Atlantic Time (AST/ADT) Converter

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

From time zone

To time zone

Date

Time in AST

AST → UTC

4:00 PM

Wednesday, January 15, 2025

AST to UTC conversion chart

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

AST	UTC
12:00 AM	4:00 AM
1:00 AM	5:00 AM
2:00 AM	6:00 AM
3:00 AM	7:00 AM
4:00 AM	8:00 AM
5:00 AM	9:00 AM
6:00 AM	10:00 AM
7:00 AM	11:00 AM
8:00 AM	12:00 PM
9:00 AM	1:00 PM
10:00 AM	2:00 PM
11:00 AM	3:00 PM
12:00 PM	4:00 PM
1:00 PM	5:00 PM
2:00 PM	6:00 PM
3:00 PM	7:00 PM
4:00 PM	8:00 PM
5:00 PM	9:00 PM
6:00 PM	10:00 PM
7:00 PM	11:00 PM
8:00 PM	12:00 AM (next day)
9:00 PM	1:00 AM (next day)
10:00 PM	2:00 AM (next day)
11:00 PM	3:00 AM (next day)

Atlantic Time compared with every other time zone

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

From	To	Cities in To zone	Time difference	Current time	Convert
Atlantic Time (AST/ADT)	American Samoa TimeUTC-11UTC-11	Midway, Pago Pago	8h behind (Mar 8 – Nov 1)7h behind (Nov 1 – Mar 8)	–	Convert AST to Midway
Atlantic Time (AST/ADT)	Niue TimeNUTUTC-11	Alofi	8h behind (Mar 8 – Nov 1)7h behind (Nov 1 – Mar 8)	–	Convert AST to NUT
Atlantic Time (AST/ADT)	Cook Islands TimeCKTUTC-10	Avarua	7h behind (Mar 8 – Nov 1)6h behind (Nov 1 – Mar 8)	–	Convert AST to CKT
Atlantic Time (AST/ADT)	Hawaii-Aleutian TimeHASTUTC-10	Honolulu, East Honolulu, Pearl City, Makakilo / Kapolei / Honokai Hale	7h behind (Mar 8 – Nov 1)6h behind (Nov 1 – Mar 8)	–	Convert AST to HAST
Atlantic Time (AST/ADT)	Hawaii-Aleutian Time – AdakHAST/HADTUTC-10 / UTC-9	Adak	7h behind (Mar 8 – Mar 8)6h behind (Mar 8 – Nov 1)5h behind (Nov 1 – Nov 1)6h behind (Nov 1 – Mar 8)	–	Convert AST to HAST
Atlantic Time (AST/ADT)	Tahiti TimeTAHTUTC-10	Faaa, Papeete, Punaauia	7h behind (Mar 8 – Nov 1)6h behind (Nov 1 – Mar 8)	–	Convert AST to TAHT
Atlantic Time (AST/ADT)	Marquesas TimeMARTUTC-9:30	Marquesas	6h 30m behind (Mar 8 – Nov 1)5h 30m behind (Nov 1 – Mar 8)	–	Convert AST to MART
Atlantic Time (AST/ADT)	Alaska TimeAKST/AKDTUTC-9 / UTC-8	Anchorage, Fairbanks, Juneau, Eagle River	6h behind (Mar 8 – Mar 8)5h behind (Mar 8 – Nov 1)4h behind (Nov 1 – Nov 1)5h behind (Nov 1 – Mar 8)	–	Convert AST to AKST
Atlantic Time (AST/ADT)	Gambier TimeGAMTUTC-9	Gambier	6h behind (Mar 8 – Nov 1)5h behind (Nov 1 – Mar 8)	–	Convert AST to GAMT
Atlantic Time (AST/ADT)	Pacific TimePST/PDTUTC-8 / UTC-7	Los Angeles, San Diego, San Jose, San Francisco, Tijuana, Mexicali, Ensenada, Rosarito, Vancouver, Surrey, Victoria, Burnaby	5h behind (Mar 8 – Mar 8)4h behind (Mar 8 – Nov 1)3h behind (Nov 1 – Nov 1)4h behind (Nov 1 – Mar 8)	–	Convert AST to PST
Atlantic Time (AST/ADT)	Pitcairn TimePSTUTC-8	Adamstown	5h behind (Mar 8 – Nov 1)4h behind (Nov 1 – Mar 8)	–	Convert AST to PST
Atlantic Time (AST/ADT)	Mexican Pacific TimeUTC-7UTC-7	Hermosillo, Culiacán, Mazatlán, Tepic	4h behind (Mar 8 – Nov 1)3h behind (Nov 1 – Mar 8)	–	Convert AST to Hermosillo
Atlantic Time (AST/ADT)	Mountain TimeMST/MDTUTC-7 / UTC-6	Denver, El Paso, Albuquerque, Colorado Springs, Calgary, Edmonton, Lethbridge, Red Deer, Ciudad Juárez	4h behind (Mar 8 – Mar 8)3h behind (Mar 8 – Nov 1)2h behind (Nov 1 – Nov 1)3h behind (Nov 1 – Mar 8)	–	Convert AST to MST
Atlantic Time (AST/ADT)	Mountain Time – PhoenixMSTUTC-7	Phoenix, Tucson, Mesa, Chandler	4h behind (Mar 8 – Nov 1)3h behind (Nov 1 – Mar 8)	–	Convert AST to MST
Atlantic Time (AST/ADT)	Yukon TimeYTUTC-7	Whitehorse, Fort St. John, Creston, Dawson	4h behind (Mar 8 – Nov 1)3h behind (Nov 1 – Mar 8)	–	Convert AST to YT
