:15
America/Punta_Arenas Mon 04:15
America/Rainy_River Mon 02:15
America/Rankin_Inlet Mon 02:15
America/Recife Mon 04:15
America/Regina Mon 01:15
America/Resolute Mon 02:15
America/Rio_Branco Mon 02:15
America/Rosario Mon 04:15
America/Santa_Isabel Mon 00:15
America/Santarem Mon 04:15
America/Santiago Mon 03:15
America/Santo_Domingo Mon 03:15
America/Sao_Paulo Mon 04:15
America/Scoresbysund Mon 06:15
America/Shiprock Mon 01:15
America/Sitka Sun 23:15
America/St_Barthelemy Mon 03:15
America/St_Johns Mon 04:45
America/St_Kitts Mon 03:15
America/St_Lucia Mon 03:15
America/St_Thomas Mon 03:15
America/St_Vincent Mon 03:15
America/Swift_Current Mon 01:15
America/Tegucigalpa Mon 01:15
America/Thule Mon 04:15
America/Thunder_Bay Mon 03:15
America/Tijuana Mon 00:15
America/Toronto Mon 03:15
America/Tortola Mon 03:15
America/Vancouver Mon 00:15
America/Virgin Mon 03:15
America/Whitehorse Mon 00:15
America/Winnipeg Mon 02:15
America/Yakutat Sun 23:15
America/Yellowknife Mon 01:15
Antarctica/Casey Mon 15:15
Antarctica/Davis Mon 14:15
Antarctica/DumontDUrville Mon 17:15
Antarctica/Macquarie Mon 17:15
Antarctica/Mawson Mon 12:15
Antarctica/McMurdo Mon 19:15
Antarctica/Palmer Mon 04:15
Antarctica/Rothera Mon 04:15
Antarctica/South_Pole Mon 19:15
Antarctica/Syowa Mon 10:15
Antarctica/Troll Mon 09:15
Antarctica/Vostok Mon 12:15
Arctic/Longyearbyen Mon 09:15
Asia/Aden Mon 10:15
Asia/Almaty Mon 12:15
Asia/Amman Mon 10:15
Asia/Anadyr Mon 19:15
Asia/Aqtau Mon 12:15
Asia/Aqtobe Mon 12:15
Asia/Ashgabat Mon 12:15
Asia/Ashkhabad Mon 12:15
Asia/Atyrau Mon 12:15
Asia/Baghdad Mon 10:15
Asia/Bahrain Mon 10:15
Asia/Baku Mon 11:15
Asia/Bangkok Mon 14:15
Asia/Barnaul Mon 14:15
Asia/Beirut Mon 10:15
Asia/Bishkek Mon 13:15
Asia/Brunei Mon 15:15
Asia/Calcutta Mon 12:45
Asia/Chita Mon 16:15
Asia/Choibalsan Mon 15:15
Asia/Chongqing Mon 15:15
Asia/Chungking Mon 15:15
Asia/Colombo Mon 12:45
Asia/Dacca Mon 13:15
Asia/Damascus Mon 10:15
Asia/Dhaka Mon 13:15
Asia/Dili Mon 16:15
Asia/Dubai Mon 11:15
Asia/Dushanbe Mon 12:15
Asia/Famagusta Mon 10:15
Asia/Gaza Mon 10:15
Asia/Harbin Mon 15:15
Asia/Hebron Mon 10:15
Asia/Ho_Chi_Minh Mon 14:15
Asia/Hong_Kong Mon 15:15
Asia/Hovd Mon 14:15
Asia/Irkutsk Mon 15:15
Asia/Istanbul Mon 10:15
Asia/Jakarta Mon 14:15
Asia/Jayapura Mon 16:15
Asia/Jerusalem Mon 10:15
Asia/Kabul Mon 11:45
Asia/Kamchatka Mon 19:15
Asia/Karachi Mon 12:15
Asia/Kashgar Mon 13:15
Asia/Kathmandu Mon 13:00
Asia/Katmandu Mon 13:00
Asia/Khandyga Mon 16:15
Asia/Kolkata Mon 12:45
Asia/Krasnoyarsk Mon 14:15
Asia/Kuala_Lumpur Mon 15:15
Asia/Kuching Mon 15:15
Asia/Kuwait Mon 10:15
Asia/Macao Mon 15:15
Asia/Macau Mon 15:15
Asia/Magadan Mon 18:15
Asia/Makassar Mon 15:15
Asia/Manila Mon 15:15
Asia/Muscat Mon 11:15
Asia/Nicosia Mon 10:15
Asia/Novokuznetsk Mon 14:15
Asia/Novosibirsk Mon 14:15
Asia/Omsk Mon 13:15
Asia/Oral Mon 12:15
Asia/Phnom_Penh Mon 14:15
Asia/Pontianak Mon 14:15
Asia/Pyongyang Mon 16:15
Asia/Qatar Mon 10:15
Asia/Qostanay Mon 12:15
Asia/Qyzylorda Mon 12:15
Asia/Rangoon Mon 13:45
Asia/Riyadh Mon 10:15
Asia/Saigon Mon 14:15
Asia/Sakhalin Mon 18:15
Asia/Samarkand Mon 12:15
Asia/Seoul Mon 16:15
Asia/Shanghai Mon 15:15
Asia/Singapore Mon 15:15
Asia/Srednekolymsk Mon 18:15
Asia/Taipei Mon 15:15
Asia/Tashkent Mon 12:15
Asia/Tbilisi Mon 11:15
