The timezones listed here can be used with your php.ini file or htaccess file. To learn how to change your PHP time zone setting read Setting a Timezone in PHP.
This is a complete list of PHP supported timezones taken from the official PHP website
Africa
| Africa/Abidjan | Africa/Accra | Africa/Addis_Ababa | Africa/Algiers |
| Africa/Asmara | Africa/Asmera | Africa/Bamako | Africa/Bangui |
| Africa/Banjul | Africa/Bissau | Africa/Blantyre | Africa/Brazzaville |
| Africa/Bujumbura | Africa/Cairo | Africa/Casablanca | Africa/Ceuta |
| Africa/Conakry | Africa/Dakar | Africa/Dar_es_Salaam | Africa/Djibouti |
| Africa/Douala | Africa/El_Aaiun | Africa/Freetown | Africa/Gaborone |
| Africa/Harare | Africa/Johannesburg | Africa/Kampala | Africa/Khartoum |
| Africa/Kigali | Africa/Kinshasa | Africa/Lagos | Africa/Libreville |
| Africa/Lome | Africa/Luanda | Africa/Lubumbashi | Africa/Lusaka |
| Africa/Malabo | Africa/Maputo | Africa/Maseru | Africa/Mbabane |
| Africa/Mogadishu | Africa/Monrovia | Africa/Nairobi | Africa/Ndjamena |
| Africa/Niamey | Africa/Nouakchott | Africa/Ouagadougou | Africa/Porto-Novo |
| Africa/Sao_Tome | Africa/Timbuktu | Africa/Tripoli | Africa/Tunis |
| Africa/Windhoek | |||
America
| America/Adak | America/Anchorage | America/Anguilla |
| America/Antigua | America/Araguaina | America/Argentina/Buenos_Aires |
| America/Argentina/Catamarca | America/Argentina/ComodRivadavia | America/Argentina/Cordoba |
| America/Argentina/Jujuy | America/Argentina/La_Rioja | America/Argentina/Mendoza |
| America/Argentina/Rio_Gallegos | America/Argentina/Salta | America/Argentina/San_Juan |
| America/Argentina/San_Luis | America/Argentina/Tucuman | America/Argentina/Ushuaia |
| America/Aruba | America/Asuncion | America/Atikokan |
| America/Atka | America/Bahia | America/Bahia_Banderas |
| America/Barbados | America/Belem | America/Belize |
| America/Blanc-Sablon | America/Boa_Vista | America/Bogota |
| America/Boise | America/Buenos_Aires | America/Cambridge_Bay |
| America/Campo_Grande | America/Cancun | America/Caracas |
| America/Catamarca | America/Cayenne | America/Cayman |
| America/Chicago | America/Chihuahua | America/Coral_Harbour |
| America/Cordoba | America/Costa_Rica | America/Cuiaba |
| America/Curacao | America/Danmarkshavn | America/Dawson |
| America/Dawson_Creek | America/Denver | America/Detroit |
| America/Dominica | America/Edmonton | America/Eirunepe |
| America/El_Salvador | America/Ensenada | America/Fort_Wayne |
| America/Fortaleza | America/Glace_Bay | America/Godthab |
| America/Goose_Bay | America/Grand_Turk | America/Grenada |
| America/Guadeloupe | America/Guatemala | America/Guayaquil |
| America/Guyana | America/Halifax | America/Havana |
| America/Hermosillo | America/Indiana/Indianapolis | America/Indiana/Knox |
| America/Indiana/Marengo | America/Indiana/Petersburg | America/Indiana/Tell_City |
| America/Indiana/Vevay | America/Indiana/Vincennes | America/Indiana/Winamac |
| America/Indianapolis | America/Inuvik | America/Iqaluit |