Atlantic Time (AST/ADT)	Central TimeCST/CDTUTC-6 / UTC-5	Chicago, Houston, San Antonio, Dallas, Reynosa, Heroica Matamoros, Nuevo Laredo, Ciudad Acuña, Winnipeg, Brandon, Steinbach, Kenora	3h behind (Mar 8 – Mar 8)2h behind (Mar 8 – Nov 1)1h behind (Nov 1 – Nov 1)2h behind (Nov 1 – Mar 8)	–	Convert AST to CST
Atlantic Time (AST/ADT)	Central Time – Mexico CityCSTUTC-6	Mexico 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, Choloma	3h behind (Mar 8 – Nov 1)2h behind (Nov 1 – Mar 8)	–	Convert AST to CST
Atlantic Time (AST/ADT)	Easter Island TimeEAST/EADTUTC-6 / UTC-5	Easter	2h behind (Mar 8 – Apr 4)3h behind (Apr 4 – Sep 5)2h behind (Sep 5 – Nov 1)1h behind (Nov 1 – Mar 8)	–	Convert AST to EAST
Atlantic Time (AST/ADT)	Galapagos TimeGALTUTC-6	Galapagos	3h behind (Mar 8 – Nov 1)2h behind (Nov 1 – Mar 8)	–	Convert AST to GALT
Atlantic Time (AST/ADT)	Acre TimeACTUTC-5	Rio Branco, Cruzeiro do Sul, Tarauacá, Sena Madureira	2h behind (Mar 8 – Nov 1)1h behind (Nov 1 – Mar 8)	–	Convert AST to ACT
Atlantic Time (AST/ADT)	Colombia TimeCOTUTC-5	Bogotá, Cali, Medellín, Barranquilla	2h behind (Mar 8 – Nov 1)1h behind (Nov 1 – Mar 8)	–	Convert AST to COT
Atlantic Time (AST/ADT)	Cuba TimeCST/CDTUTC-5 / UTC-4	Havana, Santiago de Cuba, Camagüey, Holguín	Same time (Mar 8 – Mar 8)1h behind (Mar 8 – Mar 8)	–	Convert AST to CST
Atlantic Time (AST/ADT)	Eastern TimeEST/EDTUTC-5 / UTC-4	New York City, Brooklyn, Queens, Philadelphia, Nassau, Lucaya, Freeport, Killarney, Port-au-Prince, Carrefour, Delmas, Port-de-Paix, Providenciales, Cockburn Town, Toronto, Montréal, Ottawa, Mississauga	2h behind (Mar 8 – Mar 8)1h behind (Mar 8 – Nov 1)Same time (Nov 1 – Nov 1)1h behind (Nov 1 – Mar 8)	–	Convert AST to EST
Atlantic Time (AST/ADT)	Eastern Time – PanamaESTUTC-5	Panamá, San Miguelito, Juan Díaz, David, Atikokan, Cancún, Chetumal, Playa del Carmen, Cozumel, George Town, West Bay, Kingston, New Kingston, Spanish Town, Portmore	2h behind (Mar 8 – Nov 1)1h behind (Nov 1 – Mar 8)	–	Convert AST to EST
Atlantic Time (AST/ADT)	Ecuador TimeECTUTC-5	Quito, Guayaquil, Cuenca, Santo Domingo de los Colorados	2h behind (Mar 8 – Nov 1)1h behind (Nov 1 – Mar 8)	–	Convert AST to ECT
Atlantic Time (AST/ADT)	Peru TimePETUTC-5	Lima, Callao, Arequipa, Trujillo	2h behind (Mar 8 – Nov 1)1h behind (Nov 1 – Mar 8)	–	Convert AST to PET
Atlantic Time (AST/ADT)	Amazon TimeAMTUTC-4	Manaus, Campo Grande, Cuiabá, Porto Velho	1h behind (Mar 8 – Nov 1)Same time (Nov 1 – Mar 8)	–	Convert AST to AMT
Atlantic Time (AST/ADT)	Atlantic Time – Santo DomingoASTUTC-4	Santo 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, Bandariba	1h behind (Mar 8 – Nov 1)Same time (Nov 1 – Mar 8)	–	Convert AST to AST
Atlantic Time (AST/ADT)	Bolivia TimeBOTUTC-4	La Paz, Santa Cruz de la Sierra, Cochabamba, Sucre	1h behind (Mar 8 – Nov 1)Same time (Nov 1 – Mar 8)	–	Convert AST to BOT
Atlantic Time (AST/ADT)	Chile TimeCLTUTC-4 / UTC-3	Santiago, Puente Alto, Maipú, Antofagasta	Same time (Mar 8 – Apr 4)1h behind (Apr 4 – Sep 6)Same time (Sep 6 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to CLT
Atlantic Time (AST/ADT)	Guyana TimeGYTUTC-4	Georgetown, Linden, New Amsterdam	1h behind (Mar 8 – Nov 1)Same time (Nov 1 – Mar 8)	–	Convert AST to GYT
Atlantic Time (AST/ADT)	Venezuela TimeVETUTC-4	Caracas, Maracaibo, Valencia, Barquisimeto	1h behind (Mar 8 – Nov 1)Same time (Nov 1 – Mar 8)	–	Convert AST to VET
Atlantic Time (AST/ADT)	Newfoundland TimeNST/NDTUTC-3:30 / UTC-2:30	St. John's, Mount Pearl, Paradise, Corner Brook	1h 30m ahead (Mar 8 – Mar 8)30m ahead (Mar 8 – Nov 1)30m behind (Nov 1 – Nov 1)30m ahead (Nov 1 – Mar 8)	–	Convert AST to NST
Atlantic Time (AST/ADT)	Argentina TimeARTUTC-3	Buenos Aires, Córdoba, Rosario, Mar del Plata	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to ART