Asia/Tehran Mon 10:45
Asia/Tel_Aviv Mon 10:15
Asia/Thimbu Mon 13:15
Asia/Thimphu Mon 13:15
Asia/Tokyo Mon 16:15
Asia/Tomsk Mon 14:15
Asia/Ujung_Pandang Mon 15:15
Asia/Ulaanbaatar Mon 15:15
Asia/Ulan_Bator Mon 15:15
Asia/Urumqi Mon 13:15
Asia/Ust-Nera Mon 17:15
Asia/Vientiane Mon 14:15
Asia/Vladivostok Mon 17:15
Asia/Yakutsk Mon 16:15
Asia/Yangon Mon 13:45
Asia/Yekaterinburg Mon 12:15
Asia/Yerevan Mon 11:15
Atlantic/Azores Mon 07:15
Atlantic/Bermuda Mon 04:15
Atlantic/Canary Mon 08:15
Atlantic/Cape_Verde Mon 06:15
Atlantic/Faeroe Mon 08:15
Atlantic/Faroe Mon 08:15
Atlantic/Jan_Mayen Mon 09:15
Atlantic/Madeira Mon 08:15
Atlantic/Reykjavik Mon 07:15
Atlantic/South_Georgia Mon 05:15
Atlantic/St_Helena Mon 07:15
Atlantic/Stanley Mon 04:15
Australia/ACT Mon 17:15
Australia/Adelaide Mon 16:45
Australia/Brisbane Mon 17:15
Australia/Broken_Hill Mon 16:45
Australia/Canberra Mon 17:15
Australia/Currie Mon 17:15
Australia/Darwin Mon 16:45
Australia/Eucla Mon 16:00
Australia/Hobart Mon 17:15
Australia/LHI Mon 17:45
Australia/Lindeman Mon 17:15
Australia/Lord_Howe Mon 17:45
Australia/Melbourne Mon 17:15
Australia/North Mon 16:45
Australia/NSW Mon 17:15
Australia/Perth Mon 15:15
Australia/Queensland Mon 17:15
Australia/South Mon 16:45
Australia/Sydney Mon 17:15
Australia/Tasmania Mon 17:15
Australia/Victoria Mon 17:15
Australia/West Mon 15:15
Australia/Yancowinna Mon 16:45
Brazil/Acre Mon 02:15
Brazil/DeNoronha Mon 05:15
Brazil/East Mon 04:15
Brazil/West Mon 03:15
Canada/Atlantic Mon 04:15
Canada/Central Mon 02:15
Canada/Eastern Mon 03:15
Canada/Mountain Mon 01:15
Canada/Newfoundland Mon 04:45
Canada/Pacific Mon 00:15
Canada/Saskatchewan Mon 01:15
Canada/Yukon Mon 00:15
CET Mon 09:15
Chile/Continental Mon 03:15
Chile/EasterIsland Mon 01:15
CST6CDT Mon 02:15
Cuba Mon 03:15
EET Mon 10:15
Egypt Mon 10:15
Eire Mon 08:15
EST Mon 02:15
EST5EDT Mon 03:15
Etc/GMT Mon 07:15
Etc/GMT-0 Mon 07:15
Etc/GMT-1 Mon 08:15
Etc/GMT-10 Mon 17:15
Etc/GMT-11 Mon 18:15
Etc/GMT-12 Mon 19:15
Etc/GMT-13 Mon 20:15
Etc/GMT-14 Mon 21:15
Etc/GMT-2 Mon 09:15
Etc/GMT-3 Mon 10:15
Etc/GMT-4 Mon 11:15
Etc/GMT-5 Mon 12:15
Etc/GMT-6 Mon 13:15
Etc/GMT-7 Mon 14:15
Etc/GMT-8 Mon 15:15
Etc/GMT-9 Mon 16:15
Etc/GMT+0 Mon 07:15
Etc/GMT+1 Mon 06:15
Etc/GMT+10 Sun 21:15
Etc/GMT+11 Sun 20:15
Etc/GMT+12 Sun 19:15
Etc/GMT+2 Mon 05:15
Etc/GMT+3 Mon 04:15
Etc/GMT+4 Mon 03:15
Etc/GMT+5 Mon 02:15
Etc/GMT+6 Mon 01:15
Etc/GMT+7 Mon 00:15
Etc/GMT+8 Sun 23:15
Etc/GMT+9 Sun 22:15
Etc/Greenwich Mon 07:15
Etc/UCT Mon 07:15
Etc/Universal Mon 07:15
Etc/UTC Mon 07:15
Etc/Zulu Mon 07:15
Europe/Amsterdam Mon 09:15
Europe/Andorra Mon 09:15
Europe/Astrakhan Mon 11:15
Europe/Athens Mon 10:15
Europe/Belfast Mon 08:15
Europe/Belgrade Mon 09:15
Europe/Berlin Mon 09:15
Europe/Bratislava Mon 09:15
Europe/Brussels Mon 09:15
Europe/Bucharest Mon 10:15
Europe/Budapest Mon 09:15
Europe/Busingen Mon 09:15
Europe/Chisinau Mon 10:15
Europe/Copenhagen Mon 09:15
Europe/Dublin Mon 08:15
Europe/Gibraltar Mon 09:15
Europe/Guernsey Mon 08:15
Europe/Helsinki Mon 10:15
Europe/Isle_of_Man Mon 08:15
Europe/Istanbul Mon 10:15
Europe/Jersey Mon 08:15
Europe/Kaliningrad Mon 09:15
Europe/Kiev Mon 10:15
Europe/Kirov Mon 10:15
Europe/Kyiv Mon 10:15
Europe/Lisbon Mon 08:15
Europe/Ljubljana Mon 09:15
