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Greenwich Mean Time (GMT/BST) Converter

Convert Greenwich Mean Time to any time zone, with daylight saving handled automatically. The table below compares it with every other zone.

GMT → UTC

12:00 PM

Wednesday, January 15, 2025

GMT to UTC conversion chart

Each hour of the day in GMT and its equivalent in UTC.

GMTUTC
12:00 AM12:00 AM
1:00 AM1:00 AM
2:00 AM2:00 AM
3:00 AM3:00 AM
4:00 AM4:00 AM
5:00 AM5:00 AM
6:00 AM6:00 AM
7:00 AM7:00 AM
8:00 AM8:00 AM
9:00 AM9:00 AM
10:00 AM10:00 AM
11:00 AM11:00 AM
12:00 PM12:00 PM
1:00 PM1:00 PM
2:00 PM2:00 PM
3:00 PM3:00 PM
4:00 PM4:00 PM
5:00 PM5:00 PM
6:00 PM6:00 PM
7:00 PM7:00 PM
8:00 PM8:00 PM
9:00 PM9:00 PM
10:00 PM10:00 PM
11:00 PM11:00 PM

Greenwich Mean Time compared with every other time zone

Each row converts from Greenwich Mean Time to another zone. Where daylight saving changes the time difference, each stretch of 2026 is listed with its dates.

