The timezone subparameter of explore_source supports the following values, which are listed under their UTC offsets and geographical regions:
UTC-12:00 International Date Line West
- Etc/GMT+12
UTC-11:00 Coordinated Universal Time-11
- Etc/GMT+11
- Pacific/Pago_Pago
- Pacific/Samoa
- US/Samoa
- Pacific/Niue
- Pacific/Midway
UTC-10:00 Aleutian Islands
- America/Adak
- US/Aleutian
UTC-10:00 Hawaii
- Pacific/Honolulu
- US/Hawaii
- Pacific/Rarotonga
- Pacific/Tahiti
- Pacific/Johnston
- Etc/GMT+10
- HST
UTC-09:30 Marquesas Islands
- Pacific/Marquesas
UTC-09:00 Alaska
- America/Anchorage
- America/Juneau
- America/Metlakatla
- America/Nome
- America/Sitka
- America/Yakutat
- America/Atka
- US/Alaska
UTC-09:00 Coordinated Universal Time-09
- Etc/GMT+9
- Pacific/Gambier
UTC-08:00 Baja California
- America/Tijuana
- America/Santa_Isabel
- America/Ensenada
- Mexico/BajaNorte
UTC-08:00 Coordinated Universal Time-08
- Etc/GMT+8
- Pacific/Pitcairn
UTC-08:00 Pacific Time (US & Canada)
- America/Los_Angeles
- America/Vancouver
- America/Dawson
- America/Whitehorse
- Canada/Pacific
- Canada/Yukon
- PST8PDT
UTC-07:00 Arizona
- America/Phoenix
- America/Dawson_Creek
- America/Creston
- America/Fort_Nelson
- America/Shiprock
- America/Hermosillo
- US/Arizona
- Etc/GMT+7
UTC-07:00 Chihuahua, La Paz, Mazatlan
- America/Chihuahua
- America/Mazatlan
- Mexico/BajaSur
UTC-07:00 Mountain Time (US & Canada)
- America/Denver
- America/Edmonton
- America/Cambridge_Bay
- America/Inuvik
- America/Yellowknife
- Canada/Mountain
- America/Ojinaga
- America/Boise
- Navajo
- MST7MDT
- MST
UTC-06:00 Central America
- America/Guatemala
- America/Belize
- America/Costa_Rica
- Pacific/Galapagos
- America/Tegucigalpa
- America/Managua
- America/El_Salvador
- Etc/GMT+6
UTC-06:00 Central Time (US & Canada)
- America/Chicago
- America/Winnipeg
- America/Rainy_River
- America/Rankin_Inlet
- America/Resolute
- Canada/Central
- America/Matamoros
- America/Indiana/Knox
- America/Knox_IN
- America/Indiana/Tell_City
- America/Menominee
- America/North_Dakota/Beulah
- America/North_Dakota/Center
- America/North_Dakota/New_Salem
- US/Indiana-Starke
- CST6CDT
UTC-06:00 Easter Island
- Pacific/Easter
- Chile/EasterIsland
UTC-06:00 Guadalajara, Mexico City, Monterrey
- America/Mexico_City
- America/Bahia_Banderas
- America/Merida
- America/Monterrey
- Mexico/General
UTC-06:00 Saskatchewan
- America/Regina
- America/Swift_Current
- Canada/Saskatchewan
UTC-05:00 Bogota, Lima, Quito, Rio Branco
- America/Bogota
- America/Rio_Branco
- America/Eirunepe
- America/Porto_Acre
- Brazil/Acre
- America/Coral_Harbour
- America/Guayaquil
- America/Jamaica
- Jamaica
- America/Cayman
- America/Panama
- America/Lima
- Etc/GMT+5
- Australia/ACT
- ACT
- EST
UTC-05:00 Chetumal
- America/Cancun
UTC-05:00 Eastern Time (US & Canada)
- America/New_York
- America/Nassau
- America/Toronto
- America/Iqaluit
- America/Montreal
- America/Nipigon
