Function offsetToString

packages/@internationalized/date/src/string.ts:237–249

(offset: number)

}

function offsetToString(offset: number) {
  let sign = Math.sign(offset) < 0 ? '-' : '+';
  offset = Math.abs(offset);
  let offsetHours = Math.floor(offset / (60 * 60 * 1000));
  let offsetMinutes = Math.floor((offset % (60 * 60 * 1000)) / (60 * 1000));
  let offsetSeconds = Math.floor(((offset % (60 * 60 * 1000)) % (60 * 1000)) / 1000);
  let stringOffset = `${sign}${String(offsetHours).padStart(2, '0')}:${String(offsetMinutes).padStart(2, '0')}`;
  if (offsetSeconds !== 0) {
    stringOffset += `:${String(offsetSeconds).padStart(2, '0')}`;
  }

  return stringOffset;
}

export function zonedDateTimeToString(date: ZonedDateTime): string {
  return `${dateTimeToString(date)}${offsetToString(date.offset)}[${date.timeZone}]`;