Atlantic Time (AST/ADT)	Brasilia TimeBRTUTC-3	São Paulo, Rio de Janeiro, Belo Horizonte, Salvador	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to BRT
Atlantic Time (AST/ADT)	Chile Time – Punta ArenasCLTUTC-3	Punta Arenas, Coyhaique, Puerto Natales, Puerto Aysén, Palmer, Rothera	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to CLT
Atlantic Time (AST/ADT)	Falkland Islands TimeFKSTUTC-3	Stanley	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to FKST
Atlantic Time (AST/ADT)	French Guiana TimeGFTUTC-3	Cayenne, Matoury, Saint-Laurent-du-Maroni, Kourou	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to GFT
Atlantic Time (AST/ADT)	Paraguay TimePYTUTC-3	Asunción, Ciudad del Este, San Lorenzo, Capiatá	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to PYT
Atlantic Time (AST/ADT)	St. Pierre & Miquelon TimePMUTC-3 / UTC-2	Saint-Pierre	2h ahead (Mar 8 – Mar 8)1h ahead (Mar 8 – Nov 1)Same time (Nov 1 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to PM
Atlantic Time (AST/ADT)	Suriname TimeSRTUTC-3	Paramaribo, Blauwgrond, Rainville, Flora	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to SRT
Atlantic Time (AST/ADT)	Uruguay TimeUYTUTC-3	Montevideo, Salto, Paysandú, Las Piedras	Same time (Mar 8 – Nov 1)1h ahead (Nov 1 – Mar 8)	–	Convert AST to UYT
Atlantic Time (AST/ADT)	Fernando de Noronha TimeFNTUTC-2	Noronha	1h ahead (Mar 8 – Nov 1)2h ahead (Nov 1 – Mar 8)	–	Convert AST to FNT
Atlantic Time (AST/ADT)	Greenland TimeUTC-2UTC-2 / UTC-1	Nuuk, Scoresbysund	1h ahead (Mar 8 – Mar 29)2h ahead (Mar 29 – Oct 24)1h ahead (Oct 24 – Nov 1)2h ahead (Nov 1 – Mar 8)	–	Convert AST to Nuuk
Atlantic Time (AST/ADT)	South Georgia TimeGSTUTC-2	Grytviken	1h ahead (Mar 8 – Nov 1)2h ahead (Nov 1 – Mar 8)	–	Convert AST to GST
Atlantic Time (AST/ADT)	Azores TimeAZOTUTC-1 / UTC+0	Ponta Delgada	2h ahead (Mar 8 – Mar 29)3h ahead (Mar 29 – Oct 25)2h ahead (Oct 25 – Nov 1)3h ahead (Nov 1 – Mar 8)	–	Convert AST to AZOT
Atlantic Time (AST/ADT)	Cape Verde TimeCVTUTC-1	Praia, Mindelo, Espargos, Assomada	2h ahead (Mar 8 – Nov 1)3h ahead (Nov 1 – Mar 8)	–	Convert AST to CVT
Atlantic Time (AST/ADT)	Coordinated Universal TimeUTCUTC+0	UTC	3h ahead (Mar 8 – Nov 1)4h ahead (Nov 1 – Mar 8)	–	Convert AST to UTC
Atlantic Time (AST/ADT)	Greenwich Mean TimeGMT/BSTUTC+0 / UTC+1	London, Birmingham, Glasgow, Manchester, Douglas, Dublin, South Dublin, Cork, Limerick, Saint Helier, Saint Peter Port	3h ahead (Mar 8 – Mar 29)4h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Nov 1)4h ahead (Nov 1 – Mar 8)	–	Convert AST to GMT
Atlantic Time (AST/ADT)	Greenwich Mean Time – AccraGMTUTC+0	Kumasi, 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, Sukuta	3h ahead (Mar 8 – Nov 1)4h ahead (Nov 1 – Mar 8)	–	Convert AST to GMT
Atlantic Time (AST/ADT)	Greenwich Mean Time – TrollGMTUTC+0 / UTC+2	Troll	3h ahead (Mar 8 – Mar 29)5h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Nov 1)4h ahead (Nov 1 – Mar 8)	–	Convert AST to GMT
Atlantic Time (AST/ADT)	Western European TimeWET/WESTUTC+0 / UTC+1	Lisbon, Porto, Amadora, Braga, Las Palmas de Gran Canaria, Santa Cruz de Tenerife, La Laguna, Telde, Tórshavn	3h ahead (Mar 8 – Mar 29)4h ahead (Mar 29 – Oct 25)3h ahead (Oct 25 – Nov 1)4h ahead (Nov 1 – Mar 8)	–	Convert AST to WET
Atlantic Time (AST/ADT)	Western European Time – CasablancaWETUTC+0 / UTC+1	Casablanca, Rabat, Fes, Tangier, Laayoune, Dakhla, Boujdour	5h ahead (until Feb 15)4h ahead (Feb 15 – Mar 8)3h ahead (Mar 8 – Mar 22)4h ahead (Mar 22 – Sep 20)3h ahead (Sep 20 – Nov 1)4h ahead (from Nov 1)	–	Convert AST to WET