- America/Pangnirtung
- America/Thunder_Bay
- America/Atikokan
- Canada/Eastern
- America/Detroit
- America/Indiana/Petersburg
- America/Indiana/Vincennes
- America/Indiana/Winamac
- America/Kentucky/Monticello
- America/Louisville
- America/Kentucky/Louisville
- US/Michigan
- EST5EDT
UTC-05:00 Haiti
- America/Port-au-Prince
UTC-05:00 Havana
- America/Havana
- Cuba
UTC-05:00 Indiana (East)
- America/Indianapolis
- America/Indiana/Marengo
- America/Indiana/Vevay
- America/Fort_Wayne
- America/Indiana/Indianapolis
- US/East-Indiana
UTC-05:00 Turks and Caicos
- America/Grand_Turk
UTC-04:00 Asuncion
- America/Asuncion
UTC-04:00 Atlantic Time (Canada)
- America/Halifax
- Atlantic/Bermuda
- America/Glace_Bay
- America/Goose_Bay
- America/Moncton
- Canada/Atlantic
- America/Thule
UTC-04:00 Caracas
- America/Caracas
UTC-04:00 Cuiaba
- America/Cuiaba
- America/Campo_Grande
UTC-04:00 Georgetown, La Paz, Manaus, San Juan
- America/La_Paz
- America/Antigua
- America/Anguilla
- America/Aruba
- America/Barbados
- America/St_Barthelemy
- America/Kralendijk
- America/Manaus
- America/Boa_Vista
- America/Porto_Velho
- Brazil/West
- America/Blanc-Sablon
- America/Curacao
- America/Dominica
- America/Santo_Domingo
- America/Grenada
- America/Guadeloupe
- America/Guyana
- America/St_Kitts
- America/St_Lucia
- America/Marigot
- America/Martinique
- America/Montserrat
- America/Puerto_Rico
- America/Lower_Princes
- America/Port_of_Spain
- America/Virgin
- America/St_Vincent
- America/Tortola
- America/St_Thomas
- Etc/GMT+4
UTC-04:00 Santiago
- America/Santiago
- Chile/Continental
UTC-03:30 Newfoundland
- America/St_Johns
- Canada/Newfoundland
UTC-03:00 Araguaina
- America/Araguaina
UTC-03:00 Brasilia
- America/Sao_Paulo
- Brazil/East
UTC-03:00 Cayenne, Fortaleza
- America/Cayenne
- Antarctica/Rothera
- Antarctica/Palmer
- America/Fortaleza
- America/Belem
- America/Maceio
- America/Recife
- America/Santarem
- Atlantic/Stanley
- America/Paramaribo
- Etc/GMT+3
UTC-03:00 City of Buenos Aires
- America/Buenos_Aires
- America/Argentina/La_Rioja
- America/Argentina/Rio_Gallegos
- America/Argentina/Salta
- America/Argentina/San_Juan
- America/Argentina/San_Luis
- America/Argentina/Tucuman
- America/Argentina/Ushuaia
- America/Catamarca
- America/Argentina/Catamarca
- America/Argentina/ComodRivadavia
- America/Cordoba
- America/Argentina/Cordoba
- America/Jujuy
- America/Argentina/Jujuy
- America/Mendoza
- America/Argentina/Mendoza
- America/Argentina/Buenos_Aires
- America/Rosario
UTC-03:00 Greenland
- America/Godthab
UTC-03:00 Montevideo
- America/Montevideo
UTC-03:00 Punta Arenas
- America/Punta_Arenas
UTC-03:00 Saint Pierre and Miquelon
- America/Miquelon
UTC-03:00 Salvador
- America/Bahia
UTC-02:00 Coordinated Universal Time-02
- Etc/GMT+2
- America/Noronha
- Brazil/DeNoronha
- Atlantic/South_Georgia
UTC-01:00 Azores
- Atlantic/Azores
- America/Scoresbysund
UTC-01:00 Cabo Verde Is.