FromToCities in To zoneTime differenceCurrent timeConvert
Greenwich Mean Time (GMT/BST)American Samoa TimeUTC-11UTC-11Midway, Pago Pago12h behind (Mar 29 – Oct 25)11h behind (Oct 25 – Mar 29)–Convert GMT to Midway
Greenwich Mean Time (GMT/BST)Niue TimeNUTUTC-11Alofi12h behind (Mar 29 – Oct 25)11h behind (Oct 25 – Mar 29)–Convert GMT to NUT
Greenwich Mean Time (GMT/BST)Cook Islands TimeCKTUTC-10Avarua11h behind (Mar 29 – Oct 25)10h behind (Oct 25 – Mar 29)–Convert GMT to CKT
Greenwich Mean Time (GMT/BST)Hawaii-Aleutian TimeHASTUTC-10Honolulu, East Honolulu, Pearl City, Makakilo / Kapolei / Honokai Hale11h behind (Mar 29 – Oct 25)10h behind (Oct 25 – Mar 29)–Convert GMT to HAST
Greenwich Mean Time (GMT/BST)Hawaii-Aleutian Time – AdakHAST/HADTUTC-10 / UTC-9Adak9h behind (Mar 8 – Mar 29)10h behind (Mar 29 – Oct 25)9h behind (Oct 25 – Nov 1)10h behind (Nov 1 – Mar 8)–Convert GMT to HAST
Greenwich Mean Time (GMT/BST)Tahiti TimeTAHTUTC-10Faaa, Papeete, Punaauia11h behind (Mar 29 – Oct 25)10h behind (Oct 25 – Mar 29)–Convert GMT to TAHT
Greenwich Mean Time (GMT/BST)Marquesas TimeMARTUTC-9:30Marquesas10h 30m behind (Mar 29 – Oct 25)9h 30m behind (Oct 25 – Mar 29)–Convert GMT to MART
Greenwich Mean Time (GMT/BST)Alaska TimeAKST/AKDTUTC-9 / UTC-8Anchorage, Fairbanks, Juneau, Eagle River8h behind (Mar 8 – Mar 29)9h behind (Mar 29 – Oct 25)8h behind (Oct 25 – Nov 1)9h behind (Nov 1 – Mar 8)–Convert GMT to AKST
Greenwich Mean Time (GMT/BST)Gambier TimeGAMTUTC-9Gambier10h behind (Mar 29 – Oct 25)9h behind (Oct 25 – Mar 29)–Convert GMT to GAMT
Greenwich Mean Time (GMT/BST)Pacific TimePST/PDTUTC-8 / UTC-7Los Angeles, San Diego, San Jose, San Francisco, Tijuana, Mexicali, Ensenada, Rosarito, Vancouver, Surrey, Victoria, Burnaby7h behind (Mar 8 – Mar 29)8h behind (Mar 29 – Oct 25)7h behind (Oct 25 – Nov 1)8h behind (Nov 1 – Mar 8)–Convert GMT to PST
Greenwich Mean Time (GMT/BST)Pitcairn TimePSTUTC-8Adamstown9h behind (Mar 29 – Oct 25)8h behind (Oct 25 – Mar 29)–Convert GMT to PST
Greenwich Mean Time (GMT/BST)Mexican Pacific TimeUTC-7UTC-7Hermosillo, Culiacán, Mazatlán, Tepic8h behind (Mar 29 – Oct 25)7h behind (Oct 25 – Mar 29)–Convert GMT to Hermosillo
Greenwich Mean Time (GMT/BST)Mountain TimeMST/MDTUTC-7 / UTC-6Denver, El Paso, Albuquerque, Colorado Springs, Calgary, Edmonton, Lethbridge, Red Deer, Ciudad Juárez6h behind (Mar 8 – Mar 29)7h behind (Mar 29 – Oct 25)6h behind (Oct 25 – Nov 1)7h behind (Nov 1 – Mar 8)–Convert GMT to MST
Greenwich Mean Time (GMT/BST)Mountain Time – PhoenixMSTUTC-7Phoenix, Tucson, Mesa, Chandler8h behind (Mar 29 – Oct 25)7h behind (Oct 25 – Mar 29)–Convert GMT to MST
Greenwich Mean Time (GMT/BST)Yukon TimeYTUTC-7Whitehorse, Fort St. John, Creston, Dawson8h behind (Mar 29 – Oct 25)7h behind (Oct 25 – Mar 29)–Convert GMT to YT
Greenwich Mean Time (GMT/BST)Central TimeCST/CDTUTC-6 / UTC-5Chicago, Houston, San Antonio, Dallas, Reynosa, Heroica Matamoros, Nuevo Laredo, Ciudad Acuña, Winnipeg, Brandon, Steinbach, Kenora5h behind (Mar 8 – Mar 29)6h behind (Mar 29 – Oct 25)5h behind (Oct 25 – Nov 1)6h behind (Nov 1 – Mar 8)–Convert GMT to CST
Greenwich Mean Time (GMT/BST)Central Time – Mexico CityCSTUTC-6Mexico City, Iztapalapa, Puebla, Ecatepec de Morelos, Belize City, San Pedro, Orange Walk, Belmopan, Guatemala City, Villa Nueva, Mixco, Cobán, Managua, León, Masaya, Chinandega, San José, Limón, San Francisco, Alajuela, San Salvador, Soyapango, San Miguel, Santa Ana, Saskatoon, Regina, Prince Albert, Moose Jaw, Tegucigalpa, San Pedro Sula, La Ceiba, Choloma7h behind (Mar 29 – Oct 25)6h behind (Oct 25 – Mar 29)–Convert GMT to CST
Greenwich Mean Time (GMT/BST)Easter Island TimeEAST/EADTUTC-6 / UTC-5Easter6h behind (Mar 29 – Apr 4)7h behind (Apr 4 – Sep 5)6h behind (Sep 5 – Oct 25)5h behind (Oct 25 – Mar 29)–Convert GMT to EAST
Greenwich Mean Time (GMT/BST)Galapagos TimeGALTUTC-6Galapagos7h behind (Mar 29 – Oct 25)6h behind (Oct 25 – Mar 29)–Convert GMT to GALT
Greenwich Mean Time (GMT/BST)Acre TimeACTUTC-5Rio Branco, Cruzeiro do Sul, Tarauacá, Sena Madureira6h behind (Mar 29 – Oct 25)5h behind (Oct 25 – Mar 29)–Convert GMT to ACT
Greenwich Mean Time (GMT/BST)Colombia TimeCOTUTC-5Bogotá, Cali, Medellín, Barranquilla6h behind (Mar 29 – Oct 25)5h behind (Oct 25 – Mar 29)–Convert GMT to COT
Greenwich Mean Time (GMT/BST)Cuba TimeCST/CDTUTC-5 / UTC-4Havana, Santiago de Cuba, Camagüey, Holguín4h behind (Mar 8 – Mar 29)5h behind (Mar 29 – Oct 25)4h behind (Oct 25 – Nov 1)5h behind (Nov 1 – Mar 8)–Convert GMT to CST
Greenwich Mean Time (GMT/BST)Eastern TimeEST/EDTUTC-5 / UTC-4New York City, Brooklyn, Queens, Philadelphia, Nassau, Lucaya, Freeport, Killarney, Port-au-Prince, Carrefour, Delmas, Port-de-Paix, Providenciales, Cockburn Town, Toronto, Montréal, Ottawa, Mississauga4h behind (Mar 8 – Mar 29)5h behind (Mar 29 – Oct 25)4h behind (Oct 25 – Nov 1)5h behind (Nov 1 – Mar 8)–Convert GMT to EST
Greenwich Mean Time (GMT/BST)Eastern Time – PanamaESTUTC-5Panamá, San Miguelito, Juan Díaz, David, Atikokan, Cancún, Chetumal, Playa del Carmen, Cozumel, George Town, West Bay, Kingston, New Kingston, Spanish Town, Portmore6h behind (Mar 29 – Oct 25)5h behind (Oct 25 – Mar 29)–Convert GMT to EST