Atlantic Time (AST/ADT)	Central European TimeCET/CESTUTC+1 / UTC+2	Paris, 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, Lausanne	4h ahead (Mar 8 – Mar 29)5h ahead (Mar 29 – Oct 25)4h ahead (Oct 25 – Nov 1)5h ahead (Nov 1 – Mar 8)	–	Convert AST to CET
Atlantic Time (AST/ADT)	Central European Time – AlgiersCETUTC+1	Algiers, Oran, Constantine, Annaba, Tunis, Sfax, Sousse, Kairouan	4h ahead (Mar 8 – Nov 1)5h ahead (Nov 1 – Mar 8)	–	Convert AST to CET
Atlantic Time (AST/ADT)	West Africa TimeWATUTC+1	Lagos, 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, Tahoua	4h ahead (Mar 8 – Nov 1)5h ahead (Nov 1 – Mar 8)	–	Convert AST to WAT
Atlantic Time (AST/ADT)	Central Africa TimeCATUTC+2	Lilongwe, 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, Swakopmund	5h ahead (Mar 8 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to CAT
Atlantic Time (AST/ADT)	Eastern European TimeEET/EESTUTC+2 / UTC+3	Athens, 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, Šiauliai	5h ahead (Mar 8 – Mar 29)6h ahead (Mar 29 – Oct 25)5h ahead (Oct 25 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to EET
Atlantic Time (AST/ADT)	Eastern European Time – BeirutEET/EESTUTC+2 / UTC+3	Beirut, Ra’s Bayrūt, Tripoli, Sidon	5h ahead (Mar 8 – Mar 29)6h ahead (Mar 29 – Oct 24)5h ahead (Oct 24 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to EET
Atlantic Time (AST/ADT)	Eastern European Time – CairoEET/EESTUTC+2 / UTC+3	Cairo, Alexandria, Giza, Shubrā al Khaymah	5h ahead (Mar 8 – Apr 24)6h ahead (Apr 24 – Oct 29)5h ahead (Oct 29 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to EET
Atlantic Time (AST/ADT)	Eastern European Time – HebronEET/EESTUTC+2 / UTC+3	East Jerusalem, Gaza, Khān Yūnis, Jabālyā	5h ahead (Mar 8 – Mar 28)6h ahead (Mar 28 – Oct 24)5h ahead (Oct 24 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to EET
Atlantic Time (AST/ADT)	Eastern European Time – TripoliEETUTC+2	Tripoli, Benghazi, Misratah, Zliten, Kaliningrad, Chernyakhovsk, Sovetsk, Baltiysk	5h ahead (Mar 8 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to EET
Atlantic Time (AST/ADT)	Israel TimeIST/IDTUTC+2 / UTC+3	Jerusalem, Tel Aviv, West Jerusalem, Haifa	5h ahead (Mar 8 – Mar 27)6h ahead (Mar 27 – Oct 25)5h ahead (Oct 25 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to IST
Atlantic Time (AST/ADT)	South Africa TimeSASTUTC+2	Johannesburg, Cape Town, Durban, Pretoria, Manzini, Mbabane, Lobamba, Maseru, Maputsoe, Mohale's Hoek, Mafeteng	5h ahead (Mar 8 – Nov 1)6h ahead (Nov 1 – Mar 8)	–	Convert AST to SAST
Atlantic Time (AST/ADT)	Arabian TimeASTUTC+3	Baghdad, 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, Ibb	6h ahead (Mar 8 – Nov 1)7h ahead (Nov 1 – Mar 8)	–	Convert AST to AST
Atlantic Time (AST/ADT)	East Africa TimeEATUTC+3	Nairobi, 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, Fomboni	6h ahead (Mar 8 – Nov 1)7h ahead (Nov 1 – Mar 8)	–	Convert AST to EAT
Atlantic Time (AST/ADT)	Jordan TimeUTC+3UTC+3	Amman, Zarqa, Irbid, Russeifa	6h ahead (Mar 8 – Nov 1)7h ahead (Nov 1 – Mar 8)	–	Convert AST to Amman
Atlantic Time (AST/ADT)	Moscow TimeMSKUTC+3	Moscow, Saint Petersburg, Nizhniy Novgorod, Kazan, Minsk, Homyel', Hrodna, Vitebsk, Sevastopol, Simferopol, Kerch, Yevpatoriya	6h ahead (Mar 8 – Nov 1)7h ahead (Nov 1 – Mar 8)	–	Convert AST to MSK
Atlantic Time (AST/ADT)	Syowa TimeSYOTUTC+3	Syowa	6h ahead (Mar 8 – Nov 1)7h ahead (Nov 1 – Mar 8)	–	Convert AST to SYOT
Atlantic Time (AST/ADT)	Syria TimeUTC+3UTC+3	Aleppo, Damascus, Homs, Latakia	6h ahead (Mar 8 – Nov 1)7h ahead (Nov 1 – Mar 8)	–	Convert AST to Aleppo
Atlantic Time (AST/ADT)	Turkey TimeTRTUTC+3	Istanbul, Ankara, Bursa, İzmir	6h ahead (Mar 8 – Nov 1)7h ahead (Nov 1 – Mar 8)	–	Convert AST to TRT
