Simple Date wrapper with timezone
npm install tzdtimport { TzDate } from 'tzdt'
import 'tzdt/lib/timezones/Asia/Tokyo'
const utc = new TzDate('2020-12-31T15:30:20Z')
console.log(utc.getFullYear()) //2020
console.log(utc.toISOString()) //'2020-12-31T15:30:20.000Z'
const jst = new TzDate(utc, 'Asia/Tokyo')
console.log(jst.getFullYear()) //2021
console.log(jst.toISOString()) //'2021-01-01T00:30:20.000+09:00'import { TzDate } from 'tzdt'
import 'tzdt/lib/timezones/UTC'
import 'tzdt/lib/timezones/Asia/Tokyo'
const date = new Date()
const utc1 = new TzDate()
const utc2 = new TzDate('UTC')
const utc3 = new TzDate(date)
const utc4 = new TzDate(date, 'UTC')
const utc5 = new TzDate(date, 0)
const utc6 = new TzDate(utc1)
const utc7 = new TzDate(utc1, 'UTC')
const utc8 = new TzDate(utc1, 0)
const utc9 = new TzDate('2021-01-01T00:00:00Z')
const utc10 = new TzDate('2021-01-01T00:00:00Z', 'UTC')
const utc11 = new TzDate('2021-01-01T00:00:00Z', 0)
const utc12 = new TzDate(1600000000000, 'UTC')
const jst1 = new TzDate('Asia/Tokyo')
const jst2 = new TzDate(date, 'Asia/Tokyo')
const jst3 = new TzDate(date, 540)
const jst4 = new TzDate(utc1, 'Asia/Tokyo')
const jst5 = new TzDate(utc1, 540)
const jst6 = new TzDate('2021-01-01T00:00:00Z', 'Asia/Tokyo')
const jst7 = new TzDate('2021-01-01T00:00:00Z', 540)
const jst8 = new TzDate(1600000000000, 540)| Timezone | Offset minutes |
|---|---|
| UTC | 0 |
| Africa/Abidjan | 0 |
| Africa/Accra | 0 |
| Africa/Addis_Ababa | 180 |
| Africa/Algiers | 60 |
| Africa/Asmara | 180 |
| Africa/Bamako | 0 |
| Africa/Bangui | 60 |
| Africa/Banjul | 0 |
| Africa/Bissau | 0 |
| Africa/Blantyre | 120 |
| Africa/Brazzaville | 60 |
| Africa/Bujumbura | 120 |
| Africa/Cairo | 120 |
| Africa/Casablanca | 60 |
| Africa/Ceuta | 60 |
| Africa/Conakry | 0 |
| Africa/Dakar | 0 |
| Africa/Dar_es_Salaam | 180 |
| Africa/Djibouti | 180 |
| Africa/Douala | 60 |
| Africa/El_Aaiun | 60 |
| Africa/Freetown | 0 |
| Africa/Gaborone | 120 |
| Africa/Harare | 120 |
| Africa/Johannesburg | 120 |
| Africa/Juba | 120 |
| Africa/Kampala | 180 |
| Africa/Khartoum | 120 |
| Africa/Kigali | 120 |
| Africa/Kinshasa | 60 |
| Africa/Lagos | 60 |
| Africa/Libreville | 60 |
| Africa/Lome | 0 |
| Africa/Luanda | 60 |
| Africa/Lubumbashi | 120 |
| Africa/Lusaka | 120 |
| Africa/Malabo | 60 |
| Africa/Maputo | 120 |
| Africa/Maseru | 120 |
| Africa/Mbabane | 120 |
| Africa/Mogadishu | 180 |
| Africa/Monrovia | 0 |
| Africa/Nairobi | 180 |
| Africa/Ndjamena | 60 |
| Africa/Niamey | 60 |
| Africa/Nouakchott | 0 |
| Africa/Ouagadougou | 0 |
| Africa/Porto-Novo | 60 |
| Africa/Sao_Tome | 0 |
| Africa/Tripoli | 120 |
| Africa/Tunis | 60 |
| Africa/Windhoek | 120 |
