====== List all available timezones that are in your JVM ====== If you read the documentation of [[http://docs.oracle.com/javase/7/docs/api/java/util/TimeZone.html|TimeZone]] class in the API (this one points to version 7 of the API), you will find that there aren't a list of all the available timezones, instead of this you will find this text: You can use the getAvailableIDs method to iterate through all the supported time zone IDs. You can then choose a supported ID to get a TimeZone. If the time zone you want is not represented by one of the supported IDs, then a custom time zone ID can be specified to produce a TimeZone. The syntax of a custom time zone ID is: I have to confess that this is annoying enough to encourage me to develop my own little program to do this, that I share with you: import java.util.TimeZone; public class App { private final static int EXIT_OK = 0; public static void main( String[] args ) { String[] allTheIds = TimeZone.getAvailableIDs(); System.out.println("All available timezones:"); for( int nId = 0; nId < allTheIds.length; nId++ ) { System.out.println( allTheIds[nId] ); } System.exit( EXIT_OK ); } } And the result as of 10/31/2012 (see below). However, be careful!!! Time zones do change!!! This is rare, but sometimes, due political factors new countries are created and they install a new time zone, or others decide to change its time zone. Don't take this list as inmutable unless you are handling very well stable countries. All available timezones: Etc/GMT+12 Etc/GMT+11 Pacific/Midway Pacific/Niue Pacific/Pago_Pago Pacific/Samoa US/Samoa America/Adak America/Atka Etc/GMT+10 HST Pacific/Honolulu Pacific/Johnston Pacific/Rarotonga Pacific/Tahiti SystemV/HST10 US/Aleutian US/Hawaii Pacific/Marquesas AST America/Anchorage America/Juneau America/Nome America/Sitka America/Yakutat Etc/GMT+9 Pacific/Gambier SystemV/YST9 SystemV/YST9YDT US/Alaska America/Dawson America/Ensenada America/Los_Angeles America/Metlakatla America/Santa_Isabel America/Tijuana America/Vancouver America/Whitehorse Canada/Pacific Canada/Yukon Etc/GMT+8 Mexico/BajaNorte PST PST8PDT Pacific/Pitcairn SystemV/PST8 SystemV/PST8PDT US/Pacific US/Pacific-New America/Boise America/Cambridge_Bay America/Chihuahua America/Creston America/Dawson_Creek America/Denver America/Edmonton America/Hermosillo America/Inuvik America/Mazatlan America/Ojinaga America/Phoenix America/Shiprock America/Yellowknife Canada/Mountain Etc/GMT+7 MST MST7MDT Mexico/BajaSur Navajo PNT SystemV/MST7 SystemV/MST7MDT US/Arizona US/Mountain America/Bahia_Banderas America/Belize America/Cancun America/Chicago America/Costa_Rica America/El_Salvador America/Guatemala America/Indiana/Knox America/Indiana/Tell_City America/Knox_IN America/Managua America/Matamoros America/Menominee America/Merida America/Mexico_City America/Monterrey America/North_Dakota/Beulah America/North_Dakota/Center America/North_Dakota/New_Salem America/Rainy_River America/Rankin_Inlet America/Regina America/Resolute America/Swift_Current America/Tegucigalpa America/Winnipeg CST CST6CDT Canada/Central Canada/East-Saskatchewan Canada/Saskatchewan Chile/EasterIsland Etc/GMT+6 Mexico/General Pacific/Easter Pacific/Galapagos SystemV/CST6 SystemV/CST6CDT US/Central US/Indiana-Starke America/Atikokan America/Bogota America/Cayman America/Coral_Harbour America/Detroit America/Fort_Wayne America/Grand_Turk America/Guayaquil America/Havana America/Indiana/Indianapolis