Atlantic Time (AST/ADT)	Iran TimeIRSTUTC+3:30	Tehran, Mashhad, Isfahan, Karaj	6h 30m ahead (Mar 8 – Nov 1)7h 30m ahead (Nov 1 – Mar 8)	–	Convert AST to IRST
Atlantic Time (AST/ADT)	Armenia TimeAMTUTC+4	Yerevan, Malatia-Sebastia, Shengavit, Nor Nork	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to AMT
Atlantic Time (AST/ADT)	Azerbaijan TimeAZTUTC+4	Baku, Sumqayıt, Ganja, Lankaran	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to AZT
Atlantic Time (AST/ADT)	Georgia TimeGETUTC+4	Tbilisi, Batumi, Kutaisi, Rustavi	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to GET
Atlantic Time (AST/ADT)	Gulf TimeGSTUTC+4	Dubai, Abu Dhabi, Sharjah, Al Ain City, Muscat, Seeb, Bawshar, ‘Ibrī	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to GST
Atlantic Time (AST/ADT)	Mauritius TimeMUTUTC+4	Port Louis, Vacoas, Beau Bassin-Rose Hill, Curepipe	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to MUT
Atlantic Time (AST/ADT)	Réunion TimeRETUTC+4	Saint-Denis, Saint-Paul, Saint-Pierre, Le Tampon	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to RET
Atlantic Time (AST/ADT)	Samara TimeSAMTUTC+4	Samara, Saratov, Tolyatti, Izhevsk	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to SAMT
Atlantic Time (AST/ADT)	Seychelles TimeSCTUTC+4	Victoria	7h ahead (Mar 8 – Nov 1)8h ahead (Nov 1 – Mar 8)	–	Convert AST to SCT
Atlantic Time (AST/ADT)	Afghanistan TimeAFTUTC+4:30	Kabul, Herāt, Mazār-e Sharīf, Kandahār	7h 30m ahead (Mar 8 – Nov 1)8h 30m ahead (Nov 1 – Mar 8)	–	Convert AST to AFT
Atlantic Time (AST/ADT)	French Southern & Antarctic TimeFSATUTC+5	Port-aux-Français	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to FSAT
Atlantic Time (AST/ADT)	Kazakhstan TimeUTC+5UTC+5	Almaty, Shymkent, Aktobe, Karagandy	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to Almaty
Atlantic Time (AST/ADT)	Maldives TimeMVTUTC+5	Male	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to MVT
Atlantic Time (AST/ADT)	Mawson TimeMAWTUTC+5	Mawson, Vostok	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to MAWT
Atlantic Time (AST/ADT)	Pakistan TimePKTUTC+5	Lahore, Karachi, Peshawar, Faisalabad	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to PKT
Atlantic Time (AST/ADT)	Tajikistan TimeTJTUTC+5	Dushanbe, Isfara, Istaravshan, Kŭlob	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to TJT
Atlantic Time (AST/ADT)	Turkmenistan TimeTMTUTC+5	Ashgabat, Türkmenabat, Daşoguz, Mary	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to TMT
Atlantic Time (AST/ADT)	Uzbekistan TimeUZTUTC+5	Tashkent, Andijon, Namangan, Samarkand	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to UZT
Atlantic Time (AST/ADT)	Yekaterinburg TimeYEKTUTC+5	Yekaterinburg, Chelyabinsk, Ufa, Perm	8h ahead (Mar 8 – Nov 1)9h ahead (Nov 1 – Mar 8)	–	Convert AST to YEKT
Atlantic Time (AST/ADT)	India TimeISTUTC+5:30	Mumbai, Delhi, Bengaluru, Hyderabad, Colombo, Dehiwala-Mount Lavinia, Maharagama, Jaffna	8h 30m ahead (Mar 8 – Nov 1)9h 30m ahead (Nov 1 – Mar 8)	–	Convert AST to IST
Atlantic Time (AST/ADT)	Nepal TimeNPTUTC+5:45	Kathmandu, Pokhara, Bharatpur, Pātan	8h 45m ahead (Mar 8 – Nov 1)9h 45m ahead (Nov 1 – Mar 8)	–	Convert AST to NPT
Atlantic Time (AST/ADT)	Bangladesh TimeBSTUTC+6	Dhaka, Chattogram, Gazipur, Khulna	9h ahead (Mar 8 – Nov 1)10h ahead (Nov 1 – Mar 8)	–	Convert AST to BST
Atlantic Time (AST/ADT)	Bhutan TimeBTTUTC+6	Thimphu, Phuntsholing, Tsirang, Punākha	9h ahead (Mar 8 – Nov 1)10h ahead (Nov 1 – Mar 8)	–	Convert AST to BTT
Atlantic Time (AST/ADT)	China Time – UrumqiCSTUTC+6	Ürümqi, Shihezi, Korla, Aqsu	9h ahead (Mar 8 – Nov 1)10h ahead (Nov 1 – Mar 8)	–	Convert AST to CST
Atlantic Time (AST/ADT)	Indian Ocean TimeIOTUTC+6	Chagos	9h ahead (Mar 8 – Nov 1)10h ahead (Nov 1 – Mar 8)	–	Convert AST to IOT