| America/Adak | -600 |
| America/Anchorage | -540 |
| America/Anguilla | -240 |
| America/Antigua | -240 |
| America/Araguaina | -180 |
| America/Argentina/Buenos_Aires | -180 |
| America/Argentina/Catamarca | -180 |
| America/Argentina/Cordoba | -180 |
| America/Argentina/Jujuy | -180 |
| America/Argentina/La_Rioja | -180 |
| America/Argentina/Mendoza | -180 |
| America/Argentina/Rio_Gallegos | -180 |
| America/Argentina/Salta | -180 |
| America/Argentina/San_Juan | -180 |
| America/Argentina/San_Luis | -180 |
| America/Argentina/Tucuman | -180 |
| America/Argentina/Ushuaia | -180 |
| America/Aruba | -240 |
| America/Asuncion | -240 |
| America/Atikokan | -300 |
| America/Bahia | -180 |
| America/Bahia_Banderas | -360 |
| America/Barbados | -240 |
| America/Belem | -180 |
| America/Belize | -360 |
| America/Blanc-Sablon | -240 |
| America/Boa_Vista | -240 |
| America/Bogota | -300 |
| America/Boise | -420 |
| America/Cambridge_Bay | -420 |
| America/Campo_Grande | -240 |
| America/Cancun | -300 |
| America/Caracas | -240 |
| America/Cayenne | -180 |
| America/Cayman | -300 |
| America/Chicago | -360 |
| America/Chihuahua | -420 |
| America/Costa_Rica | -360 |
| America/Creston | -420 |
| America/Cuiaba | -240 |
| America/Curacao | -240 |
| America/Danmarkshavn | 0 |
| America/Dawson | -420 |
| America/Dawson_Creek | -420 |
| America/Denver | -420 |
| America/Detroit | -300 |
| America/Dominica | -240 |
| America/Edmonton | -420 |
| America/Eirunepe | -300 |
| America/El_Salvador | -360 |
| America/Fort_Nelson | -420 |
| America/Fortaleza | -180 |
| America/Glace_Bay | -240 |
| America/Goose_Bay | -240 |
| America/Grand_Turk | -300 |
| America/Grenada | -240 |
| America/Guadeloupe | -240 |
| America/Guatemala | -360 |
| America/Guayaquil | -300 |
| America/Guyana | -240 |
| America/Halifax | -240 |
| America/Havana | -300 |
| America/Hermosillo | -420 |
| America/Indiana/Indianapolis | -300 |
| America/Indiana/Knox | -360 |
| America/Indiana/Marengo | -300 |
| America/Indiana/Petersburg | -300 |
| America/Indiana/Tell_City | -360 |
| America/Indiana/Vevay | -300 |
| America/Indiana/Vincennes | -300 |
| America/Indiana/Winamac | -300 |
| America/Inuvik | -420 |
| America/Iqaluit | -300 |
| America/Jamaica | -300 |
| America/Juneau | -540 |
| America/Kentucky/Louisville | -300 |
| America/Kentucky/Monticello | -300 |
| America/Kralendijk | -240 |
| America/La_Paz | -240 |
| America/Lima | -300 |
| America/Los_Angeles | -480 |
| America/Lower_Princes | -240 |
| America/Maceio | -180 |
| America/Managua | -360 |
| America/Manaus | -240 |
| America/Marigot | -240 |
| America/Martinique | -240 |
| America/Matamoros | -360 |
