The Temporal.Instant.from() static method creates a new Temporal.Instant object from another Temporal.Instant object, or an RFC 9557 string.

Syntax

Temporal.Instant.from(info)

Parameters

info

One of the following:

• A Temporal.Instant instance, which creates a copy of the instance.
• An RFC 9557 string containing a date, time, and time zone offset. The time zone name is ignored; only the offset is used.

Return value

A new Temporal.Instant object representing the instant in time specified by info.

Exceptions

TypeError

Thrown if info is not a Temporal.Instant instance or a string.

RangeError

Thrown in one of the following cases:

• The string is not a valid RFC 9557 string.
• The info is not in the representable range, which is ±10⁸ days, or about ±273,972.6 years, from the Unix epoch.

Examples

Creating an instant from a string

const instant = Temporal.Instant.from("1970-01-01T00Z");
console.log(instant.toString()); // 1970-01-01T00:00:00Z

const instant2 = Temporal.Instant.from("1970-01-01T00+08:00");
console.log(instant2.toString()); // 1969-12-31T16:00:00Z

// America/New_York is UTC-5 in January 1970, not UTC+8
const instant3 = Temporal.Instant.from("1970-01-01T00+08:00[America/New_York]");
console.log(instant3.toString()); // 1969-12-31T16:00:00Z; the time zone name is ignored

Creating an instant from another instant

const instant = Temporal.Instant.from("1970-01-01T00Z");
const instant2 = Temporal.Instant.from(instant);
console.log(instant2.toString()); // 1970-01-01T00:00:00Z

Specifications

Browser compatibility

See also

• Temporal.Instant
• Temporal.Instant.fromEpochMilliseconds()
• Temporal.Instant.fromEpochNanoseconds()