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Limited Availability JavaScript
id: temporal

Temporal

The Temporal API allows you to work with dates, times, time zones, and durations. It is more powerful than the Date API.
Baseline Status: This feature is currently Limited and is missing in at least one major browser engine.
Desktop Browser Engine Support
Google Chrome
144
Supported
Mozilla Firefox
139
Supported
Apple Safari
Unsupported
Microsoft Edge
144
Supported
Mobile Browser Engine Support
Chrome Android
144
Firefox Android
139
Safari iOS
Specifications and References
MDN Browser Compat Data Keys:
javascript.builtins.Date.toTemporalInstant javascript.builtins.Temporal javascript.builtins.Temporal.Duration javascript.builtins.Temporal.Duration.Duration javascript.builtins.Temporal.Duration.abs javascript.builtins.Temporal.Duration.add javascript.builtins.Temporal.Duration.blank javascript.builtins.Temporal.Duration.compare javascript.builtins.Temporal.Duration.days javascript.builtins.Temporal.Duration.from javascript.builtins.Temporal.Duration.hours javascript.builtins.Temporal.Duration.microseconds javascript.builtins.Temporal.Duration.milliseconds javascript.builtins.Temporal.Duration.minutes javascript.builtins.Temporal.Duration.months javascript.builtins.Temporal.Duration.nanoseconds javascript.builtins.Temporal.Duration.negated javascript.builtins.Temporal.Duration.round javascript.builtins.Temporal.Duration.seconds javascript.builtins.Temporal.Duration.sign javascript.builtins.Temporal.Duration.subtract javascript.builtins.Temporal.Duration.toJSON javascript.builtins.Temporal.Duration.toLocaleString javascript.builtins.Temporal.Duration.toString javascript.builtins.Temporal.Duration.total javascript.builtins.Temporal.Duration.valueOf javascript.builtins.Temporal.Duration.weeks javascript.builtins.Temporal.Duration.with javascript.builtins.Temporal.Duration.years javascript.builtins.Temporal.Instant javascript.builtins.Temporal.Instant.Instant javascript.builtins.Temporal.Instant.add javascript.builtins.Temporal.Instant.compare javascript.builtins.Temporal.Instant.epochMilliseconds javascript.builtins.Temporal.Instant.epochNanoseconds javascript.builtins.Temporal.Instant.equals javascript.builtins.Temporal.Instant.from javascript.builtins.Temporal.Instant.fromEpochMilliseconds javascript.builtins.Temporal.Instant.fromEpochNanoseconds javascript.builtins.Temporal.Instant.round javascript.builtins.Temporal.Instant.since javascript.builtins.Temporal.Instant.subtract javascript.builtins.Temporal.Instant.toJSON javascript.builtins.Temporal.Instant.toLocaleString javascript.builtins.Temporal.Instant.toString javascript.builtins.Temporal.Instant.toZonedDateTimeISO javascript.builtins.Temporal.Instant.until javascript.builtins.Temporal.Instant.valueOf javascript.builtins.Temporal.Now javascript.builtins.Temporal.Now.instant javascript.builtins.Temporal.Now.plainDateISO javascript.builtins.Temporal.Now.plainDateTimeISO javascript.builtins.Temporal.Now.plainTimeISO javascript.builtins.Temporal.Now.timeZoneId javascript.builtins.Temporal.Now.zonedDateTimeISO javascript.builtins.Temporal.PlainDate javascript.builtins.Temporal.PlainDate.PlainDate javascript.builtins.Temporal.PlainDate.add javascript.builtins.Temporal.PlainDate.calendarId javascript.builtins.Temporal.PlainDate.compare javascript.builtins.Temporal.PlainDate.day javascript.builtins.Temporal.PlainDate.dayOfWeek javascript.builtins.Temporal.PlainDate.dayOfYear javascript.builtins.Temporal.PlainDate.daysInMonth javascript.builtins.Temporal.PlainDate.daysInWeek javascript.builtins.Temporal.PlainDate.daysInYear javascript.builtins.Temporal.PlainDate.equals javascript.builtins.Temporal.PlainDate.era javascript.builtins.Temporal.PlainDate.eraYear javascript.builtins.Temporal.PlainDate.from javascript.builtins.Temporal.PlainDate.inLeapYear javascript.builtins.Temporal.PlainDate.month javascript.builtins.Temporal.PlainDate.monthCode javascript.builtins.Temporal.PlainDate.monthsInYear javascript.builtins.Temporal.PlainDate.since javascript.builtins.Temporal.PlainDate.subtract javascript.builtins.Temporal.PlainDate.toJSON javascript.builtins.Temporal.PlainDate.toLocaleString