| America/Mazatlan | -420 |
| America/Menominee | -360 |
| America/Merida | -360 |
| America/Metlakatla | -540 |
| America/Mexico_City | -360 |
| America/Miquelon | -180 |
| America/Moncton | -240 |
| America/Monterrey | -360 |
| America/Montevideo | -180 |
| America/Montserrat | -240 |
| America/Nassau | -300 |
| America/New_York | -300 |
| America/Nipigon | -300 |
| America/Nome | -540 |
| America/Noronha | -120 |
| America/North_Dakota/Beulah | -360 |
| America/North_Dakota/Center | -360 |
| America/North_Dakota/New_Salem | -360 |
| America/Nuuk | -180 |
| America/Ojinaga | -420 |
| America/Panama | -300 |
| America/Pangnirtung | -300 |
| America/Paramaribo | -180 |
| America/Phoenix | -420 |
| America/Port-au-Prince | -300 |
| America/Port_of_Spain | -240 |
| America/Porto_Velho | -240 |
| America/Puerto_Rico | -240 |
| America/Punta_Arenas | -180 |
| America/Rainy_River | -360 |
| America/Rankin_Inlet | -360 |
| America/Recife | -180 |
| America/Regina | -360 |
| America/Resolute | -360 |
| America/Rio_Branco | -300 |
| America/Santarem | -180 |
| America/Santiago | -240 |
| America/Santo_Domingo | -240 |
| America/Sao_Paulo | -180 |
| America/Scoresbysund | -60 |
| America/Sitka | -540 |
| America/St_Barthelemy | -240 |
| America/St_Johns | -150 |
| America/St_Kitts | -240 |
| America/St_Lucia | -240 |
| America/St_Thomas | -240 |
| America/St_Vincent | -240 |
| America/Swift_Current | -360 |
| America/Tegucigalpa | -360 |
| America/Thule | -240 |
| America/Thunder_Bay | -300 |
| America/Tijuana | -480 |
| America/Toronto | -300 |
| America/Tortola | -240 |
| America/Vancouver | -480 |
| America/Whitehorse | -420 |
| America/Winnipeg | -360 |
| America/Yakutat | -540 |
| America/Yellowknife | -420 |
| Antarctica/Casey | 660 |
| Antarctica/Davis | 420 |
| Antarctica/DumontDUrville | 600 |
| Antarctica/Macquarie | 600 |
| Antarctica/Mawson | 300 |
| Antarctica/McMurdo | 720 |
| Antarctica/Palmer | -180 |
| Antarctica/Rothera | -180 |
| Antarctica/Syowa | 180 |
| Antarctica/Troll | 0 |
| Antarctica/Vostok | 360 |
| Arctic/Longyearbyen | 60 |
| Asia/Aden | 180 |
| Asia/Almaty | 360 |
| Asia/Amman | 120 |
| Asia/Anadyr | 720 |
| Asia/Aqtau | 300 |
| Asia/Aqtobe | 300 |
| Asia/Ashgabat | 300 |
| Asia/Atyrau | 300 |
| Asia/Baghdad | 180 |
| Asia/Bahrain | 180 |
| Asia/Baku | 240 |
| Asia/Bangkok | 420 |
| Asia/Barnaul | 420 |
| Asia/Beirut | 120 |
| Asia/Bishkek | 360 |
| Asia/Brunei | 480 |
| Asia/Chita | 540 |
| Asia/Choibalsan | 480 |
| Asia/Colombo | 330 |
| Asia/Damascus | 120 |
| Asia/Dhaka | 360 |
| Asia/Dili | 540 |
| Asia/Dubai | 240 |
| Asia/Dushanbe | 300 |
| Asia/Famagusta | 120 |
| Asia/Gaza | 120 |
| Asia/Hebron | 120 |