America/Indiana/Marengo America/Indiana/Petersburg America/Indiana/Vevay America/Indiana/Vincennes America/Indiana/Winamac America/Indianapolis America/Iqaluit America/Jamaica America/Kentucky/Louisville America/Kentucky/Monticello America/Lima America/Louisville America/Montreal America/Nassau America/New_York America/Nipigon America/Panama America/Pangnirtung America/Port-au-Prince America/Thunder_Bay America/Toronto Canada/Eastern Cuba EST EST5EDT Etc/GMT+5 IET Jamaica SystemV/EST5 SystemV/EST5EDT US/East-Indiana US/Eastern US/Michigan America/Caracas America/Anguilla America/Antigua America/Argentina/San_Luis America/Aruba America/Asuncion America/Barbados America/Blanc-Sablon America/Boa_Vista America/Campo_Grande America/Cuiaba America/Curacao America/Dominica America/Eirunepe America/Glace_Bay America/Goose_Bay America/Grenada America/Guadeloupe America/Guyana America/Halifax America/Kralendijk America/La_Paz America/Lower_Princes America/Manaus America/Marigot America/Martinique America/Moncton America/Montserrat America/Port_of_Spain America/Porto_Acre America/Porto_Velho America/Puerto_Rico America/Rio_Branco America/Santiago America/Santo_Domingo America/St_Barthelemy America/St_Kitts America/St_Lucia America/St_Thomas America/St_Vincent America/Thule America/Tortola America/Virgin Antarctica/Palmer Atlantic/Bermuda Brazil/Acre Brazil/West Canada/Atlantic Chile/Continental Etc/GMT+4 PRT SystemV/AST4 SystemV/AST4ADT America/St_Johns CNT Canada/Newfoundland AGT 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/Tucuman America/Argentina/Ushuaia America/Bahia America/Belem America/Buenos_Aires America/Catamarca America/Cayenne America/Cordoba America/Fortaleza America/Godthab America/Jujuy America/Maceio America/Mendoza America/Miquelon America/Montevideo America/Paramaribo America/Recife America/Rosario America/Santarem America/Sao_Paulo Antarctica/Rothera Atlantic/Stanley BET Brazil/East Etc/GMT+3 America/Noronha Atlantic/South_Georgia Brazil/DeNoronha Etc/GMT+2 America/Scoresbysund Atlantic/Azores Atlantic/Cape_Verde Etc/GMT+1 Africa/Abidjan Africa/Accra Africa/Bamako Africa/Banjul Africa/Bissau Africa/Casablanca Africa/Conakry Africa/Dakar Africa/El_Aaiun Africa/Freetown Africa/Lome Africa/Monrovia Africa/Nouakchott Africa/Ouagadougou Africa/Sao_Tome Africa/Timbuktu America/Danmarkshavn Atlantic/Canary Atlantic/Faeroe Atlantic/Faroe Atlantic/Madeira Atlantic/Reykjavik Atlantic/St_Helena Eire Etc/GMT Etc/GMT+0 Etc/GMT-0 Etc/GMT0 Etc/Greenwich Etc/UCT Etc/UTC Etc/Universal Etc/Zulu Europe/Belfast Europe/Dublin Europe/Guernsey Europe/Isle_of_Man Europe/Jersey Europe/Lisbon Europe/London GB GB-Eire GMT GMT0 Greenwich Iceland Portugal UCT UTC Universal WET Zulu Africa/Algiers Africa/Bangui Africa/Brazzaville Africa/Ceuta Africa/Douala Africa/Kinshasa Africa/Lagos Africa/Libreville Africa/Luanda Africa/Malabo Africa/Ndjamena Africa/Niamey Africa/Porto-Novo Africa/Tunis Africa/Windhoek Arctic/Longyearbyen Atlantic/Jan_Mayen CET ECT Etc/GMT-1 Europe/Amsterdam Europe/Andorra Europe/Belgrade Europe/Berlin Europe/Bratislava Europe/Brussels Europe/Budapest Europe/Copenhagen Europe/Gibraltar Europe/Ljubljana Europe/Luxembourg Europe/Madrid Europe/Malta Europe/Monaco Europe/Oslo Europe/Paris Europe/Podgorica Europe/Prague Europe/Rome Europe/San_Marino Europe/Sarajevo Europe/Skopje Europe/Stockholm Europe/Tirane Europe/Vaduz Europe/Vatican Europe/Vienna Europe/Warsaw Europe/Zagreb Europe/Zurich MET