Atlantic Time (AST/ADT)	Kyrgyzstan TimeKGTUTC+6	Bishkek, Osh, Jalal-Abad, Karakol	9h ahead (Mar 8 – Nov 1)10h ahead (Nov 1 – Mar 8)	–	Convert AST to KGT
Atlantic Time (AST/ADT)	Omsk TimeOMSTUTC+6	Omsk, Tara, Kalachinsk, Isil’kul’	9h ahead (Mar 8 – Nov 1)10h ahead (Nov 1 – Mar 8)	–	Convert AST to OMST
Atlantic Time (AST/ADT)	Cocos Islands TimeCCTUTC+6:30	West Island	9h 30m ahead (Mar 8 – Nov 1)10h 30m ahead (Nov 1 – Mar 8)	–	Convert AST to CCT
Atlantic Time (AST/ADT)	Myanmar TimeMMTUTC+6:30	Yangon, Mandalay, Nay Pyi Taw, Hlaingthaya Township	9h 30m ahead (Mar 8 – Nov 1)10h 30m ahead (Nov 1 – Mar 8)	–	Convert AST to MMT
Atlantic Time (AST/ADT)	Christmas Island TimeCXTUTC+7	Flying Fish Cove	10h ahead (Mar 8 – Nov 1)11h ahead (Nov 1 – Mar 8)	–	Convert AST to CXT
Atlantic Time (AST/ADT)	Davis TimeDAVTUTC+7	Davis	10h ahead (Mar 8 – Nov 1)11h ahead (Nov 1 – Mar 8)	–	Convert AST to DAVT
Atlantic Time (AST/ADT)	Hovd TimeHOVTUTC+7	Ulaangom, Khovd, Ölgii, Altai	10h ahead (Mar 8 – Nov 1)11h ahead (Nov 1 – Mar 8)	–	Convert AST to HOVT
Atlantic Time (AST/ADT)	Indochina TimeICTUTC+7	Bangkok, 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, Thakhèk	10h ahead (Mar 8 – Nov 1)11h ahead (Nov 1 – Mar 8)	–	Convert AST to ICT
Atlantic Time (AST/ADT)	Novosibirsk TimeNOVTUTC+7	Novosibirsk, Krasnoyarsk, Barnaul, Tomsk	10h ahead (Mar 8 – Nov 1)11h ahead (Nov 1 – Mar 8)	–	Convert AST to NOVT
Atlantic Time (AST/ADT)	Western Indonesia TimeWIBUTC+7	Jakarta, Surabaya, Bekasi, Bandung	10h ahead (Mar 8 – Nov 1)11h ahead (Nov 1 – Mar 8)	–	Convert AST to WIB
Atlantic Time (AST/ADT)	Australian Western TimeAWSTUTC+8	Perth, Mandurah, Bunbury, Geraldton, Casey	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to AWST
Atlantic Time (AST/ADT)	Brunei TimeUTC+8UTC+8	Bandar Seri Begawan, Sengkurong, Mentiri, Kuala Belait	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to Bandar Seri Begawan
Atlantic Time (AST/ADT)	Central Indonesia TimeWITAUTC+8	Makassar, Samarinda, Denpasar, Balikpapan	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to WITA
Atlantic Time (AST/ADT)	China TimeCSTUTC+8	Shanghai, Beijing, Shenzhen, Guangzhou, Macau, Taipa, Sé, Luhuan	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to CST
Atlantic Time (AST/ADT)	Hong Kong TimeHKTUTC+8	Hong Kong, New Territories, Kowloon, Hong Kong Island	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to HKT
Atlantic Time (AST/ADT)	Irkutsk TimeIRKTUTC+8	Irkutsk, Ulan-Ude, Bratsk, Angarsk	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to IRKT
Atlantic Time (AST/ADT)	Malaysia TimeMYTUTC+8	Kuala Lumpur, Johor Bahru, Kampung Baru Subang, Petaling Jaya	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to MYT
Atlantic Time (AST/ADT)	Philippine TimePHTUTC+8	Quezon City, Davao, Caloocan City, Manila	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to PHT
Atlantic Time (AST/ADT)	Singapore TimeSGTUTC+8	Singapore, Ulu Bedok, Bedok New Town, Tampines Estate	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to SGT
Atlantic Time (AST/ADT)	Taiwan TimeUTC+8UTC+8	Taipei, New Taipei City, Taichung, Kaohsiung	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to Taipei
Atlantic Time (AST/ADT)	Ulaanbaatar TimeULATUTC+8	Ulan Bator, Erdenet, Darhan, Choibalsan	11h ahead (Mar 8 – Nov 1)12h ahead (Nov 1 – Mar 8)	–	Convert AST to ULAT
Atlantic Time (AST/ADT)	Australian Central Western TimeACWSTUTC+8:45	Eucla	11h 45m ahead (Mar 8 – Nov 1)12h 45m ahead (Nov 1 – Mar 8)	–	Convert AST to ACWST
Atlantic Time (AST/ADT)	Eastern Indonesia TimeWITUTC+9	Jayapura, Ambon, Sorong, Ternate	12h ahead (Mar 8 – Nov 1)13h ahead (Nov 1 – Mar 8)	–	Convert AST to WIT