Europe/London Mon 08:15
Europe/Luxembourg Mon 09:15
Europe/Madrid Mon 09:15
Europe/Malta Mon 09:15
Europe/Mariehamn Mon 10:15
Europe/Minsk Mon 10:15
Europe/Monaco Mon 09:15
Europe/Moscow Mon 10:15
Europe/Nicosia Mon 10:15
Europe/Oslo Mon 09:15
Europe/Paris Mon 09:15
Europe/Podgorica Mon 09:15
Europe/Prague Mon 09:15
Europe/Riga Mon 10:15
Europe/Rome Mon 09:15
Europe/Samara Mon 11:15
Europe/San_Marino Mon 09:15
Europe/Sarajevo Mon 09:15
Europe/Saratov Mon 11:15
Europe/Simferopol Mon 10:15
Europe/Skopje Mon 09:15
Europe/Sofia Mon 10:15
Europe/Stockholm Mon 09:15
Europe/Tallinn Mon 10:15
Europe/Tirane Mon 09:15
Europe/Tiraspol Mon 10:15
Europe/Ulyanovsk Mon 11:15
Europe/Uzhgorod Mon 10:15
Europe/Vaduz Mon 09:15
Europe/Vatican Mon 09:15
Europe/Vienna Mon 09:15
Europe/Vilnius Mon 10:15
Europe/Volgograd Mon 10:15
Europe/Warsaw Mon 09:15
Europe/Zagreb Mon 09:15
Europe/Zaporozhye Mon 10:15
Europe/Zurich Mon 09:15
Factory Mon 07:15
GB Mon 08:15
GB-Eire Mon 08:15
GMT Mon 07:15
GMT-0 Mon 07:15
GMT+0 Mon 07:15
Greenwich Mon 07:15
Hongkong Mon 15:15
HST Sun 21:15
Iceland Mon 07:15
Indian/Antananarivo Mon 10:15
Indian/Chagos Mon 13:15
Indian/Christmas Mon 14:15
Indian/Cocos Mon 13:45
Indian/Comoro Mon 10:15
Indian/Kerguelen Mon 12:15
Indian/Mahe Mon 11:15
Indian/Maldives Mon 12:15
Indian/Mauritius Mon 11:15
Indian/Mayotte Mon 10:15
Indian/Reunion Mon 11:15
Iran Mon 10:45
Israel Mon 10:15
Jamaica Mon 02:15
Japan Mon 16:15
Kwajalein Mon 19:15
Libya Mon 09:15
MET Mon 09:15
Mexico/BajaNorte Mon 00:15
Mexico/BajaSur Mon 00:15
Mexico/General Mon 01:15
MST Mon 00:15
MST7MDT Mon 01:15
Navajo Mon 01:15
NZ Mon 19:15
NZ-CHAT Mon 20:00
Pacific/Apia Mon 20:15
Pacific/Auckland Mon 19:15
Pacific/Bougainville Mon 18:15
Pacific/Chatham Mon 20:00
Pacific/Chuuk Mon 17:15
Pacific/Easter Mon 01:15
Pacific/Efate Mon 18:15
Pacific/Enderbury Mon 20:15
Pacific/Fakaofo Mon 20:15
Pacific/Fiji Mon 19:15
Pacific/Funafuti Mon 19:15
Pacific/Galapagos Mon 01:15
Pacific/Gambier Sun 22:15
Pacific/Guadalcanal Mon 18:15
Pacific/Guam Mon 17:15
Pacific/Honolulu Sun 21:15
Pacific/Johnston Sun 21:15
Pacific/Kanton Mon 20:15
Pacific/Kiritimati Mon 21:15
Pacific/Kosrae Mon 18:15
Pacific/Kwajalein Mon 19:15
Pacific/Majuro Mon 19:15
Pacific/Marquesas Sun 21:45
Pacific/Midway Sun 20:15
Pacific/Nauru Mon 19:15
Pacific/Niue Sun 20:15
Pacific/Norfolk Mon 18:15
Pacific/Noumea Mon 18:15
Pacific/Pago_Pago Sun 20:15
Pacific/Palau Mon 16:15
Pacific/Pitcairn Sun 23:15
Pacific/Pohnpei Mon 18:15
Pacific/Ponape Mon 18:15
Pacific/Port_Moresby Mon 17:15
Pacific/Rarotonga Sun 21:15
Pacific/Saipan Mon 17:15
Pacific/Samoa Sun 20:15
Pacific/Tahiti Sun 21:15
Pacific/Tarawa Mon 19:15
Pacific/Tongatapu Mon 20:15
Pacific/Truk Mon 17:15
Pacific/Wake Mon 19:15
Pacific/Wallis Mon 19:15
Pacific/Yap Mon 17:15
Poland Mon 09:15
Portugal Mon 08:15
PRC Mon 15:15
PST8PDT Mon 00:15
ROC Mon 15:15
ROK Mon 16:15
Singapore Mon 15:15
Turkey Mon 10:15
UCT Mon 07:15
Universal Mon 07:15
US/Alaska Sun 23:15
US/Aleutian Sun 22:15
US/Arizona Mon 00:15
US/Central Mon 02:15
US/East-Indiana Mon 03:15
US/Eastern Mon 03:15
US/Hawaii Sun 21:15
US/Indiana-Starke Mon 02:15
US/Michigan Mon 03:15
US/Mountain Mon 01:15
US/Pacific Mon 00:15
US/Samoa Sun 20:15
UTC Mon 07:15
W-SU Mon 10:15
WET Mon 08:15
Zulu Mon 07:15