| Asia/Ho_Chi_Minh | 420 |
| Asia/Hong_Kong | 480 |
| Asia/Hovd | 420 |
| Asia/Irkutsk | 480 |
| Asia/Istanbul | 180 |
| Asia/Jakarta | 420 |
| Asia/Jayapura | 540 |
| Asia/Jerusalem | 120 |
| Asia/Kabul | 270 |
| Asia/Kamchatka | 720 |
| Asia/Karachi | 300 |
| Asia/Kathmandu | 345 |
| Asia/Khandyga | 540 |
| Asia/Kolkata | 330 |
| Asia/Krasnoyarsk | 420 |
| Asia/Kuala_Lumpur | 480 |
| Asia/Kuching | 480 |
| Asia/Kuwait | 180 |
| Asia/Macau | 480 |
| Asia/Magadan | 660 |
| Asia/Makassar | 480 |
| Asia/Manila | 480 |
| Asia/Muscat | 240 |
| Asia/Nicosia | 120 |
| Asia/Novokuznetsk | 420 |
| Asia/Novosibirsk | 420 |
| Asia/Omsk | 360 |
| Asia/Oral | 300 |
| Asia/Phnom_Penh | 420 |
| Asia/Pontianak | 420 |
| Asia/Pyongyang | 540 |
| Asia/Qatar | 180 |
| Asia/Qostanay | 360 |
| Asia/Qyzylorda | 300 |
| Asia/Riyadh | 180 |
| Asia/Sakhalin | 660 |
| Asia/Samarkand | 300 |
| Asia/Seoul | 540 |
| Asia/Shanghai | 480 |
| Asia/Singapore | 480 |
| Asia/Srednekolymsk | 660 |
| Asia/Taipei | 480 |
| Asia/Tashkent | 300 |
| Asia/Tbilisi | 240 |
| Asia/Tehran | 210 |
| Asia/Thimphu | 360 |
| Asia/Tokyo | 540 |
| Asia/Tomsk | 420 |
| Asia/Ulaanbaatar | 480 |
| Asia/Urumqi | 360 |
| Asia/Ust-Nera | 600 |
| Asia/Vientiane | 420 |
| Asia/Vladivostok | 600 |
| Asia/Yakutsk | 540 |
| Asia/Yangon | 390 |
| Asia/Yekaterinburg | 300 |
| Asia/Yerevan | 240 |
| Atlantic/Azores | -60 |
| Atlantic/Bermuda | -240 |
| Atlantic/Canary | 0 |
| Atlantic/Cape_Verde | -60 |
| Atlantic/Faroe | 0 |
| Atlantic/Madeira | 0 |
| Atlantic/Reykjavik | 0 |
| Atlantic/South_Georgia | -120 |
| Atlantic/St_Helena | 0 |
| Atlantic/Stanley | -180 |
| Australia/Adelaide | 570 |
| Australia/Brisbane | 600 |
| Australia/Broken_Hill | 570 |
| Australia/Darwin | 570 |
| Australia/Eucla | 525 |
| Australia/Hobart | 600 |
| Australia/Lindeman | 600 |
| Australia/Lord_Howe | 630 |
| Australia/Melbourne | 600 |
| Australia/Perth | 480 |
| Australia/Sydney | 600 |
| Etc/GMT | 0 |
| Etc/GMT+0 | 0 |
| Etc/GMT+1 | -60 |
| Etc/GMT+10 | -600 |
| Etc/GMT+11 | -660 |
| Etc/GMT+12 | -720 |
| Etc/GMT+2 | -120 |
| Etc/GMT+3 | -180 |
| Etc/GMT+4 | -240 |
| Etc/GMT+5 | -300 |
| Etc/GMT+6 | -360 |
| Etc/GMT+7 | -420 |
| Etc/GMT+8 | -480 |
| Etc/GMT+9 | -540 |
| Etc/GMT-0 | 0 |
| Etc/GMT-1 | 60 |
| Etc/GMT-10 | 600 |
| Etc/GMT-11 | 660 |
| Etc/GMT-12 | 720 |
| Etc/GMT-13 | 780 |
| Etc/GMT-14 | 840 |
| Etc/GMT-2 | 120 |
| Etc/GMT-3 | 180 |
| Etc/GMT-4 | 240 |
| Etc/GMT-5 | 300 |
| Etc/GMT-6 | 360 |
| Etc/GMT-7 | 420 |
| Etc/GMT-8 | 480 |
| Etc/GMT-9 | 540 |
| Etc/GMT0 | 0 |
| Etc/UTC | 0 |
| Europe/Amsterdam | 60 |
| Europe/Andorra | 60 |
| Europe/Astrakhan | 240 |
| Europe/Athens | 120 |
| Europe/Belgrade | 60 |