Greenwich Mean Time (GMT/BST)Ecuador TimeECTUTC-5Quito, Guayaquil, Cuenca, Santo Domingo de los Colorados6h behind (Mar 29 – Oct 25)5h behind (Oct 25 – Mar 29)–Convert GMT to ECT
Greenwich Mean Time (GMT/BST)Peru TimePETUTC-5Lima, Callao, Arequipa, Trujillo6h behind (Mar 29 – Oct 25)5h behind (Oct 25 – Mar 29)–Convert GMT to PET
Greenwich Mean Time (GMT/BST)Amazon TimeAMTUTC-4Manaus, Campo Grande, Cuiabá, Porto Velho5h behind (Mar 29 – Oct 25)4h behind (Oct 25 – Mar 29)–Convert GMT to AMT
Greenwich Mean Time (GMT/BST)Atlantic TimeAST/ADTUTC-4 / UTC-3Halifax, Sydney, Dartmouth, Moncton, Hamilton, Thule3h behind (Mar 8 – Mar 29)4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Nov 1)4h behind (Nov 1 – Mar 8)–Convert GMT to AST
Greenwich Mean Time (GMT/BST)Atlantic Time – Santo DomingoASTUTC-4Santo Domingo, Santiago de los Caballeros, Santo Domingo Oeste, Santo Domingo Este, Basseterre, Blanc-Sablon, Brades, Plymouth, Bridgetown, Chaguanas, Mon Repos, San Fernando, Port of Spain, Fort-de-France, Le Lamentin, Le Robert, Sainte-Marie, Gros Islet, Castries, Gustavia, Kingstown, Calliaqua, Kralendijk, Les Abymes, Baie-Mahault, Le Gosier, Petit-Bourg, Marigot, Oranjestad, Noord, Tanki Leendert, San Nicolas, Philipsburg, Road Town, Roseau, Saint Croix, Charlotte Amalie, Saint George's, Saint John’s, San Juan, Bayamón, Carolina, Ponce, The Valley, Willemstad, Bandariba5h behind (Mar 29 – Oct 25)4h behind (Oct 25 – Mar 29)–Convert GMT to AST
Greenwich Mean Time (GMT/BST)Bolivia TimeBOTUTC-4La Paz, Santa Cruz de la Sierra, Cochabamba, Sucre5h behind (Mar 29 – Oct 25)4h behind (Oct 25 – Mar 29)–Convert GMT to BOT
Greenwich Mean Time (GMT/BST)Chile TimeCLTUTC-4 / UTC-3Santiago, Puente Alto, Maipú, Antofagasta4h behind (Mar 29 – Apr 4)5h behind (Apr 4 – Sep 6)4h behind (Sep 6 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to CLT
Greenwich Mean Time (GMT/BST)Guyana TimeGYTUTC-4Georgetown, Linden, New Amsterdam5h behind (Mar 29 – Oct 25)4h behind (Oct 25 – Mar 29)–Convert GMT to GYT
Greenwich Mean Time (GMT/BST)Venezuela TimeVETUTC-4Caracas, Maracaibo, Valencia, Barquisimeto5h behind (Mar 29 – Oct 25)4h behind (Oct 25 – Mar 29)–Convert GMT to VET
Greenwich Mean Time (GMT/BST)Newfoundland TimeNST/NDTUTC-3:30 / UTC-2:30St. John's, Mount Pearl, Paradise, Corner Brook2h 30m behind (Mar 8 – Mar 29)3h 30m behind (Mar 29 – Oct 25)2h 30m behind (Oct 25 – Nov 1)3h 30m behind (Nov 1 – Mar 8)–Convert GMT to NST
Greenwich Mean Time (GMT/BST)Argentina TimeARTUTC-3Buenos Aires, Córdoba, Rosario, Mar del Plata4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to ART
Greenwich Mean Time (GMT/BST)Brasilia TimeBRTUTC-3São Paulo, Rio de Janeiro, Belo Horizonte, Salvador4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to BRT
Greenwich Mean Time (GMT/BST)Chile Time – Punta ArenasCLTUTC-3Punta Arenas, Coyhaique, Puerto Natales, Puerto Aysén, Palmer, Rothera4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to CLT
Greenwich Mean Time (GMT/BST)Falkland Islands TimeFKSTUTC-3Stanley4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to FKST
Greenwich Mean Time (GMT/BST)French Guiana TimeGFTUTC-3Cayenne, Matoury, Saint-Laurent-du-Maroni, Kourou4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to GFT
Greenwich Mean Time (GMT/BST)Paraguay TimePYTUTC-3Asunción, Ciudad del Este, San Lorenzo, Capiatá4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to PYT
Greenwich Mean Time (GMT/BST)St. Pierre & Miquelon TimePMUTC-3 / UTC-2Saint-Pierre2h behind (Mar 8 – Mar 29)3h behind (Mar 29 – Oct 25)2h behind (Oct 25 – Nov 1)3h behind (Nov 1 – Mar 8)–Convert GMT to PM
Greenwich Mean Time (GMT/BST)Suriname TimeSRTUTC-3Paramaribo, Blauwgrond, Rainville, Flora4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to SRT
Greenwich Mean Time (GMT/BST)Uruguay TimeUYTUTC-3Montevideo, Salto, Paysandú, Las Piedras4h behind (Mar 29 – Oct 25)3h behind (Oct 25 – Mar 29)–Convert GMT to UYT
Greenwich Mean Time (GMT/BST)Fernando de Noronha TimeFNTUTC-2Noronha3h behind (Mar 29 – Oct 25)2h behind (Oct 25 – Mar 29)–Convert GMT to FNT
Greenwich Mean Time (GMT/BST)Greenland TimeUTC-2UTC-2 / UTC-1Nuuk, Scoresbysund2h behind–Convert GMT to Nuuk
Greenwich Mean Time (GMT/BST)South Georgia TimeGSTUTC-2Grytviken3h behind (Mar 29 – Oct 25)2h behind (Oct 25 – Mar 29)–Convert GMT to GST
Greenwich Mean Time (GMT/BST)Azores TimeAZOTUTC-1 / UTC+0Ponta Delgada1h behind–Convert GMT to AZOT
Greenwich Mean Time (GMT/BST)Cape Verde TimeCVTUTC-1Praia, Mindelo, Espargos, Assomada2h behind (Mar 29 – Oct 25)1h behind (Oct 25 – Mar 29)–Convert GMT to CVT
Greenwich Mean Time (GMT/BST)Coordinated Universal TimeUTCUTC+0UTC1h behind (Mar 29 – Oct 25)Same time (Oct 25 – Mar 29)–Convert GMT to UTC
Greenwich Mean Time (GMT/BST)Greenwich Mean Time – AccraGMTUTC+0Kumasi, Accra, Tamale, Takoradi, Abidjan, Abobo, Bouaké, Korhogo, Bamako, Sikasso, Koutiala, Ségou, Bissau, Gabú, Bafatá, Xitole, Conakry, Camayenne, Nzérékoré, Kankan, Dakar, Touba, Pikine, Guédiawaye, Danmarkshavn, Freetown, Bo, Kenema, Koidu, Jamestown, Lomé, Sokodé, Kara, Atakpamé, Monrovia, Gbarnga, Buchanan, Ganta, Nouakchott, Nouadhibou, Kiffa, Dar Naim, Ouagadougou, Bobo-Dioulasso, Koudougou, Saaba, Reykjavík, Kópavogur, Hafnarfjörður, Reykjanesbær, São Tomé, Serekunda, Brikama, Bununka Kunda, Sukuta1h behind (Mar 29 – Oct 25)Same time (Oct 25 – Mar 29)–Convert GMT to GMT
