The withCalendar() method of Temporal.ZonedDateTime instances returns a new Temporal.ZonedDateTime object representing this date-time interpreted in the new calendar system. Because all Temporal objects are designed to be immutable, this method essentially functions as the setter for the date-time's calendarId property.

To replace the date-time component properties, use the with() method. To replace its time zone, use the withTimeZone() method.

Syntax

withCalendar(calendar)

Parameters

calendar

A string that corresponds to the calendarId property. See Intl.supportedValuesOf() for a list of commonly supported calendar types.

Return value

A new Temporal.ZonedDateTime object, representing the date-time specified by the original ZonedDateTime, interpreted in the new calendar system.

Exceptions

TypeError

Thrown if calendar is not a string.

RangeError

Thrown if calendar is not a valid calendar identifier.

Examples

Using withCalendar()

const zdt = Temporal.ZonedDateTime.from(
  "2021-07-01T12:34:56[America/New_York]",
);
const newZDT = zdt.withCalendar("islamic-umalqura");
console.log(newZDT.toLocaleString("en-US", { calendar: "islamic-umalqura" }));
// 11/21/1442 AH, 12:34:56 PM EDT

Specifications

Browser compatibility

See also

• Temporal.ZonedDateTime
• Temporal.ZonedDateTime.prototype.with()
• Temporal.ZonedDateTime.prototype.withTimeZone()
• Temporal.ZonedDateTime.prototype.withPlainTime()
• Temporal.ZonedDateTime.from()
• Temporal.ZonedDateTime.prototype.calendarId