关于javascript：将日期(UTC)转换为另一个时区的日期(支持DST)


Convert a date (in UTC) to date in another timezone (with support for DST)

问题陈述 - 我需要将UTC格式的日期转换为另一个时区的日期。 其他时区可能支持也可能不支持夏令时。

数据可供我使用：

  • Windows时区ID(例如太平洋标准时间)
  • 该时区的UTC偏移量
  • 时区是否支持夏令时(夏令时)
  • DST UTC偏移量

    • 使用上述数据，我可以将时间转换为所需的时区，但如何检查DST当前是否对该时区有效？ 如果我知道DST是活动的，那么我可以使用DST偏移而不是标准偏移。

    技术 - JavaScript，React-Native(如果需要，我愿意使用moment.js)。

    相关讨论

    momentjs有一个isDST方法，可以与时刻时区结合使用

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    //see https://gist.github.com/danderson00/c03d46dfc38486ea7b06da9f75c7a63f
    let windowsToIANA = {
     "Dateline Standard Time":"Etc/GMT+12",
     "UTC-11":"Etc/GMT+11",
     "Aleutian Standard Time":"America/Adak",
     "Hawaiian Standard Time":"Pacific/Honolulu",
     "Marquesas Standard Time":"Pacific/Marquesas",
     "Alaskan Standard Time":"America/Anchorage",
     "UTC-09":"Etc/GMT+9",
     "Pacific Standard Time (Mexico)":"America/Tijuana",
     "UTC-08":"Etc/GMT+8",
     "Pacific Standard Time":"America/Los_Angeles",
     "US Mountain Standard Time":"America/Phoenix",
     "Mountain Standard Time (Mexico)":"America/Chihuahua",
     "Mountain Standard Time":"America/Denver",
     "Central America Standard Time":"America/Guatemala",
     "Central Standard Time":"America/Chicago",
     "Easter Island Standard Time":"Pacific/Easter",
     "Central Standard Time (Mexico)":"America/Mexico_City",
     "Canada Central Standard Time":"America/Regina",
     "SA Pacific Standard Time":"America/Bogota",
     "Eastern Standard Time (Mexico)":"America/Cancun",
     "Eastern Standard Time":"America/New_York",
     "Haiti Standard Time":"America/Port-au-Prince",
     "Cuba Standard Time":"America/Havana",
     "US Eastern Standard Time":"America/Indianapolis",
     "Paraguay Standard Time":"America/Asuncion",
     "Atlantic Standard Time":"America/Halifax",
     "Venezuela Standard Time":"America/Caracas",
     "Central Brazilian Standard Time":"America/Cuiaba",
     "SA Western Standard Time":"America/La_Paz",
     "Pacific SA Standard Time":"America/Santiago",
     "Turks And Caicos Standard Time":"America/Grand_Turk",
     "Newfoundland Standard Time":"America/St_Johns",
     "Tocantins Standard Time":"America/Araguaina",
     "E. South America Standard Time":"America/Sao_Paulo",
     "SA Eastern Standard Time":"America/Cayenne",
     "Argentina Standard Time":"America/Buenos_Aires",
     "Greenland Standard Time":"America/Godthab",
     "Montevideo Standard Time":"America/Montevideo",
     "Magallanes Standard Time":"America/Punta_Arenas",
     "Saint Pierre Standard Time":"America/Miquelon",
     "Bahia Standard Time":"America/Bahia",
     "UTC-02":"Etc/GMT+2",
     "Azores Standard Time":"Atlantic/Azores",
     "Cape Verde Standard Time":"Atlantic/Cape_Verde",
     "UTC":"Etc/GMT",
     "Morocco Standard Time":"Africa/Casablanca",
     "GMT Standard Time":"Europe/London",
     "Greenwich Standard Time":"Atlantic/Reykjavik",
     "W. Europe Standard Time":"Europe/Berlin",
     "Central Europe Standard Time":"Europe/Budapest",
     "Romance Standard Time":"Europe/Paris",
     "Central European Standard Time":"Europe/Warsaw",
     "W. Central Africa Standard Time":"Africa/Lagos",
     "Jordan Standard Time":"Asia/Amman",
     "GTB Standard Time":"Europe/Bucharest",
     "Middle East Standard Time":"Asia/Beirut",
     "Egypt Standard Time":"Africa/Cairo",
     "E. Europe Standard Time":"Europe/Chisinau",
     "Syria Standard Time":"Asia/Damascus",
     "West Bank Standard Time":"Asia/Hebron",
     "South Africa Standard Time":"Africa/Johannesburg",
     "FLE Standard Time":"Europe/Kiev",
     "Israel Standard Time":"Asia/Jerusalem",
     "Kaliningrad Standard Time":"Europe/Kaliningrad",
     "Sudan Standard Time":"Africa/Khartoum",
     "Libya Standard Time":"Africa/Tripoli",
     "Namibia Standard Time":"Africa/Windhoek",
