The withCalendar() method of Temporal.PlainDate instances returns a new Temporal.PlainDate object representing this date 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's calendarId property.

To replace the date component properties, use the with() method instead.

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.PlainDate object, representing the date specified by the original PlainDate, 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 date = Temporal.PlainDate.from("2021-07-01");
const newDate = date.withCalendar("islamic-umalqura");
console.log(newDate.toLocaleString("en-US", { calendar: "islamic-umalqura" }));
// 11/21/1442 AH

Specifications

Browser compatibility

See also

• Temporal.PlainDate
• Temporal.PlainDate.prototype.with()
• Temporal.PlainDate.from()
• Temporal.PlainDate.prototype.calendarId