javascript.builtins.Temporal.PlainDate.toPlainDateTime javascript.builtins.Temporal.PlainDate.toPlainMonthDay javascript.builtins.Temporal.PlainDate.toPlainYearMonth javascript.builtins.Temporal.PlainDate.toString javascript.builtins.Temporal.PlainDate.toZonedDateTime javascript.builtins.Temporal.PlainDate.until javascript.builtins.Temporal.PlainDate.valueOf javascript.builtins.Temporal.PlainDate.weekOfYear javascript.builtins.Temporal.PlainDate.with javascript.builtins.Temporal.PlainDate.withCalendar javascript.builtins.Temporal.PlainDate.year javascript.builtins.Temporal.PlainDate.yearOfWeek javascript.builtins.Temporal.PlainDateTime javascript.builtins.Temporal.PlainDateTime.PlainDateTime javascript.builtins.Temporal.PlainDateTime.add javascript.builtins.Temporal.PlainDateTime.calendarId javascript.builtins.Temporal.PlainDateTime.compare javascript.builtins.Temporal.PlainDateTime.day javascript.builtins.Temporal.PlainDateTime.dayOfWeek javascript.builtins.Temporal.PlainDateTime.dayOfYear javascript.builtins.Temporal.PlainDateTime.daysInMonth javascript.builtins.Temporal.PlainDateTime.daysInWeek javascript.builtins.Temporal.PlainDateTime.daysInYear javascript.builtins.Temporal.PlainDateTime.equals javascript.builtins.Temporal.PlainDateTime.era javascript.builtins.Temporal.PlainDateTime.eraYear javascript.builtins.Temporal.PlainDateTime.from javascript.builtins.Temporal.PlainDateTime.hour javascript.builtins.Temporal.PlainDateTime.inLeapYear javascript.builtins.Temporal.PlainDateTime.microsecond javascript.builtins.Temporal.PlainDateTime.millisecond javascript.builtins.Temporal.PlainDateTime.minute javascript.builtins.Temporal.PlainDateTime.month javascript.builtins.Temporal.PlainDateTime.monthCode javascript.builtins.Temporal.PlainDateTime.monthsInYear javascript.builtins.Temporal.PlainDateTime.nanosecond javascript.builtins.Temporal.PlainDateTime.round javascript.builtins.Temporal.PlainDateTime.second javascript.builtins.Temporal.PlainDateTime.since javascript.builtins.Temporal.PlainDateTime.subtract javascript.builtins.Temporal.PlainDateTime.toJSON javascript.builtins.Temporal.PlainDateTime.toLocaleString javascript.builtins.Temporal.PlainDateTime.toPlainDate javascript.builtins.Temporal.PlainDateTime.toPlainTime javascript.builtins.Temporal.PlainDateTime.toString javascript.builtins.Temporal.PlainDateTime.toZonedDateTime javascript.builtins.Temporal.PlainDateTime.until javascript.builtins.Temporal.PlainDateTime.valueOf javascript.builtins.Temporal.PlainDateTime.weekOfYear javascript.builtins.Temporal.PlainDateTime.with javascript.builtins.Temporal.PlainDateTime.withCalendar javascript.builtins.Temporal.PlainDateTime.withPlainTime javascript.builtins.Temporal.PlainDateTime.year javascript.builtins.Temporal.PlainDateTime.yearOfWeek javascript.builtins.Temporal.PlainMonthDay javascript.builtins.Temporal.PlainMonthDay.PlainMonthDay javascript.builtins.Temporal.PlainMonthDay.calendarId javascript.builtins.Temporal.PlainMonthDay.day javascript.builtins.Temporal.PlainMonthDay.equals javascript.builtins.Temporal.PlainMonthDay.from javascript.builtins.Temporal.PlainMonthDay.monthCode javascript.builtins.Temporal.PlainMonthDay.toJSON javascript.builtins.Temporal.PlainMonthDay.toLocaleString javascript.builtins.Temporal.PlainMonthDay.toPlainDate javascript.builtins.Temporal.PlainMonthDay.toString javascript.builtins.Temporal.PlainMonthDay.valueOf javascript.builtins.Temporal.PlainMonthDay.with javascript.builtins.Temporal.PlainTime javascript.builtins.Temporal.PlainTime.PlainTime javascript.builtins.Temporal.PlainTime.add javascript.builtins.Temporal.PlainTime.compare javascript.builtins.Temporal.PlainTime.equals javascript.builtins.Temporal.PlainTime.from javascript.builtins.Temporal.PlainTime.hour javascript.builtins.Temporal.PlainTime.microsecond javascript.builtins.Temporal.PlainTime.millisecond javascript.builtins.Temporal.PlainTime.minute javascript.builtins.Temporal.PlainTime.nanosecond javascript.builtins.Temporal.PlainTime.round javascript.builtins.Temporal.PlainTime.second javascript.builtins.Temporal.PlainTime.since javascript.builtins.Temporal.PlainTime.subtract javascript.builtins.Temporal.PlainTime.toJSON javascript.builtins.Temporal.PlainTime.toLocaleString