在 JavaScript 中创建特定时区的日期对象并将其转换为 UTC

function createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  parsableDateWithoutTimeZoneOffset,
  ianaTimeZoneName,
) {
  const formatConfig = {
    year: 'numeric',
    month: '2-digit',
    day: '2-digit',
    hour12: false,
    hour: '2-digit',
    minute: '2-digit',
    timeZone: 'UTC',
  };
  const date = new Date(parsableDateWithoutTimeZoneOffset);
  const format = new Intl.DateTimeFormat('en', {
    ...formatConfig,
    weekday: 'short',
    month: 'long',
    second: '2-digit',
    timeZone: ianaTimeZoneName,
    timeZoneName: 'longOffset',
  }).format(date);

  let [_, offsetHours = 0, offsetMinutes = 0] = format
    .match(/([+-]\d{2}):(\d{2})$/) ?? [];

  offsetMinutes = (parseInt(offsetHours, 10) * 60)
    + parseInt(offsetMinutes, 10)
    + date.getTimezoneOffset();

  // return new Date(
  //   date.getTime() - (offsetMinutes * 60000)
  // )
  // .toUTCString();

  return new Intl.DateTimeFormat('lt', formatConfig)
    .format(date.getTime() - (offsetMinutes * 60000));
}

console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Asia/Singapore'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Asia/Singapore'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Asia/Kabul'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Asia/Kabul'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Asia/Istanbul'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Asia/Istanbul'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Europe/Amsterdam'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Europe/Amsterdam'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'UTC'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'UTC'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'America/Jamaica'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'America/Jamaica'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'America/Anchorage'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'America/Anchorage'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Pacific/Marquesas'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Pacific/Marquesas'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Pacific/Honolulu'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Pacific/Honolulu'
));
console.log(`createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Pacific/Chatham'
) ...`, createCustomUTCDateStringFromLocalDateAndTimeZoneName(
  '2022-05-06T00:00', 'Pacific/Chatham'
));

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