FAQ — IANA Time Zone Database

Common questions about this page — answers customized for the data shown above.

IANA (Internet Assigned Numbers Authority) time zones are the global standard for naming time zones in computing. Each is identified by a Region/City pair like America/New_York, Europe/London, Asia/Tokyo. The IANA tz database is maintained by the IANA and used by Unix, Linux, macOS, Java, Python, and almost every modern operating system and programming language.

EST is ambiguous — it could be Eastern Standard Time (USA), Eastern Standard Time (Australia), or Egypt Standard Time. America/New_York unambiguously specifies the New York rules (UTC-5 standard, UTC-4 in DST, with US DST transition dates). For human reading, the abbreviation pages are more convenient — for code, always use IANA.

The tz database is updated several times a year as countries change their DST rules, abolish/adopt DST, or alter their UTC offset. Updates are released as named versions (e.g., 2025b). Operating systems pick up new releases through regular software updates.

Some IANA names have three parts when a region within a country has its own history of differing time-zone rules. Indiana's counties haven't always agreed on DST policy, so the database tracks them separately to preserve historical accuracy.

Yes — the IANA database stores not just the current rule for each zone but its complete history. Look up a date in 1950 and you'll get the rules that applied in 1950 (LMT before standardization, then whichever standard rules came next). This is critical for legal and historical record-keeping.

Use the time zone converter — it accepts IANA names directly and handles DST transitions for both source and target zones.

The interactive time zone map colors each IANA region geographically. Click a region to see its IANA name and the current local time.

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