| America/Jamaica | America/Jujuy | America/Juneau |
| America/Kentucky/Louisville | America/Kentucky/Monticello | America/Knox_IN |
| America/La_Paz | America/Lima | America/Los_Angeles |
| America/Louisville | America/Maceio | America/Managua |
| America/Manaus | America/Marigot | America/Martinique |
| America/Matamoros | America/Mazatlan | America/Mendoza |
| America/Menominee | America/Merida | America/Mexico_City |
| America/Miquelon | America/Moncton | America/Monterrey |
| America/Montevideo | America/Montreal | America/Montserrat |
| America/Nassau | America/New_York | America/Nipigon |
| America/Nome | America/Noronha | America/North_Dakota/Center |
| America/North_Dakota/New_Salem | America/Ojinaga | America/Panama |
| America/Pangnirtung | America/Paramaribo | America/Phoenix |
| America/Port-au-Prince | America/Port_of_Spain | America/Porto_Acre |
| America/Porto_Velho | America/Puerto_Rico | America/Rainy_River |
| America/Rankin_Inlet | America/Recife | America/Regina |
| America/Resolute | America/Rio_Branco | America/Rosario |
| America/Santa_Isabel | America/Santarem | America/Santiago |
| America/Santo_Domingo | America/Sao_Paulo | America/Scoresbysund |
| America/Shiprock | America/St_Barthelemy | America/St_Johns |
| America/St_Kitts | America/St_Lucia | America/St_Thomas |
| America/St_Vincent | America/Swift_Current | America/Tegucigalpa |
| America/Thule | America/Thunder_Bay | America/Tijuana |
| America/Toronto | America/Tortola | America/Vancouver |
| America/Virgin | America/Whitehorse | America/Winnipeg |
| America/Yakutat | America/Yellowknife |
Antarctica
| Antarctica/Casey | Antarctica/Davis | Antarctica/DumontDUrville |
| Antarctica/Macquarie | Antarctica/Mawson | Antarctica/McMurdo |
| Antarctica/Palmer | Antarctica/Rothera | Antarctica/South_Pole |
| Antarctica/Palmer | Antarctica/Rothera |
Arctic
| Arctic/Longyearbyen |
Asia
| Asia/Aden | Asia/Almaty | Asia/Amman | Asia/Anadyr |
| Asia/Aqtau | Asia/Aqtobe | Asia/Ashgabat | Asia/Ashkhabad |
| Asia/Baghdad | Asia/Bahrain | Asia/Baku | Asia/Bangkok |
| Asia/Beirut | Asia/Bishkek | Asia/Brunei | Asia/Calcutta |
| Asia/Choibalsan | Asia/Chongqing | Asia/Chungking | Asia/Colombo |
| Asia/Dacca | Asia/Damascus | Asia/Dhaka | Asia/Dili |
| Asia/Dubai | Asia/Dushanbe | Asia/Gaza | Asia/Harbin |
| Asia/Ho_Chi_Minh | Asia/Hong_Kong | Asia/Hovd | Asia/Irkutsk |
| Asia/Istanbul | Asia/Jakarta | Asia/Jayapura | Asia/Jerusalem |
| Asia/Kabul | Asia/Kamchatka | Asia/Karachi | Asia/Kashgar |
| Asia/Kathmandu | Asia/Katmandu | Asia/Kolkata | Asia/Krasnoyarsk |
| Asia/Kuala_Lumpur | Asia/Kuching | Asia/Kuwait | Asia/Macao |
| Asia/Macau | Asia/Magadan | Asia/Makassar | Asia/Manila |
| Asia/Muscat | Asia/Nicosia | Asia/Novokuznetsk | Asia/Novosibirsk |
| Asia/Omsk | Asia/Oral | Asia/Phnom_Penh | Asia/Pontianak |
| Asia/Pyongyang | Asia/Qatar | Asia/Qyzylorda | Asia/Rangoon |
| Asia/Riyadh | Asia/Saigon | Asia/Sakhalin | Asia/Samarkand |
| Asia/Seoul | Asia/Shanghai | Asia/Singapore | Asia/Taipei |
| Asia/Tashkent | Asia/Tbilisi | Asia/Tehran | Asia/Tel_Aviv |