Greenwich Mean Time (GMT/BST)Greenwich Mean Time – TrollGMTUTC+0 / UTC+2Troll1h ahead (Mar 29 – Oct 25)Same time (Oct 25 – Mar 29)–Convert GMT to GMT
Greenwich Mean Time (GMT/BST)Western European TimeWET/WESTUTC+0 / UTC+1Lisbon, Porto, Amadora, Braga, Las Palmas de Gran Canaria, Santa Cruz de Tenerife, La Laguna, Telde, TórshavnSame time–Convert GMT to WET
Greenwich Mean Time (GMT/BST)Western European Time – CasablancaWETUTC+0 / UTC+1Casablanca, Rabat, Fes, Tangier, Laayoune, Dakhla, Boujdour1h ahead (until Feb 15)Same time (Feb 15 – Mar 22)1h ahead (Mar 22 – Mar 29)Same time (Mar 29 – Sep 20)1h behind (Sep 20 – Oct 25)Same time (from Oct 25)–Convert GMT to WET
Greenwich Mean Time (GMT/BST)Central European TimeCET/CESTUTC+1 / UTC+2Paris, Marseille, Lyon, Toulouse, Andorra la Vella, les Escaldes, Belgrade, Niš, Novi Sad, Zemun, Berlin, Hamburg, Munich, Köln, Bratislava, Košice, Petržalka, Nitra, Brussels, Antwerpen, Gent, Charleroi, Budapest, Debrecen, Szeged, Miskolc, Copenhagen, Århus, Odense, Aalborg, Gibraltar, Ljubljana, Maribor, Celje, Kranj, Longyearbyen, Luxembourg, Esch-sur-Alzette, Dudelange, Madrid, Barcelona, Valencia, Zaragoza, Monaco, Monte-Carlo, Oslo, Bergen, Trondheim, Stavanger, Podgorica, Nikšić, Herceg Novi, Pljevlja, Prague, Brno, Ostrava, Pilsen, Rome, Milan, Naples, Turin, Rotterdam, Amsterdam, The Hague, Utrecht, San Marino, San Pawl il-Baħar, Birkirkara, Mosta, Sliema, Sarajevo, Banja Luka, Zenica, Tuzla, Skopje, Kumanovo, Prilep, Bitola, Stockholm, Göteborg, Malmö, Uppsala, Tirana, Durrës, Vlorë, Elbasan, Vaduz, Vatican City, Vienna, Graz, Linz, Favoriten, Warsaw, Łódź, Kraków, Wrocław, Zagreb, Split, Rijeka, Osijek, Zürich, Genève, Basel, Lausanne1h ahead–Convert GMT to CET
Greenwich Mean Time (GMT/BST)Central European Time – AlgiersCETUTC+1Algiers, Oran, Constantine, Annaba, Tunis, Sfax, Sousse, KairouanSame time (Mar 29 – Oct 25)1h ahead (Oct 25 – Mar 29)–Convert GMT to CET
Greenwich Mean Time (GMT/BST)West Africa TimeWATUTC+1Lagos, Kano, Ibadan, Abuja, Bangui, Bimbo, Bégoua, Carnot, Bata, Malabo, Ebebiyin, Brazzaville, Pointe-Noire, Dolisie, Nkayi, Cotonou, Abomey-Calavi, Porto-Novo, Parakou, Douala, Yaoundé, Bamenda, Bafoussam, Kinshasa, Kikwit, Masina, Mbandaka, Libreville, Port-Gentil, Franceville, Owendo, Luanda, Lubango, Huambo, Benguela, N'Djamena, Moundou, Abéché, Sarh, Niamey, Maradi, Zinder, TahouaSame time (Mar 29 – Oct 25)1h ahead (Oct 25 – Mar 29)–Convert GMT to WAT
Greenwich Mean Time (GMT/BST)Central Africa TimeCATUTC+2Lilongwe, Blantyre, Mzuzu, Zomba, Bujumbura, Gitega, Ngozi, Rumonge, Gaborone, Francistown, Mogoditshane, Maun, Harare, Bulawayo, Chitungwiza, Mutare, Juba, Winejok, Yei, Malakal, Khartoum, Omdurman, Khartoum North, Nyala, Kigali, Gisenyi, Musanze, Nyagatare, Lubumbashi, Mbuji-Mayi, Kananga, Kisangani, Lusaka, Kitwe, Ndola, Chipata, Maputo, Matola, Nampula, Beira, Windhoek, Rundu, Walvis Bay, Swakopmund1h ahead (Mar 29 – Oct 25)2h ahead (Oct 25 – Mar 29)–Convert GMT to CAT
Greenwich Mean Time (GMT/BST)Eastern European TimeEET/EESTUTC+2 / UTC+3Athens, Thessaloníki, Pátra, Piraeus, Bucharest, Sector 3, Iaşi, Sector 6, Chisinau, Tiraspol, Bălţi, Bender, Helsinki, Espoo, Tampere, Vantaa, Kyiv, Kharkiv, Odesa, Dnipro, Mariehamn, Nicosia, Limassol, Larnaca, Stróvolos, Riga, Daugavpils, Liepāja, Jelgava, Sofia, Plovdiv, Varna, Burgas, Tallinn, Tartu, Narva, Pärnu, Vilnius, Kaunas, Klaipėda, Šiauliai2h ahead–Convert GMT to EET
Greenwich Mean Time (GMT/BST)Eastern European Time – BeirutEET/EESTUTC+2 / UTC+3Beirut, Ra’s Bayrūt, Tripoli, Sidon3h ahead (Mar 29 – Mar 29)2h ahead (Mar 29 – Oct 24)1h ahead (Oct 24 – Oct 25)2h ahead (Oct 25 – Mar 29)–Convert GMT to EET
Greenwich Mean Time (GMT/BST)Eastern European Time – CairoEET/EESTUTC+2 / UTC+3Cairo, Alexandria, Giza, Shubrā al Khaymah1h ahead (Mar 29 – Apr 24)2h ahead (Apr 24 – Oct 25)3h ahead (Oct 25 – Oct 29)2h ahead (Oct 29 – Mar 29)–Convert GMT to EET
Greenwich Mean Time (GMT/BST)Eastern European Time – HebronEET/EESTUTC+2 / UTC+3East Jerusalem, Gaza, Khān Yūnis, Jabālyā3h ahead (Mar 28 – Mar 29)2h ahead (Mar 29 – Oct 24)1h ahead (Oct 24 – Oct 25)2h ahead (Oct 25 – Mar 28)–Convert GMT to EET
Greenwich Mean Time (GMT/BST)Eastern European Time – TripoliEETUTC+2Tripoli, Benghazi, Misratah, Zliten, Kaliningrad, Chernyakhovsk, Sovetsk, Baltiysk1h ahead (Mar 29 – Oct 25)2h ahead (Oct 25 – Mar 29)–Convert GMT to EET
Greenwich Mean Time (GMT/BST)Israel TimeIST/IDTUTC+2 / UTC+3Jerusalem, Tel Aviv, West Jerusalem, Haifa3h ahead (Mar 27 – Mar 29)2h ahead (Mar 29 – Oct 25)1h ahead (Oct 25 – Oct 25)2h ahead (Oct 25 – Mar 27)–Convert GMT to IST
Greenwich Mean Time (GMT/BST)South Africa TimeSASTUTC+2Johannesburg, Cape Town, Durban, Pretoria, Manzini, Mbabane, Lobamba, Maseru, Maputsoe, Mohale's Hoek, Mafeteng1h ahead (Mar 29 – Oct 25)2h ahead (Oct 25 – Mar 29)–Convert GMT to SAST