- Atlantic/Cape_Verde
- Etc/GMT+1
UTC+00:00 Dublin, Edinburgh, Lisbon, London
- Europe/London
- Etc/Greenwich
- Europe/Belfast
- GB
- GB-Eire
- Greenwich
- Atlantic/Canary
- Atlantic/Faeroe
- Europe/Guernsey
- America/Danmarkshavn
- Europe/Dublin
- Eire
- Europe/Isle_of_Man
- Europe/Jersey
- Europe/Lisbon
- Portugal
- Atlantic/Madeira
- Atlantic/Faroe
- WET
- Etc/GMT
- Etc/GMT+0
- Etc/GMT-0
- Etc/GMT0
- Etc/UTC
- Etc/UCT
- Etc/Universal
- Etc/Zulu
- GMT
- GMT0
- GMT+0
- GMT-0
- UCT
- UTC
- Universal
- Zulu
- Antarctica/Troll
UTC+00:00 Monrovia, Reykjavik
- Atlantic/Reykjavik
- Iceland
- Africa/Ouagadougou
- Africa/Abidjan
- Africa/Accra
- Africa/Banjul
- Africa/Conakry
- Africa/Bissau
- Africa/Monrovia
- Africa/Bamako
- Africa/Nouakchott
- Atlantic/St_Helena
- Africa/Freetown
- Africa/Dakar
- Africa/Lome
UTC+00:00 Sao Tome
- Africa/Sao_Tome
- Africa/Timbuktu
UTC+01:00 Casablanca
- Africa/Casablanca
- Africa/El_Aaiun
UTC+01:00 Amsterdam, Berlin, Bern, Rome, Stockholm, Vienna
- Europe/Berlin
- Europe/Andorra
- Europe/Vienna
- Europe/Zurich
- Europe/Busingen
- Europe/Gibraltar
- Europe/Rome
- Europe/Vaduz
- Europe/Luxembourg
- Europe/Monaco
- Europe/Malta
- Europe/Amsterdam
- Europe/Oslo
- Europe/Stockholm
- Arctic/Longyearbyen
- Atlantic/Jan_Mayen
- Europe/San_Marino
- Europe/Vatican
UTC+01:00 Belgrade, Bratislava, Budapest, Ljubljana, Prague
- Europe/Budapest
- Europe/Tirane
- Europe/Prague
- Europe/Podgorica
- Europe/Belgrade
- Europe/Ljubljana
- Europe/Bratislava
UTC+01:00 Brussels, Copenhagen, Madrid, Paris
- Europe/Paris
- MET
- Europe/Brussels
- Europe/Copenhagen
- Europe/Madrid
- Africa/Ceuta
UTC+01:00 Sarajevo, Skopje, Warsaw, Zagreb
- Europe/Warsaw
- Poland
- Europe/Sarajevo
- Europe/Zagreb
- Europe/Skopje
UTC+01:00 West Central Africa
- Africa/Lagos
- Africa/Luanda
- Africa/Porto-Novo
- Africa/Kinshasa
- Africa/Bangui
- Africa/Brazzaville
- Africa/Douala
- Africa/Algiers
- Africa/Libreville
- Africa/Malabo
- Africa/Niamey
- Africa/Ndjamena
- Africa/Tunis
- Etc/GMT-1
- CET
UTC+02:00 Amman
- Asia/Amman
UTC+02:00 Athens, Bucharest
- Europe/Bucharest
- Asia/Nicosia
- Asia/Famagusta
- Europe/Athens
- Europe/Nicosia
UTC+02:00 Beirut
- Asia/Beirut
UTC+02:00 Cairo
- Africa/Cairo
- Egypt
UTC+02:00 Chisinau
- Europe/Chisinau
- Europe/Tiraspol
UTC+02:00 Damascus
- Asia/Damascus
UTC+02:00 Gaza, Hebron
- Asia/Hebron
- Asia/Gaza
UTC+02:00 Harare, Pretoria
- Africa/Johannesburg
- Africa/Bujumbura
- Africa/Gaborone
- Africa/Lubumbashi
- Africa/Maseru
- Africa/Blantyre
- Africa/Maputo
- Africa/Kigali
- Africa/Mbabane
- Africa/Lusaka
- Africa/Harare
- Etc/GMT-2
UTC+02:00 Helsinki, Kyiv, Riga, Sofia, Tallinn, Vilnius
- Europe/Kyiv
- Europe/Mariehamn