     "Arabic Standard Time":"Asia/Baghdad",
     "Turkey Standard Time":"Europe/Istanbul",
     "Arab Standard Time":"Asia/Riyadh",
     "Belarus Standard Time":"Europe/Minsk",
     "Russian Standard Time":"Europe/Moscow",
     "E. Africa Standard Time":"Africa/Nairobi",
     "Iran Standard Time":"Asia/Tehran",
     "Arabian Standard Time":"Asia/Dubai",
     "Astrakhan Standard Time":"Europe/Astrakhan",
     "Azerbaijan Standard Time":"Asia/Baku",
     "Russia Time Zone 3":"Europe/Samara",
     "Mauritius Standard Time":"Indian/Mauritius",
     "Saratov Standard Time":"Europe/Saratov",
     "Georgian Standard Time":"Asia/Tbilisi",
     "Caucasus Standard Time":"Asia/Yerevan",
     "Afghanistan Standard Time":"Asia/Kabul",
     "West Asia Standard Time":"Asia/Tashkent",
     "Ekaterinburg Standard Time":"Asia/Yekaterinburg",
     "Pakistan Standard Time":"Asia/Karachi",
     "India Standard Time":"Asia/Calcutta",
     "Sri Lanka Standard Time":"Asia/Colombo",
     "Nepal Standard Time":"Asia/Katmandu",
     "Central Asia Standard Time":"Asia/Almaty",
     "Bangladesh Standard Time":"Asia/Dhaka",
     "Omsk Standard Time":"Asia/Omsk",
     "Myanmar Standard Time":"Asia/Rangoon",
     "SE Asia Standard Time":"Asia/Bangkok",
     "Altai Standard Time":"Asia/Barnaul",
     "W. Mongolia Standard Time":"Asia/Hovd",
     "North Asia Standard Time":"Asia/Krasnoyarsk",
     "N. Central Asia Standard Time":"Asia/Novosibirsk",
     "Tomsk Standard Time":"Asia/Tomsk",
     "China Standard Time":"Asia/Shanghai",
     "North Asia East Standard Time":"Asia/Irkutsk",
     "Singapore Standard Time":"Asia/Singapore",
     "W. Australia Standard Time":"Australia/Perth",
     "Taipei Standard Time":"Asia/Taipei",
     "Ulaanbaatar Standard Time":"Asia/Ulaanbaatar",
     "Aus Central W. Standard Time":"Australia/Eucla",
     "Transbaikal Standard Time":"Asia/Chita",
     "Tokyo Standard Time":"Asia/Tokyo",
     "North Korea Standard Time":"Asia/Pyongyang",
     "Korea Standard Time":"Asia/Seoul",
     "Yakutsk Standard Time":"Asia/Yakutsk",
     "Cen. Australia Standard Time":"Australia/Adelaide",
     "AUS Central Standard Time":"Australia/Darwin",
     "E. Australia Standard Time":"Australia/Brisbane",
     "AUS Eastern Standard Time":"Australia/Sydney",
     "West Pacific Standard Time":"Pacific/Port_Moresby",
     "Tasmania Standard Time":"Australia/Hobart",
     "Vladivostok Standard Time":"Asia/Vladivostok",
     "Lord Howe Standard Time":"Australia/Lord_Howe",
     "Bougainville Standard Time":"Pacific/Bougainville",
     "Russia Time Zone 10":"Asia/Srednekolymsk",
     "Magadan Standard Time":"Asia/Magadan",
     "Norfolk Standard Time":"Pacific/Norfolk",
     "Sakhalin Standard Time":"Asia/Sakhalin",
     "Central Pacific Standard Time":"Pacific/Guadalcanal",
     "Russia Time Zone 11":"Asia/Kamchatka",
     "New Zealand Standard Time":"Pacific/Auckland",
     "UTC+12":"Etc/GMT-12",
     "Fiji Standard Time":"Pacific/Fiji",
     "Chatham Islands Standard Time":"Pacific/Chatham",
     "UTC+13":"Etc/GMT-13",
     "Tonga Standard Time":"Pacific/Tongatapu",
     "Samoa Standard Time":"Pacific/Apia",
     "Line Islands Standard Time":"Pacific/Kiritimati"
    }
    //create link
    Object.entries(windowsToIANA).forEach(([win, IANA]) => {
       moment.tz.link(`${IANA}|${win}`);
    })

    var newYork    = moment.tz("2014-01-01 12:00","Eastern Standard Time");
    var london = moment.tz("2014-06-01 12:00","GMT Standard Time");
    console.log(newYork.format('ha z'))
    console.log(newYork.isDST())
    console.log(london.format('ha z'))
    console.log(london.isDST())
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    <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js">
    <script src="https://cdnjs.cloudflare.com/ajax/libs/moment-timezone/0.5.21/moment-timezone-with-data.min.js">

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