| Europe/Berlin | 60 |
| Europe/Bratislava | 60 |
| Europe/Brussels | 60 |
| Europe/Bucharest | 120 |
| Europe/Budapest | 60 |
| Europe/Busingen | 60 |
| Europe/Chisinau | 120 |
| Europe/Copenhagen | 60 |
| Europe/Dublin | 60 |
| Europe/Gibraltar | 60 |
| Europe/Guernsey | 0 |
| Europe/Helsinki | 120 |
| Europe/Isle_of_Man | 0 |
| Europe/Istanbul | 180 |
| Europe/Jersey | 0 |
| Europe/Kaliningrad | 120 |
| Europe/Kiev | 120 |
| Europe/Kirov | 180 |
| Europe/Lisbon | 0 |
| Europe/Ljubljana | 60 |
| Europe/London | 0 |
| Europe/Luxembourg | 60 |
| Europe/Madrid | 60 |
| Europe/Malta | 60 |
| Europe/Mariehamn | 120 |
| Europe/Minsk | 180 |
| Europe/Monaco | 60 |
| Europe/Moscow | 180 |
| Europe/Nicosia | 120 |
| Europe/Oslo | 60 |
| Europe/Paris | 60 |
| Europe/Podgorica | 60 |
| Europe/Prague | 60 |
| Europe/Riga | 120 |
| Europe/Rome | 60 |
| Europe/Samara | 240 |
| Europe/San_Marino | 60 |
| Europe/Sarajevo | 60 |
| Europe/Saratov | 240 |
| Europe/Simferopol | 180 |
| Europe/Skopje | 60 |
| Europe/Sofia | 120 |
| Europe/Stockholm | 60 |
| Europe/Tallinn | 120 |
| Europe/Tirane | 60 |
| Europe/Ulyanovsk | 240 |
| Europe/Uzhgorod | 120 |
| Europe/Vaduz | 60 |
| Europe/Vatican | 60 |
| Europe/Vienna | 60 |
| Europe/Vilnius | 120 |
| Europe/Volgograd | 180 |
| Europe/Warsaw | 60 |
| Europe/Zagreb | 60 |
| Europe/Zaporozhye | 120 |
| Europe/Zurich | 60 |
| Factory | 0 |
| GMT | 0 |
| Indian/Antananarivo | 180 |
| Indian/Chagos | 360 |
| Indian/Christmas | 420 |
| Indian/Cocos | 390 |
| Indian/Comoro | 180 |
| Indian/Kerguelen | 300 |
| Indian/Mahe | 240 |
| Indian/Maldives | 300 |
| Indian/Mauritius | 240 |
| Indian/Mayotte | 180 |
| Indian/Reunion | 240 |
| Pacific/Apia | 780 |
| Pacific/Auckland | 720 |
| Pacific/Bougainville | 660 |
| Pacific/Chatham | 765 |
| Pacific/Chuuk | 600 |
| Pacific/Easter | -360 |
| Pacific/Efate | 660 |
| Pacific/Enderbury | 780 |
| Pacific/Fakaofo | 780 |
| Pacific/Fiji | 720 |
| Pacific/Funafuti | 720 |
| Pacific/Galapagos | -360 |
| Pacific/Gambier | -540 |
| Pacific/Guadalcanal | 660 |
| Pacific/Guam | 600 |
| Pacific/Honolulu | -600 |
| Pacific/Kiritimati | 840 |
| Pacific/Kosrae | 660 |
| Pacific/Kwajalein | 720 |
| Pacific/Majuro | 720 |
| Pacific/Marquesas | -510 |
| Pacific/Midway | -660 |
| Pacific/Nauru | 720 |
| Pacific/Niue | -660 |
| Pacific/Norfolk | 660 |
| Pacific/Noumea | 660 |
| Pacific/Pago_Pago | -660 |
| Pacific/Palau | 540 |
| Pacific/Pitcairn | -480 |
| Pacific/Pohnpei | 660 |
| Pacific/Port_Moresby | 600 |
| Pacific/Rarotonga | -600 |
| Pacific/Saipan | 600 |
| Pacific/Tahiti | -600 |
| Pacific/Tarawa | 720 |
| Pacific/Tongatapu | 780 |
| Pacific/Wake | 720 |
| Pacific/Wallis | 720 |