Greenwich Mean Time (GMT/BST)Arabian TimeASTUTC+3Baghdad, Al Mawşil al Jadīdah, Al Başrah al Qadīmah, Mosul, Al Aḩmadī, Ḩawallī, As Sālimīyah, Şabāḩ as Sālim, Al Muharraq, Manama, Madīnat Ḩamad, Ar Rifā‘, Doha, Ar Rayyān, Al Maţār al ‘Atīq, Al Manşūrah, Jeddah, Riyadh, Makkah, Madinah, Sanaa, Aden, Taiz, Ibb2h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Mar 29)–Convert GMT to AST
Greenwich Mean Time (GMT/BST)East Africa TimeEATUTC+3Nairobi, Kakamega, Mombasa, Nakuru, Addis Ababa, Jijiga, Gonder, Mek'ele, Antananarivo, Toamasina, Antsirabe, Mahajanga, Asmara, Keren, Himora, Massawa, Dar es Salaam, Mwanza, Dodoma, Zanzibar, Djibouti, Ali Sabih, Dikhil, Tadjoura, Kampala, Nansana, Kira, Bunamwaya, Mamoudzou, Koungou, Labattoir, Kaouéni, Mogadishu, Borama, Hargeysa, Berbera, Moroni, Moutsamoudou, Fomboni2h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Mar 29)–Convert GMT to EAT
Greenwich Mean Time (GMT/BST)Jordan TimeUTC+3UTC+3Amman, Zarqa, Irbid, Russeifa2h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Mar 29)–Convert GMT to Amman
Greenwich Mean Time (GMT/BST)Moscow TimeMSKUTC+3Moscow, Saint Petersburg, Nizhniy Novgorod, Kazan, Minsk, Homyel', Hrodna, Vitebsk, Sevastopol, Simferopol, Kerch, Yevpatoriya2h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Mar 29)–Convert GMT to MSK
Greenwich Mean Time (GMT/BST)Syowa TimeSYOTUTC+3Syowa2h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Mar 29)–Convert GMT to SYOT
Greenwich Mean Time (GMT/BST)Syria TimeUTC+3UTC+3Aleppo, Damascus, Homs, Latakia2h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Mar 29)–Convert GMT to Aleppo
Greenwich Mean Time (GMT/BST)Turkey TimeTRTUTC+3Istanbul, Ankara, Bursa, İzmir2h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Mar 29)–Convert GMT to TRT
Greenwich Mean Time (GMT/BST)Iran TimeIRSTUTC+3:30Tehran, Mashhad, Isfahan, Karaj2h 30m ahead (Mar 29 – Oct 25)3h 30m ahead (Oct 25 – Mar 29)–Convert GMT to IRST
Greenwich Mean Time (GMT/BST)Armenia TimeAMTUTC+4Yerevan, Malatia-Sebastia, Shengavit, Nor Nork3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to AMT
Greenwich Mean Time (GMT/BST)Azerbaijan TimeAZTUTC+4Baku, Sumqayıt, Ganja, Lankaran3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to AZT
Greenwich Mean Time (GMT/BST)Georgia TimeGETUTC+4Tbilisi, Batumi, Kutaisi, Rustavi3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to GET
Greenwich Mean Time (GMT/BST)Gulf TimeGSTUTC+4Dubai, Abu Dhabi, Sharjah, Al Ain City, Muscat, Seeb, Bawshar, ‘Ibrī3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to GST
Greenwich Mean Time (GMT/BST)Mauritius TimeMUTUTC+4Port Louis, Vacoas, Beau Bassin-Rose Hill, Curepipe3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to MUT
Greenwich Mean Time (GMT/BST)Réunion TimeRETUTC+4Saint-Denis, Saint-Paul, Saint-Pierre, Le Tampon3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to RET
Greenwich Mean Time (GMT/BST)Samara TimeSAMTUTC+4Samara, Saratov, Tolyatti, Izhevsk3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to SAMT
Greenwich Mean Time (GMT/BST)Seychelles TimeSCTUTC+4Victoria3h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Mar 29)–Convert GMT to SCT
Greenwich Mean Time (GMT/BST)Afghanistan TimeAFTUTC+4:30Kabul, Herāt, Mazār-e Sharīf, Kandahār3h 30m ahead (Mar 29 – Oct 25)4h 30m ahead (Oct 25 – Mar 29)–Convert GMT to AFT
Greenwich Mean Time (GMT/BST)French Southern & Antarctic TimeFSATUTC+5Port-aux-Français4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to FSAT
Greenwich Mean Time (GMT/BST)Kazakhstan TimeUTC+5UTC+5Almaty, Shymkent, Aktobe, Karagandy4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to Almaty
Greenwich Mean Time (GMT/BST)Maldives TimeMVTUTC+5Male4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to MVT
Greenwich Mean Time (GMT/BST)Mawson TimeMAWTUTC+5Mawson, Vostok4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to MAWT
Greenwich Mean Time (GMT/BST)Pakistan TimePKTUTC+5Lahore, Karachi, Peshawar, Faisalabad4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to PKT
Greenwich Mean Time (GMT/BST)Tajikistan TimeTJTUTC+5Dushanbe, Isfara, Istaravshan, Kŭlob4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to TJT
Greenwich Mean Time (GMT/BST)Turkmenistan TimeTMTUTC+5Ashgabat, Türkmenabat, Daşoguz, Mary4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to TMT
Greenwich Mean Time (GMT/BST)Uzbekistan TimeUZTUTC+5Tashkent, Andijon, Namangan, Samarkand4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to UZT
Greenwich Mean Time (GMT/BST)Yekaterinburg TimeYEKTUTC+5Yekaterinburg, Chelyabinsk, Ufa, Perm4h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Mar 29)–Convert GMT to YEKT
Greenwich Mean Time (GMT/BST)India TimeISTUTC+5:30Mumbai, Delhi, Bengaluru, Hyderabad, Colombo, Dehiwala-Mount Lavinia, Maharagama, Jaffna4h 30m ahead (Mar 29 – Oct 25)5h 30m ahead (Oct 25 – Mar 29)–Convert GMT to IST
Greenwich Mean Time (GMT/BST)Nepal TimeNPTUTC+5:45Kathmandu, Pokhara, Bharatpur, Pātan4h 45m ahead (Mar 29 – Oct 25)5h 45m ahead (Oct 25 – Mar 29)–Convert GMT to NPT
Greenwich Mean Time (GMT/BST)Bangladesh TimeBSTUTC+6Dhaka, Chattogram, Gazipur, Khulna5h ahead (Mar 29 – Oct 25)6h ahead (Oct 25 – Mar 29)–Convert GMT to BST