Atlantic Time (AST/ADT)	Japan TimeJSTUTC+9	Tokyo, Yokohama, Osaka, Nagoya	12h ahead (Mar 8 – Nov 1)13h ahead (Nov 1 – Mar 8)	–	Convert AST to JST
Atlantic Time (AST/ADT)	Korean TimeKSTUTC+9	Seoul, Busan, Incheon, Daegu, Pyongyang, Hamhŭng, Namp’o, Sunch’ŏn	12h ahead (Mar 8 – Nov 1)13h ahead (Nov 1 – Mar 8)	–	Convert AST to KST
Atlantic Time (AST/ADT)	Palau TimePWTUTC+9	Ngerulmud	12h ahead (Mar 8 – Nov 1)13h ahead (Nov 1 – Mar 8)	–	Convert AST to PWT
Atlantic Time (AST/ADT)	Timor-Leste TimeUTC+9UTC+9	Dili, Maliana, Suai, Likisá	12h ahead (Mar 8 – Nov 1)13h ahead (Nov 1 – Mar 8)	–	Convert AST to Dili
Atlantic Time (AST/ADT)	Yakutsk TimeYAKTUTC+9	Chita, Yakutsk, Blagoveshchensk, Belogorsk	12h ahead (Mar 8 – Nov 1)13h ahead (Nov 1 – Mar 8)	–	Convert AST to YAKT
Atlantic Time (AST/ADT)	Australian Central TimeACST/ACDTUTC+9:30 / UTC+10:30	Adelaide, Adelaide Hills, Mount Gambier, Morphett Vale	13h 30m ahead (Mar 8 – Apr 5)12h 30m ahead (Apr 5 – Oct 4)13h 30m ahead (Oct 4 – Nov 1)14h 30m ahead (Nov 1 – Mar 8)	–	Convert AST to ACST
Atlantic Time (AST/ADT)	Australian Central Time – DarwinACSTUTC+9:30	Darwin, Palmerston, Alice Springs	12h 30m ahead (Mar 8 – Nov 1)13h 30m ahead (Nov 1 – Mar 8)	–	Convert AST to ACST
Atlantic Time (AST/ADT)	Australian Eastern TimeAEST/AEDTUTC+10 / UTC+11	Sydney, Melbourne, Newcastle, Canberra	14h ahead (Mar 8 – Apr 5)13h ahead (Apr 5 – Oct 4)14h ahead (Oct 4 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to AEST
Atlantic Time (AST/ADT)	Australian Eastern Time – BrisbaneAESTUTC+10	Brisbane, Gold Coast, Sunshine Coast, Logan City	13h ahead (Mar 8 – Nov 1)14h ahead (Nov 1 – Mar 8)	–	Convert AST to AEST
Atlantic Time (AST/ADT)	Chamorro TimeChSTUTC+10	Dededo Village, Yigo Village, Tamuning-Tumon-Harmon Village, Tamuning, Saipan	13h ahead (Mar 8 – Nov 1)14h ahead (Nov 1 – Mar 8)	–	Convert AST to ChST
Atlantic Time (AST/ADT)	Chuuk TimeCHUTUTC+10	Chuuk	13h ahead (Mar 8 – Nov 1)14h ahead (Nov 1 – Mar 8)	–	Convert AST to CHUT
Atlantic Time (AST/ADT)	Dumont d’Urville TimeUTC+10UTC+10	DumontDUrville	13h ahead (Mar 8 – Nov 1)14h ahead (Nov 1 – Mar 8)	–	Convert AST to DumontDUrville
Atlantic Time (AST/ADT)	Papua New Guinea TimePGTUTC+10	Port Moresby, Lae, Mount Hagen, Popondetta	13h ahead (Mar 8 – Nov 1)14h ahead (Nov 1 – Mar 8)	–	Convert AST to PGT
Atlantic Time (AST/ADT)	Vladivostok TimeVLATUTC+10	Khabarovsk, Vladivostok, Khabarovsk Vtoroy, Komsomolsk-on-Amur	13h ahead (Mar 8 – Nov 1)14h ahead (Nov 1 – Mar 8)	–	Convert AST to VLAT
Atlantic Time (AST/ADT)	Lord Howe TimeLHST/LHDTUTC+10:30 / UTC+11	Lord Howe	14h ahead (Mar 8 – Apr 5)13h 30m ahead (Apr 5 – Oct 4)14h ahead (Oct 4 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to LHST
Atlantic Time (AST/ADT)	Bougainville TimeBSTUTC+11	Arawa	14h ahead (Mar 8 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to BST
Atlantic Time (AST/ADT)	Kosrae TimeKOSTUTC+11	Kosrae, Palikir	14h ahead (Mar 8 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to KOST
Atlantic Time (AST/ADT)	New Caledonia TimeNCTUTC+11	Nouméa, Mont-Dore, Dumbéa	14h ahead (Mar 8 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to NCT
Atlantic Time (AST/ADT)	Norfolk Island TimeNFTUTC+11 / UTC+12	Kingston	15h ahead (Mar 8 – Apr 5)14h ahead (Apr 5 – Oct 4)15h ahead (Oct 4 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to NFT
Atlantic Time (AST/ADT)	Sakhalin TimeSAKTUTC+11	Yuzhno-Sakhalinsk, Magadan, Korsakov, Kholmsk	14h ahead (Mar 8 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to SAKT
Atlantic Time (AST/ADT)	Solomon Islands TimeSBTUTC+11	Honiara, Panatina, Nggosi, Tandai	14h ahead (Mar 8 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to SBT
