The toTemporalInstant() method of Date instances returns a new Temporal.Instant object with the same epochMilliseconds value as this date's timestamp.

Use this method to convert legacy Date values to the Temporal API, then further convert it to other Temporal classes as necessary.

Syntax

toTemporalInstant()

Parameters

None.

Return value

A new Temporal.Instant object with the same epochMilliseconds value as this date's timestamp. Its microsecond and nanosecond components are always 0.

Exceptions

RangeError

Thrown if the date is invalid (it has a timestamp of NaN).

Examples

Using toTemporalInstant()

const legacyDate = new Date("2021-07-01T12:34:56.789Z");
const instant = legacyDate.toTemporalInstant();

// Further convert it to other objects
const zdt = instant.toZonedDateTimeISO("UTC");
const date = zdt.toPlainDate();
console.log(date.toString()); // 2021-07-01

Specifications

Browser compatibility

See also

• Temporal.Instant
• Temporal.ZonedDateTime
• Temporal.Instant.fromEpochMilliseconds()