Poland ART Africa/Blantyre Africa/Bujumbura Africa/Cairo Africa/Gaborone Africa/Harare Africa/Johannesburg Africa/Kigali Africa/Lubumbashi Africa/Lusaka Africa/Maputo Africa/Maseru Africa/Mbabane Africa/Tripoli Asia/Amman Asia/Beirut Asia/Damascus Asia/Gaza Asia/Hebron Asia/Istanbul Asia/Jerusalem Asia/Nicosia Asia/Tel_Aviv CAT EET Egypt Etc/GMT-2 Europe/Athens Europe/Bucharest Europe/Chisinau Europe/Helsinki Europe/Istanbul Europe/Kiev Europe/Mariehamn Europe/Nicosia Europe/Riga Europe/Simferopol Europe/Sofia Europe/Tallinn Europe/Tiraspol Europe/Uzhgorod Europe/Vilnius Europe/Zaporozhye Israel Libya Turkey Africa/Addis_Ababa Africa/Asmara Africa/Asmera Africa/Dar_es_Salaam Africa/Djibouti Africa/Juba Africa/Kampala Africa/Khartoum Africa/Mogadishu Africa/Nairobi Antarctica/Syowa Asia/Aden Asia/Baghdad Asia/Bahrain Asia/Kuwait Asia/Qatar Asia/Riyadh EAT Etc/GMT-3 Europe/Kaliningrad Europe/Minsk Indian/Antananarivo Indian/Comoro Indian/Mayotte Asia/Riyadh87 Asia/Riyadh88 Asia/Riyadh89 Mideast/Riyadh87 Mideast/Riyadh88 Mideast/Riyadh89 Asia/Tehran Iran Asia/Baku Asia/Dubai Asia/Muscat Asia/Tbilisi Asia/Yerevan Etc/GMT-4 Europe/Moscow Europe/Samara Europe/Volgograd Indian/Mahe Indian/Mauritius Indian/Reunion NET W-SU Asia/Kabul Antarctica/Mawson Asia/Aqtau Asia/Aqtobe Asia/Ashgabat Asia/Ashkhabad Asia/Dushanbe Asia/Karachi Asia/Oral Asia/Samarkand Asia/Tashkent Etc/GMT-5 Indian/Kerguelen Indian/Maldives PLT Asia/Calcutta Asia/Colombo Asia/Kolkata IST Asia/Kathmandu Asia/Katmandu Antarctica/Vostok Asia/Almaty Asia/Bishkek Asia/Dacca Asia/Dhaka Asia/Qyzylorda Asia/Thimbu Asia/Thimphu Asia/Yekaterinburg BST Etc/GMT-6 Indian/Chagos Asia/Rangoon Indian/Cocos Antarctica/Davis Asia/Bangkok Asia/Ho_Chi_Minh Asia/Hovd Asia/Jakarta Asia/Novokuznetsk Asia/Novosibirsk Asia/Omsk Asia/Phnom_Penh Asia/Pontianak Asia/Saigon Asia/Vientiane Etc/GMT-7 Indian/Christmas VST Antarctica/Casey Asia/Brunei Asia/Choibalsan Asia/Chongqing Asia/Chungking Asia/Harbin Asia/Hong_Kong Asia/Kashgar Asia/Krasnoyarsk Asia/Kuala_Lumpur Asia/Kuching Asia/Macao Asia/Macau Asia/Makassar Asia/Manila Asia/Shanghai Asia/Singapore Asia/Taipei Asia/Ujung_Pandang Asia/Ulaanbaatar Asia/Ulan_Bator Asia/Urumqi Australia/Perth Australia/West CTT Etc/GMT-8 Hongkong PRC Singapore Australia/Eucla Asia/Dili Asia/Irkutsk Asia/Jayapura Asia/Pyongyang Asia/Seoul Asia/Tokyo Etc/GMT-9 JST Japan Pacific/Palau ROK ACT Australia/Adelaide Australia/Broken_Hill Australia/Darwin Australia/North Australia/South Australia/Yancowinna AET Antarctica/DumontDUrville Asia/Yakutsk Australia/ACT Australia/Brisbane Australia/Canberra Australia/Currie Australia/Hobart Australia/Lindeman Australia/Melbourne Australia/NSW Australia/Queensland Australia/Sydney Australia/Tasmania Australia/Victoria Etc/GMT-10 Pacific/Chuuk Pacific/Guam Pacific/Port_Moresby Pacific/Saipan Pacific/Truk Pacific/Yap Australia/LHI Australia/Lord_Howe Antarctica/Macquarie Asia/Sakhalin Asia/Vladivostok Etc/GMT-11 Pacific/Efate Pacific/Guadalcanal Pacific/Kosrae Pacific/Noumea Pacific/Pohnpei Pacific/Ponape SST Pacific/Norfolk Antarctica/McMurdo Antarctica/South_Pole Asia/Anadyr Asia/Kamchatka Asia/Magadan Etc/GMT-12 Kwajalein NST NZ Pacific/Auckland Pacific/Fiji Pacific/Funafuti Pacific/Kwajalein Pacific/Majuro Pacific/Nauru Pacific/Tarawa Pacific/Wake Pacific/Wallis NZ-CHAT Pacific/Chatham Etc/GMT-13 MIT Pacific/Apia Pacific/Enderbury Pacific/Tongatapu Etc/GMT-14 Pacific/Fakaofo Pacific/Kiritimati