- Europe/Sofia
- Europe/Tallinn
- Europe/Helsinki
- Europe/Vilnius
- Europe/Riga
- Europe/Uzhgorod
- Europe/Zaporozhye
UTC+02:00 Jerusalem
- Asia/Jerusalem
- Asia/Tel_Aviv
- Israel
UTC+02:00 Kaliningrad
- Europe/Kaliningrad
- EET
UTC+02:00 Khartoum
- Africa/Khartoum
UTC+02:00 Tripoli
- Africa/Tripoli
- Libya
UTC+02:00 Windhoek
- Africa/Windhoek
UTC+03:00 Baghdad
- Asia/Baghdad
UTC+03:00 Istanbul
- Europe/Istanbul
- Asia/Istanbul
- Turkey
UTC+03:00 Kuwait, Riyadh
- Asia/Riyadh
- Asia/Bahrain
- Asia/Kuwait
- Asia/Qatar
- Asia/Aden
UTC+03:00 Minsk
- Europe/Minsk
UTC+03:00 Moscow, St. Petersburg
- Europe/Moscow
- Europe/Kirov
- W-SU
- Europe/Simferopol
UTC+03:00 Nairobi
- Africa/Nairobi
- Antarctica/Syowa
- Africa/Djibouti
- Africa/Asmera
- Africa/Asmara
- Africa/Addis_Ababa
- Indian/Comoro
- Indian/Antananarivo
- Africa/Mogadishu
- Africa/Juba
- Africa/Dar_es_Salaam
- Africa/Kampala
- Indian/Mayotte
- Etc/GMT-3
UTC+03:30 Tehran
- Asia/Tehran
- Iran
UTC+04:00 Abu Dhabi, Muscat
- Asia/Dubai
- Asia/Muscat
- Etc/GMT-4
UTC+04:00 Astrakhan, Ulyanovsk
- Europe/Astrakhan
- Europe/Ulyanovsk
UTC+04:00 Baku
- Asia/Baku
UTC+04:00 Izhevsk, Samara
- Europe/Samara
UTC+04:00 Port Louis
- Indian/Mauritius
- Indian/Reunion
- Indian/Mahe
UTC+04:00 Saratov
- Europe/Saratov
UTC+04:00 Tbilisi
- Asia/Tbilisi
UTC+04:00 Volgograd
- Europe/Volgograd
UTC+04:00 Yerevan
- Asia/Yerevan
UTC+04:30 Kabul
- Asia/Kabul
UTC+05:00 Ashgabat, Tashkent
- Asia/Tashkent
- Antarctica/Mawson
- Asia/Oral
- Asia/Aqtau
- Asia/Aqtobe
- Asia/Atyrau
- Indian/Maldives
- Indian/Kerguelen
- Asia/Dushanbe
- Asia/Ashgabat
- Asia/Ashkhabad
- Asia/Samarkand
- Etc/GMT-5
UTC+05:00 Ekaterinburg
- Asia/Yekaterinburg
UTC+05:00 Islamabad, Karachi
- Asia/Karachi
UTC+05:00 Qyzylorda
- Asia/Qyzylorda
UTC+05:30 Chennai, Kolkata, Mumbai, New Delhi
- Asia/Calcutta
- Asia/Kolkata
UTC+05:30 Sri Jayawardenepura
- Asia/Colombo
UTC+05:45 Kathmandu
- Asia/Katmandu
- Asia/Kathmandu
UTC+06:00 Astana
- Asia/Almaty
- Antarctica/Vostok
- Asia/Urumqi
- Indian/Chagos
- Asia/Bishkek
- Asia/Qostanay
- Etc/GMT-6
UTC+06:00 Dhaka
- Asia/Dhaka
- Asia/Dacca
- Asia/Thimphu
- Asia/Thimbu
UTC+06:00 Omsk
- Asia/Omsk
UTC+06:30 Yangon (Rangoon
- Asia/Rangoon
- Asia/Yangon
- Indian/Cocos
UTC+07:00 Bangkok, Hanoi, Jakarta
- Asia/Bangkok
- Antarctica/Davis
- Indian/Christmas
- Asia/Jakarta
- Asia/Pontianak
- Asia/Phnom_Penh
- Asia/Ho_Chi_Minh
- Asia/Vientiane
- Asia/Saigon
- Etc/GMT-7
UTC+07:00 Barnaul, Gorno-Altaysk
- Asia/Barnaul
UTC+07:00 Hovd
- Asia/Hovd
UTC+07:00 Krasnoyarsk
- Asia/Krasnoyarsk
- Asia/Novokuznetsk
UTC+07:00 Novosibirsk
- Asia/Novosibirsk
UTC+07:00 Tomsk
- Asia/Tomsk
UTC+08:00 Beijing, Chongqing, Hong Kong, Urumqi