| Asia/Thimbu | Asia/Thimphu | Asia/Tokyo | Asia/Ujung_Pandang |
| Asia/Ulaanbaatar | Asia/Ulan_Bator | Asia/Urumqi | Asia/Vientiane |
| Asia/Vladivostok | Asia/Yakutsk | Asia/Yekaterinburg | Asia/Yerevan |
Atlantic
| Atlantic/Azores | Atlantic/Bermuda | Atlantic/Canary |
| Atlantic/Cape_Verde | Atlantic/Faeroe | Atlantic/Faroe |
| Atlantic/Jan_Mayen | Atlantic/Madeira | Atlantic/Reykjavik |
| Atlantic/South_Georgia | Atlantic/St_Helena | Atlantic/Stanley |
Australia
| Australia/ACT | Australia/Adelaide | Australia/Brisbane |
| Australia/Broken_Hill | Australia/Canberra | Australia/Currie |
| Australia/Darwin | Australia/Eucla | Australia/Hobart |
| Australia/LHI | Australia/Lindeman | Australia/Lord_Howe |
| Australia/Melbourne | Australia/North | Australia/NSW |
| Australia/Perth | Australia/Queensland | Australia/South |
| Australia/Sydney | Australia/Tasmania | Australia/Victoria |
| Australia/West | Australia/Yancowinna |
Europe
| Europe/Amsterdam | Europe/Andorra | Europe/Athens | Europe/Belfast |
| Europe/Belgrade | Europe/Berlin | Europe/Bratislava | Europe/Brussels |
| Europe/Bucharest | Europe/Budapest | Europe/Chisinau | Europe/Copenhagen |
| Europe/Dublin | Europe/Gibraltar | Europe/Guernsey | Europe/Helsinki |
| Europe/Isle_of_Man | Europe/Istanbul | Europe/Jersey | Europe/Kaliningrad |
| Europe/Kiev | Europe/Lisbon | Europe/Ljubljana | Europe/London |
| Europe/Luxembourg | Europe/Madrid | Europe/Malta | Europe/Mariehamn |
| Europe/Minsk | Europe/Monaco | Europe/Moscow | Europe/Nicosia |
| Europe/Oslo | Europe/Paris | Europe/Podgorica | Europe/Prague |
| Europe/Riga | Europe/Rome | Europe/Samara | Europe/San_Marino |
| Europe/Sarajevo | Europe/Simferopol | Europe/Skopje | Europe/Sofia |
| Europe/Stockholm | Europe/Tallinn | Europe/Tirane | Europe/Tiraspol |
| Europe/Uzhgorod | Europe/Vaduz | Europe/Vatican | Europe/Vienna |
| Europe/Vilnius | Europe/Volgograd | Europe/Warsaw | Europe/Zagreb |
| Europe/Zaporozhye | Europe/Zurich | ||
Indian
| Indian/Antananarivo | Indian/Chagos | Indian/Christmas | Indian/Cocos |
| Indian/Comoro | Indian/Kerguelen | Indian/Mahe | Indian/Maldives |
| Indian/Mauritius | Indian/Mayotte | Indian/Reunion |
Pacific
| Pacific/Apia | Pacific/Auckland | Pacific/Chatham | Pacific/Chuuk |
| Pacific/Easter | Pacific/Efate | Pacific/Enderbury | Pacific/Fakaofo |
| Pacific/Fiji | Pacific/Funafuti | Pacific/Galapagos | Pacific/Gambier |
| Pacific/Guadalcanal | Pacific/Guam | Pacific/Honolulu | Pacific/Johnston |
| Pacific/Kiritimati | Pacific/Kosrae | Pacific/Kwajalein | Pacific/Majuro |
| Pacific/Marquesas | Pacific/Midway | Pacific/Nauru | Pacific/Niue |
| Pacific/Norfolk | Pacific/Noumea | Pacific/Pago_Pago | Pacific/Palau |
| Pacific/Pitcairn | Pacific/Pohnpei | Pacific/Ponape | Pacific/Port_Moresby |
| Pacific/Rarotonga | Pacific/Saipan | Pacific/Samoa | Pacific/Tahiti |
| Pacific/Tarawa | Pacific/Tongatapu | Pacific/Truk | Pacific/Wake |
| Pacific/Wallis | Pacific/Yap | ||
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