Atlantic Time (AST/ADT)	Vanuatu TimeVUTUTC+11	Port-Vila	14h ahead (Mar 8 – Nov 1)15h ahead (Nov 1 – Mar 8)	–	Convert AST to VUT
Atlantic Time (AST/ADT)	Fiji TimeFJTUTC+12	Nasinu, Suva, Lautoka, Nadi	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to FJT
Atlantic Time (AST/ADT)	Gilbert Islands TimeGILTUTC+12	Tarawa	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to GILT
Atlantic Time (AST/ADT)	Kamchatka TimePETTUTC+12	Petropavlovsk-Kamchatsky, Yelizovo, Vilyuchinsk, Anadyr	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to PETT
Atlantic Time (AST/ADT)	Marshall Islands TimeMHTUTC+12	Majuro, Kwajalein	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to MHT
Atlantic Time (AST/ADT)	Nauru TimeNRTUTC+12	Yaren	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to NRT
Atlantic Time (AST/ADT)	New Zealand TimeNZST/NZDTUTC+12 / UTC+13	Auckland, Christchurch, Wellington, Manukau City, McMurdo	16h ahead (Mar 8 – Apr 5)15h ahead (Apr 5 – Sep 27)16h ahead (Sep 27 – Nov 1)17h ahead (Nov 1 – Mar 8)	–	Convert AST to NZST
Atlantic Time (AST/ADT)	Tuvalu TimeTVTUTC+12	Funafuti	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to TVT
Atlantic Time (AST/ADT)	Wake Island TimeWAKTUTC+12	Wake	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to WAKT
Atlantic Time (AST/ADT)	Wallis & Futuna TimeWFTUTC+12	Mata-Utu	15h ahead (Mar 8 – Nov 1)16h ahead (Nov 1 – Mar 8)	–	Convert AST to WFT
Atlantic Time (AST/ADT)	Chatham TimeCHAST/CHADTUTC+12:45 / UTC+13:45	Chatham	16h 45m ahead (Mar 8 – Apr 5)15h 45m ahead (Apr 5 – Sep 27)16h 45m ahead (Sep 27 – Nov 1)17h 45m ahead (Nov 1 – Mar 8)	–	Convert AST to CHAST
Atlantic Time (AST/ADT)	Phoenix Islands TimePHOTUTC+13	Kanton	16h ahead (Mar 8 – Nov 1)17h ahead (Nov 1 – Mar 8)	–	Convert AST to PHOT
Atlantic Time (AST/ADT)	Samoa TimeSSTUTC+13	Apia	16h ahead (Mar 8 – Nov 1)17h ahead (Nov 1 – Mar 8)	–	Convert AST to SST
Atlantic Time (AST/ADT)	Tokelau TimeTKTUTC+13	Fakaofo	16h ahead (Mar 8 – Nov 1)17h ahead (Nov 1 – Mar 8)	–	Convert AST to TKT
Atlantic Time (AST/ADT)	Tonga TimeTOTUTC+13	Nuku‘alofa	16h ahead (Mar 8 – Nov 1)17h ahead (Nov 1 – Mar 8)	–	Convert AST to TOT
Atlantic Time (AST/ADT)	Line Islands TimeLINTUTC+14	Kiritimati	17h ahead (Mar 8 – Nov 1)18h ahead (Nov 1 – Mar 8)	–	Convert AST to LINT

Atlantic Time

Bermuda, Canada, Greenland

Abbreviation: AST/ADT
Current UTC offset: UTC-4
Daylight saving: Observed
Major cities: Halifax, Sydney, Dartmouth, Moncton +2 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.

Atlantic Time

AST/ADT · UTC-4

6 cities across 3 countries · 3 IANA zones

Bermuda: Hamilton
Canada: Halifax, Sydney, Dartmouth, Moncton
Greenland: Thule

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 AST to UTC Time Zone Converter: dates, times, formats, and limitations

The AST to UTC Time Zone Converter is a free online time-and-date utility that converts a time in Atlantic 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 Atlantic 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
Enter a date, a time in AST and confirm whether the value should be interpreted in local time or UTC.
2
Choose the operation or output mode that matches the question you need to answer.
3
Review the main converted time and the supporting breakdown, paying attention to direction, time zone, and included endpoints.
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 AST to UTC Time Zone Converter used for?

It converts a time in Atlantic Time to Coordinated Universal Time. Common uses include scheduling calls or meetings between atlantic 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.

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