- Asia/Shanghai
- Asia/Chongqing
- Asia/Chungking
- Asia/Harbin
- Asia/Kashgar
- PRC
- Asia/Hong_Kong
- Hongkong
- Asia/Macau
- Asia/Macao
UTC+08:00 Irkutsk
- Asia/Irkutsk
UTC+08:00 Kuala Lumpur, Singapore
- Asia/Singapore
- Singapore
- Antarctica/Casey
- Asia/Brunei
- Asia/Makassar
- Asia/Ujung_Pandang
- Asia/Kuala_Lumpur
- Asia/Kuching
- Asia/Manila
- Etc/GMT-8
UTC+08:00 Perth
- Australia/Perth
- Australia/West
UTC+08:00 Taipei
- Asia/Taipei
- ROC
UTC+08:00 Ulaanbaatar
- Asia/Ulaanbaatar
- Asia/Choibalsan
- Asia/Ulan_Bator
UTC+08:45 Eucla
- Australia/Eucla
UTC+09:00 Chita
- Asia/Chita
UTC+09:00 Osaka, Sapporo, Tokyo
- Asia/Tokyo
- Japan
- Asia/Jayapura
- Pacific/Palau
- Asia/Dili
- Etc/GMT-9
UTC+09:00 Pyongyang
- Asia/Pyongyang
UTC+09:00 Seoul
- Asia/Seoul
- ROK
UTC+09:00 Yakutsk
- Asia/Yakutsk
- Asia/Khandyga
UTC+09:30 Adelaide
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/South
- Australia/Yancowinna
UTC+09:30 Darwin
- Australia/Darwin
- Australia/North
UTC+10:00 Brisbane
- Australia/Brisbane
- Australia/Lindeman
- Australia/Queensland
UTC+10:00 Canberra, Melbourne, Sydney
- Australia/Sydney
- Australia/Melbourne
- Australia/Canberra
- Australia/NSW
- Australia/Victoria
UTC+10:00 Guam, Port Moresby
- Pacific/Port_Moresby
- Antarctica/DumontDUrville
- Pacific/Truk
- Pacific/Guam
- Pacific/Chuuk
- Pacific/Yap
- Pacific/Saipan
- Etc/GMT-10
- US/Pacific
- US/Pacific-New
UTC+10:00 Hobart
- Australia/Hobart
- Australia/Currie
- Australia/Hobart
- Australia/Tasmania
UTC+10:00 Vladivostok
- Asia/Vladivostok
- Asia/Ust-Nera
UTC+10:30 Lord Howe Island
- Australia/Lord_Howe
- Australia/LHI
UTC+11:00 Bougainville Island
- Pacific/Bougainville
UTC+11:00 Chokurdakh
- Asia/Srednekolymsk
UTC+11:00 Magadan
- Asia/Magadan
UTC+11:00 Norfolk Island
- Pacific/Norfolk
UTC+11:00 Sakhalin
- Asia/Sakhalin
UTC+11:00 Solomon Is., New Caledonia
- Pacific/Guadalcanal
- Antarctica/Macquarie
- Pacific/Ponape
- Pacific/Kosrae
- Pacific/Pohnpei
- Pacific/Noumea
- Pacific/Efate
- Etc/GMT-11
UTC+12:00 Anadyr, Petropavlovsk-Kamchatsky
- Asia/Kamchatka
- Asia/Anadyr
UTC+12:00 Auckland, Wellington
- Pacific/Auckland
- Antarctica/McMurdo
- Antarctica/South_Pole
- NZ
UTC+12:00 Coordinated Universal Time+12
- Etc/GMT-12
- Pacific/Tarawa
- Pacific/Majuro
- Pacific/Kwajalein
- Kwajalein
- Pacific/Nauru
- Pacific/Funafuti
- Pacific/Wake
- Pacific/Wallis
UTC+12:00 Fiji
- Pacific/Fiji
UTC+12:45 Chatham Islands
- Pacific/Chatham
- NZ-CHAT
UTC+13:00 Coordinated Universal Time+13
- Etc/GMT-13
- Pacific/Enderbury
- Pacific/Fakaofo
UTC+13:00 Nuku'alofa
- Pacific/Tongatapu
UTC+13:00 Samoa
- Pacific/Apia
UTC+14:00 Kiritimati Island
- Pacific/Kiritimati
- Etc/GMT-14