javascript.builtins.Temporal.PlainTime.toString javascript.builtins.Temporal.PlainTime.until javascript.builtins.Temporal.PlainTime.valueOf javascript.builtins.Temporal.PlainTime.with javascript.builtins.Temporal.PlainYearMonth javascript.builtins.Temporal.PlainYearMonth.PlainYearMonth javascript.builtins.Temporal.PlainYearMonth.add javascript.builtins.Temporal.PlainYearMonth.calendarId javascript.builtins.Temporal.PlainYearMonth.compare javascript.builtins.Temporal.PlainYearMonth.daysInMonth javascript.builtins.Temporal.PlainYearMonth.daysInYear javascript.builtins.Temporal.PlainYearMonth.equals javascript.builtins.Temporal.PlainYearMonth.era javascript.builtins.Temporal.PlainYearMonth.eraYear javascript.builtins.Temporal.PlainYearMonth.from javascript.builtins.Temporal.PlainYearMonth.inLeapYear javascript.builtins.Temporal.PlainYearMonth.month javascript.builtins.Temporal.PlainYearMonth.monthCode javascript.builtins.Temporal.PlainYearMonth.monthsInYear javascript.builtins.Temporal.PlainYearMonth.since javascript.builtins.Temporal.PlainYearMonth.subtract javascript.builtins.Temporal.PlainYearMonth.toJSON javascript.builtins.Temporal.PlainYearMonth.toLocaleString javascript.builtins.Temporal.PlainYearMonth.toPlainDate javascript.builtins.Temporal.PlainYearMonth.toString javascript.builtins.Temporal.PlainYearMonth.until javascript.builtins.Temporal.PlainYearMonth.valueOf javascript.builtins.Temporal.PlainYearMonth.with javascript.builtins.Temporal.PlainYearMonth.year javascript.builtins.Temporal.ZonedDateTime javascript.builtins.Temporal.ZonedDateTime.ZonedDateTime javascript.builtins.Temporal.ZonedDateTime.add javascript.builtins.Temporal.ZonedDateTime.calendarId javascript.builtins.Temporal.ZonedDateTime.compare javascript.builtins.Temporal.ZonedDateTime.day javascript.builtins.Temporal.ZonedDateTime.dayOfWeek javascript.builtins.Temporal.ZonedDateTime.dayOfYear javascript.builtins.Temporal.ZonedDateTime.daysInMonth javascript.builtins.Temporal.ZonedDateTime.daysInWeek javascript.builtins.Temporal.ZonedDateTime.daysInYear javascript.builtins.Temporal.ZonedDateTime.epochMilliseconds javascript.builtins.Temporal.ZonedDateTime.epochNanoseconds javascript.builtins.Temporal.ZonedDateTime.equals javascript.builtins.Temporal.ZonedDateTime.era javascript.builtins.Temporal.ZonedDateTime.eraYear javascript.builtins.Temporal.ZonedDateTime.from javascript.builtins.Temporal.ZonedDateTime.getTimeZoneTransition javascript.builtins.Temporal.ZonedDateTime.hour javascript.builtins.Temporal.ZonedDateTime.hoursInDay javascript.builtins.Temporal.ZonedDateTime.inLeapYear javascript.builtins.Temporal.ZonedDateTime.microsecond javascript.builtins.Temporal.ZonedDateTime.millisecond javascript.builtins.Temporal.ZonedDateTime.minute javascript.builtins.Temporal.ZonedDateTime.month javascript.builtins.Temporal.ZonedDateTime.monthCode javascript.builtins.Temporal.ZonedDateTime.monthsInYear javascript.builtins.Temporal.ZonedDateTime.nanosecond javascript.builtins.Temporal.ZonedDateTime.offset javascript.builtins.Temporal.ZonedDateTime.offsetNanoseconds javascript.builtins.Temporal.ZonedDateTime.round javascript.builtins.Temporal.ZonedDateTime.second javascript.builtins.Temporal.ZonedDateTime.since javascript.builtins.Temporal.ZonedDateTime.startOfDay javascript.builtins.Temporal.ZonedDateTime.subtract javascript.builtins.Temporal.ZonedDateTime.timeZoneId javascript.builtins.Temporal.ZonedDateTime.toInstant javascript.builtins.Temporal.ZonedDateTime.toJSON javascript.builtins.Temporal.ZonedDateTime.toLocaleString javascript.builtins.Temporal.ZonedDateTime.toPlainDate javascript.builtins.Temporal.ZonedDateTime.toPlainDateTime javascript.builtins.Temporal.ZonedDateTime.toPlainTime javascript.builtins.Temporal.ZonedDateTime.toString javascript.builtins.Temporal.ZonedDateTime.until javascript.builtins.Temporal.ZonedDateTime.valueOf javascript.builtins.Temporal.ZonedDateTime.weekOfYear javascript.builtins.Temporal.ZonedDateTime.with javascript.builtins.Temporal.ZonedDateTime.withCalendar javascript.builtins.Temporal.ZonedDateTime.withPlainTime javascript.builtins.Temporal.ZonedDateTime.withTimeZone javascript.builtins.Temporal.ZonedDateTime.year javascript.builtins.Temporal.ZonedDateTime.yearOfWeek