Greenwich Mean Time (GMT/BST)Bhutan TimeBTTUTC+6Thimphu, Phuntsholing, Tsirang, Punākha5h ahead (Mar 29 – Oct 25)6h ahead (Oct 25 – Mar 29)–Convert GMT to BTT
Greenwich Mean Time (GMT/BST)China Time – UrumqiCSTUTC+6Ürümqi, Shihezi, Korla, Aqsu5h ahead (Mar 29 – Oct 25)6h ahead (Oct 25 – Mar 29)–Convert GMT to CST
Greenwich Mean Time (GMT/BST)Indian Ocean TimeIOTUTC+6Chagos5h ahead (Mar 29 – Oct 25)6h ahead (Oct 25 – Mar 29)–Convert GMT to IOT
Greenwich Mean Time (GMT/BST)Kyrgyzstan TimeKGTUTC+6Bishkek, Osh, Jalal-Abad, Karakol5h ahead (Mar 29 – Oct 25)6h ahead (Oct 25 – Mar 29)–Convert GMT to KGT
Greenwich Mean Time (GMT/BST)Omsk TimeOMSTUTC+6Omsk, Tara, Kalachinsk, Isil’kul’5h ahead (Mar 29 – Oct 25)6h ahead (Oct 25 – Mar 29)–Convert GMT to OMST
Greenwich Mean Time (GMT/BST)Cocos Islands TimeCCTUTC+6:30West Island5h 30m ahead (Mar 29 – Oct 25)6h 30m ahead (Oct 25 – Mar 29)–Convert GMT to CCT
Greenwich Mean Time (GMT/BST)Myanmar TimeMMTUTC+6:30Yangon, Mandalay, Nay Pyi Taw, Hlaingthaya Township5h 30m ahead (Mar 29 – Oct 25)6h 30m ahead (Oct 25 – Mar 29)–Convert GMT to MMT
Greenwich Mean Time (GMT/BST)Christmas Island TimeCXTUTC+7Flying Fish Cove6h ahead (Mar 29 – Oct 25)7h ahead (Oct 25 – Mar 29)–Convert GMT to CXT
Greenwich Mean Time (GMT/BST)Davis TimeDAVTUTC+7Davis6h ahead (Mar 29 – Oct 25)7h ahead (Oct 25 – Mar 29)–Convert GMT to DAVT
Greenwich Mean Time (GMT/BST)Hovd TimeHOVTUTC+7Ulaangom, Khovd, Ölgii, Altai6h ahead (Mar 29 – Oct 25)7h ahead (Oct 25 – Mar 29)–Convert GMT to HOVT
Greenwich Mean Time (GMT/BST)Indochina TimeICTUTC+7Bangkok, Samut Prakan, Mueang Nonthaburi, Chon Buri, Ho Chi Minh City, Cần Thơ, Da Nang, Biên Hòa, Phnom Penh, Takeo, Siem Reap, Battambang, Vientiane, Savannakhet, Pakse, Thakhèk6h ahead (Mar 29 – Oct 25)7h ahead (Oct 25 – Mar 29)–Convert GMT to ICT
Greenwich Mean Time (GMT/BST)Novosibirsk TimeNOVTUTC+7Novosibirsk, Krasnoyarsk, Barnaul, Tomsk6h ahead (Mar 29 – Oct 25)7h ahead (Oct 25 – Mar 29)–Convert GMT to NOVT
Greenwich Mean Time (GMT/BST)Western Indonesia TimeWIBUTC+7Jakarta, Surabaya, Bekasi, Bandung6h ahead (Mar 29 – Oct 25)7h ahead (Oct 25 – Mar 29)–Convert GMT to WIB
Greenwich Mean Time (GMT/BST)Australian Western TimeAWSTUTC+8Perth, Mandurah, Bunbury, Geraldton, Casey7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to AWST
Greenwich Mean Time (GMT/BST)Brunei TimeUTC+8UTC+8Bandar Seri Begawan, Sengkurong, Mentiri, Kuala Belait7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to Bandar Seri Begawan
Greenwich Mean Time (GMT/BST)Central Indonesia TimeWITAUTC+8Makassar, Samarinda, Denpasar, Balikpapan7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to WITA
Greenwich Mean Time (GMT/BST)China TimeCSTUTC+8Shanghai, Beijing, Shenzhen, Guangzhou, Macau, Taipa, Sé, Luhuan7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to CST
Greenwich Mean Time (GMT/BST)Hong Kong TimeHKTUTC+8Hong Kong, New Territories, Kowloon, Hong Kong Island7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to HKT
Greenwich Mean Time (GMT/BST)Irkutsk TimeIRKTUTC+8Irkutsk, Ulan-Ude, Bratsk, Angarsk7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to IRKT
Greenwich Mean Time (GMT/BST)Malaysia TimeMYTUTC+8Kuala Lumpur, Johor Bahru, Kampung Baru Subang, Petaling Jaya7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to MYT
Greenwich Mean Time (GMT/BST)Philippine TimePHTUTC+8Quezon City, Davao, Caloocan City, Manila7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to PHT
Greenwich Mean Time (GMT/BST)Singapore TimeSGTUTC+8Singapore, Ulu Bedok, Bedok New Town, Tampines Estate7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to SGT
Greenwich Mean Time (GMT/BST)Taiwan TimeUTC+8UTC+8Taipei, New Taipei City, Taichung, Kaohsiung7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to Taipei
Greenwich Mean Time (GMT/BST)Ulaanbaatar TimeULATUTC+8Ulan Bator, Erdenet, Darhan, Choibalsan7h ahead (Mar 29 – Oct 25)8h ahead (Oct 25 – Mar 29)–Convert GMT to ULAT
Greenwich Mean Time (GMT/BST)Australian Central Western TimeACWSTUTC+8:45Eucla7h 45m ahead (Mar 29 – Oct 25)8h 45m ahead (Oct 25 – Mar 29)–Convert GMT to ACWST
Greenwich Mean Time (GMT/BST)Eastern Indonesia TimeWITUTC+9Jayapura, Ambon, Sorong, Ternate8h ahead (Mar 29 – Oct 25)9h ahead (Oct 25 – Mar 29)–Convert GMT to WIT
Greenwich Mean Time (GMT/BST)Japan TimeJSTUTC+9Tokyo, Yokohama, Osaka, Nagoya8h ahead (Mar 29 – Oct 25)9h ahead (Oct 25 – Mar 29)–Convert GMT to JST
Greenwich Mean Time (GMT/BST)Korean TimeKSTUTC+9Seoul, Busan, Incheon, Daegu, Pyongyang, Hamhŭng, Namp’o, Sunch’ŏn8h ahead (Mar 29 – Oct 25)9h ahead (Oct 25 – Mar 29)–Convert GMT to KST
Greenwich Mean Time (GMT/BST)Palau TimePWTUTC+9Ngerulmud8h ahead (Mar 29 – Oct 25)9h ahead (Oct 25 – Mar 29)–Convert GMT to PWT
Greenwich Mean Time (GMT/BST)Timor-Leste TimeUTC+9UTC+9Dili, Maliana, Suai, Likisá8h ahead (Mar 29 – Oct 25)9h ahead (Oct 25 – Mar 29)–Convert GMT to Dili
Greenwich Mean Time (GMT/BST)Yakutsk TimeYAKTUTC+9Chita, Yakutsk, Blagoveshchensk, Belogorsk8h ahead (Mar 29 – Oct 25)9h ahead (Oct 25 – Mar 29)–Convert GMT to YAKT
Greenwich Mean Time (GMT/BST)Australian Central TimeACST/ACDTUTC+9:30 / UTC+10:30Adelaide, Adelaide Hills, Mount Gambier, Morphett Vale9h 30m ahead (Mar 29 – Apr 5)8h 30m ahead (Apr 5 – Oct 4)9h 30m ahead (Oct 4 – Oct 25)10h 30m ahead (Oct 25 – Mar 29)–Convert GMT to ACST
