Function fromAbsolute

packages/@internationalized/date/src/conversion.ts:226–249

(ms: number, timeZone: string)

 * Takes a Unix epoch (milliseconds since 1970) and converts it to the provided time zone.
 */
export function fromAbsolute(ms: number, timeZone: string): ZonedDateTime {
  let offset = getTimeZoneOffset(ms, timeZone);
  let date = new Date(ms + offset);
  let year = date.getUTCFullYear();
  let month = date.getUTCMonth() + 1;
  let day = date.getUTCDate();
  let hour = date.getUTCHours();
  let minute = date.getUTCMinutes();
  let second = date.getUTCSeconds();
  let millisecond = date.getUTCMilliseconds();

  return new ZonedDateTime(
    year < 1 ? 'BC' : 'AD',
    year < 1 ? -year + 1 : year,
    month,
    day,
    timeZone,
    offset,
    hour,
    minute,
    second,
    millisecond
  );
}

/**
 * Takes a `Date` object and converts it to the provided time zone.