Greenwich Mean Time (GMT/BST)Australian Central Time – DarwinACSTUTC+9:30Darwin, Palmerston, Alice Springs8h 30m ahead (Mar 29 – Oct 25)9h 30m ahead (Oct 25 – Mar 29)–Convert GMT to ACST
Greenwich Mean Time (GMT/BST)Australian Eastern TimeAEST/AEDTUTC+10 / UTC+11Sydney, Melbourne, Newcastle, Canberra10h ahead (Mar 29 – Apr 5)9h ahead (Apr 5 – Oct 4)10h ahead (Oct 4 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to AEST
Greenwich Mean Time (GMT/BST)Australian Eastern Time – BrisbaneAESTUTC+10Brisbane, Gold Coast, Sunshine Coast, Logan City9h ahead (Mar 29 – Oct 25)10h ahead (Oct 25 – Mar 29)–Convert GMT to AEST
Greenwich Mean Time (GMT/BST)Chamorro TimeChSTUTC+10Dededo Village, Yigo Village, Tamuning-Tumon-Harmon Village, Tamuning, Saipan9h ahead (Mar 29 – Oct 25)10h ahead (Oct 25 – Mar 29)–Convert GMT to ChST
Greenwich Mean Time (GMT/BST)Chuuk TimeCHUTUTC+10Chuuk9h ahead (Mar 29 – Oct 25)10h ahead (Oct 25 – Mar 29)–Convert GMT to CHUT
Greenwich Mean Time (GMT/BST)Dumont d’Urville TimeUTC+10UTC+10DumontDUrville9h ahead (Mar 29 – Oct 25)10h ahead (Oct 25 – Mar 29)–Convert GMT to DumontDUrville
Greenwich Mean Time (GMT/BST)Papua New Guinea TimePGTUTC+10Port Moresby, Lae, Mount Hagen, Popondetta9h ahead (Mar 29 – Oct 25)10h ahead (Oct 25 – Mar 29)–Convert GMT to PGT
Greenwich Mean Time (GMT/BST)Vladivostok TimeVLATUTC+10Khabarovsk, Vladivostok, Khabarovsk Vtoroy, Komsomolsk-on-Amur9h ahead (Mar 29 – Oct 25)10h ahead (Oct 25 – Mar 29)–Convert GMT to VLAT
Greenwich Mean Time (GMT/BST)Lord Howe TimeLHST/LHDTUTC+10:30 / UTC+11Lord Howe10h ahead (Mar 29 – Apr 5)9h 30m ahead (Apr 5 – Oct 4)10h ahead (Oct 4 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to LHST
Greenwich Mean Time (GMT/BST)Bougainville TimeBSTUTC+11Arawa10h ahead (Mar 29 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to BST
Greenwich Mean Time (GMT/BST)Kosrae TimeKOSTUTC+11Kosrae, Palikir10h ahead (Mar 29 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to KOST
Greenwich Mean Time (GMT/BST)New Caledonia TimeNCTUTC+11Nouméa, Mont-Dore, Dumbéa10h ahead (Mar 29 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to NCT
Greenwich Mean Time (GMT/BST)Norfolk Island TimeNFTUTC+11 / UTC+12Kingston11h ahead (Mar 29 – Apr 5)10h ahead (Apr 5 – Oct 4)11h ahead (Oct 4 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to NFT
Greenwich Mean Time (GMT/BST)Sakhalin TimeSAKTUTC+11Yuzhno-Sakhalinsk, Magadan, Korsakov, Kholmsk10h ahead (Mar 29 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to SAKT
Greenwich Mean Time (GMT/BST)Solomon Islands TimeSBTUTC+11Honiara, Panatina, Nggosi, Tandai10h ahead (Mar 29 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to SBT
Greenwich Mean Time (GMT/BST)Vanuatu TimeVUTUTC+11Port-Vila10h ahead (Mar 29 – Oct 25)11h ahead (Oct 25 – Mar 29)–Convert GMT to VUT
Greenwich Mean Time (GMT/BST)Fiji TimeFJTUTC+12Nasinu, Suva, Lautoka, Nadi11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to FJT
Greenwich Mean Time (GMT/BST)Gilbert Islands TimeGILTUTC+12Tarawa11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to GILT
Greenwich Mean Time (GMT/BST)Kamchatka TimePETTUTC+12Petropavlovsk-Kamchatsky, Yelizovo, Vilyuchinsk, Anadyr11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to PETT
Greenwich Mean Time (GMT/BST)Marshall Islands TimeMHTUTC+12Majuro, Kwajalein11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to MHT
Greenwich Mean Time (GMT/BST)Nauru TimeNRTUTC+12Yaren11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to NRT
Greenwich Mean Time (GMT/BST)New Zealand TimeNZST/NZDTUTC+12 / UTC+13Auckland, Christchurch, Wellington, Manukau City, McMurdo12h ahead (Mar 29 – Apr 5)11h ahead (Apr 5 – Sep 27)12h ahead (Sep 27 – Oct 25)13h ahead (Oct 25 – Mar 29)–Convert GMT to NZST
Greenwich Mean Time (GMT/BST)Tuvalu TimeTVTUTC+12Funafuti11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to TVT
Greenwich Mean Time (GMT/BST)Wake Island TimeWAKTUTC+12Wake11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to WAKT
Greenwich Mean Time (GMT/BST)Wallis & Futuna TimeWFTUTC+12Mata-Utu11h ahead (Mar 29 – Oct 25)12h ahead (Oct 25 – Mar 29)–Convert GMT to WFT
Greenwich Mean Time (GMT/BST)Chatham TimeCHAST/CHADTUTC+12:45 / UTC+13:45Chatham12h 45m ahead (Mar 29 – Apr 5)11h 45m ahead (Apr 5 – Sep 27)12h 45m ahead (Sep 27 – Oct 25)13h 45m ahead (Oct 25 – Mar 29)–Convert GMT to CHAST
Greenwich Mean Time (GMT/BST)Phoenix Islands TimePHOTUTC+13Kanton12h ahead (Mar 29 – Oct 25)13h ahead (Oct 25 – Mar 29)–Convert GMT to PHOT
Greenwich Mean Time (GMT/BST)Samoa TimeSSTUTC+13Apia12h ahead (Mar 29 – Oct 25)13h ahead (Oct 25 – Mar 29)–Convert GMT to SST
Greenwich Mean Time (GMT/BST)Tokelau TimeTKTUTC+13Fakaofo12h ahead (Mar 29 – Oct 25)13h ahead (Oct 25 – Mar 29)–Convert GMT to TKT
Greenwich Mean Time (GMT/BST)Tonga TimeTOTUTC+13Nuku‘alofa12h ahead (Mar 29 – Oct 25)13h ahead (Oct 25 – Mar 29)–Convert GMT to TOT
Greenwich Mean Time (GMT/BST)Line Islands TimeLINTUTC+14Kiritimati13h ahead (Mar 29 – Oct 25)14h ahead (Oct 25 – Mar 29)–Convert GMT to LINT

Time zone details

Greenwich Mean Time

Guernsey, Ireland and 3 more countries

Abbreviation
GMT/BST
Current UTC offset
UTC+0
Daylight saving
Observed
Major cities
London, Birmingham, Glasgow, Manchester +7 more

Coordinated Universal Time

Worldwide reference scale

Abbreviation
UTC
Current UTC offset
UTC+0
Daylight saving
Not observed
Major cities
UTC

Cities in these time zones

A time zone is a rule, not a place. Cities that keep the same standard offset and switch their clocks on the same dates share one time zone, so they are listed together here and appear as a single option in the pickers above. Berlin, Paris, Madrid, and Rome are all Central European Time; New York and Toronto are both Eastern Time. Cities that merely happen to read the same right now stay separate — London and Abidjan both show UTC+0 each winter, but only London moves to UTC+1 in summer, so converting to one is not the same as converting to the other.

Every city below converts identically, on every date, including daylight-saving changeovers. Pick whichever name you recognise — the result is the same.

Greenwich Mean Time

GMT/BST · UTC+0

11 cities across 5 countries · 5 IANA zones

Guernsey
Saint Peter Port
Ireland
Dublin, South Dublin, Cork, Limerick
Isle of Man
Douglas
Jersey
Saint Helier
United Kingdom
London, Birmingham, Glasgow, Manchester

Coordinated Universal Time

UTC · UTC+0

1 city

A reference scale rather than a place — no cities keep this time zone.

Complete tool guide

How to use the GMT to UTC Time Zone Converter: dates, times, formats, and limitations

The GMT to UTC Time Zone Converter is a free online time-and-date utility that converts a time in Greenwich Mean Time to Coordinated Universal Time. It turns calendar or timestamp information into a structured result without requiring a spreadsheet formula, command-line script, or manual calendar count.

Date calculations need more care than ordinary arithmetic because months have different lengths, leap years add a day, local clocks use time zones and daylight-saving rules, and business-day conventions vary. The tool makes its browser-based calculation repeatable while the guide below explains the assumptions you should verify.

Why use this tool?

  • Calculate or inspect calendar information without manually counting through months and leap years.
  • Change inputs quickly to compare schedules, deadlines, durations, timestamps, and planning scenarios.
  • See multiple related representations and totals together rather than converting each field separately.
  • Copy useful values into development, reporting, travel, operations, or project-planning workflows.
  • Run the calculation in the browser without submitting entered dates to a date-calculation service.

Common use cases

  • Scheduling calls or meetings between Greenwich Mean Time and Coordinated Universal Time regions.
  • Planning travel, broadcasts, or deadlines across the two zones.
  • Checking a spreadsheet, application, database, API, calendar, or manually calculated date result.
  • Translating technical time data into a form that colleagues or customers can understand.

How to use it

  1. 1

    Enter a date, a time in GMT and confirm whether the value should be interpreted in local time or UTC.

  2. 2

    Choose the operation or output mode that matches the question you need to answer.

  3. 3

    Review the main converted time and the supporting breakdown, paying attention to direction, time zone, and included endpoints.

  4. 4

    Copy the result together with its date format, unit, and time-zone context so it is not ambiguous later.

Calculation method

It resolves each zone through the IANA time-zone database so daylight-saving transitions are applied for the date you choose.

The browser applies calendar-aware date operations rather than treating every month as an identical number of days.

Understanding the output

converted time

When sharing a result, use an unambiguous format such as an ISO date and state the time zone whenever a clock time is involved.

Time zones and limitations

Abbreviations can shift with daylight saving, so confirm the date you are converting.

Historical, legal, payroll, financial-market, and cross-border scheduling rules can require authoritative holiday calendars or time-zone databases beyond a general browser calculation.

Practical tips for better results

  • Use the swap button to reverse the direction instantly.
  • The 24-hour chart shows the full-day mapping at a glance.
  • Write month names or use ISO YYYY-MM-DD when day/month order could be misunderstood.
  • State UTC or the named local time zone instead of using an unexplained clock time.
  • Confirm whether a duration includes the start date, end date, both, or neither.

Frequently asked questions

What is the GMT to UTC Time Zone Converter used for?

It converts a time in Greenwich Mean Time to Coordinated Universal Time. Common uses include scheduling calls or meetings between greenwich mean time and coordinated universal time regions.; planning travel, broadcasts, or deadlines across the two zones.. The supporting breakdown helps make the result easier to verify and communicate.

How are leap years and different month lengths handled?

The calculation uses calendar-aware browser dates, so February and the varying lengths of calendar months are considered. Results involving a month-end can still depend on the chosen operation and should be reviewed.

Can daylight-saving time affect the result?

Yes. A local-time interval that crosses a daylight-saving change can contain 23 or 25 clock hours even when the calendar dates are one day apart. Use UTC for elapsed technical time when appropriate.

Can I use this for payroll, legal deadlines, or official schedules?

Use it as a planning and verification aid. Official calculations may depend on jurisdiction-specific holidays, cut-off times, inclusion rules, contractual definitions, or authoritative time-zone data.

Keep working

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