Markdown Temporal API to do list template

temporal-api-todo-list.md

Temporal API to do list

This list was created by transformation of the page source of Temporal proposal version Stage 3 Draft / December 11, 2024

1 The Temporal Object

1.1 Value Properties of the Temporal Object

• 1.1.1 Temporal [ %Symbol.toStringTag% ]

1.2 Constructor Properties of the Temporal Object

• 1.2.1 Temporal.Instant ( . . . )
• 1.2.2 Temporal.PlainDateTime ( . . . )
• 1.2.3 Temporal.PlainDate ( . . . )
• 1.2.4 Temporal.PlainTime ( . . . )
• 1.2.5 Temporal.PlainYearMonth ( . . . )
• 1.2.6 Temporal.PlainMonthDay ( . . . )
• 1.2.7 Temporal.Duration ( . . . )
• 1.2.8 Temporal.ZonedDateTime ( . . . )

1.3 Other Properties of the Temporal Object

• 1.3.1 Temporal.Now

2 The Temporal.Now Object

2.1 Value Properties of the Temporal.Now Object

• 2.1.1 Temporal.Now [ %Symbol.toStringTag% ]

2.2 Function Properties of the Temporal.Now Object

• 2.2.1 Temporal.Now.timeZoneId ( )
• 2.2.2 Temporal.Now.instant ( )
• 2.2.3 Temporal.Now.plainDateTimeISO ( [ temporalTimeZoneLike ] )
• 2.2.4 Temporal.Now.zonedDateTimeISO ( [ temporalTimeZoneLike ] )
• 2.2.5 Temporal.Now.plainDateISO ( [ temporalTimeZoneLike ] )
• 2.2.6 Temporal.Now.plainTimeISO ( [ temporalTimeZoneLike ] )

2.3 Abstract Operations

• 2.3.1 HostSystemUTCEpochNanoseconds ( global )
• 2.3.2 SystemUTCEpochMilliseconds ( )
• 2.3.3 SystemUTCEpochNanoseconds ( )
• 2.3.4 SystemDateTime ( temporalTimeZoneLike )

3 Temporal.PlainDate Objects

3.1 The Temporal.PlainDate Constructor

• 3.1.1 Temporal.PlainDate ( isoYear, isoMonth, isoDay [ , calendar ] )

3.2 Properties of the Temporal.PlainDate Constructor

• 3.2.1 Temporal.PlainDate.prototype
• 3.2.2 Temporal.PlainDate.from ( item [ , options ] )
• 3.2.3 Temporal.PlainDate.compare ( one, two )

3.3 Properties of the Temporal.PlainDate Prototype Object

• 3.3.1 Temporal.PlainDate.prototype.constructor
• 3.3.2 Temporal.PlainDate.prototype[ %Symbol.toStringTag% ]
• 3.3.3 get Temporal.PlainDate.prototype.calendarId
• 3.3.4 get Temporal.PlainDate.prototype.era
• 3.3.5 get Temporal.PlainDate.prototype.eraYear
• 3.3.6 get Temporal.PlainDate.prototype.year
• 3.3.7 get Temporal.PlainDate.prototype.month
• 3.3.8 get Temporal.PlainDate.prototype.monthCode
• 3.3.9 get Temporal.PlainDate.prototype.day
• 3.3.10 get Temporal.PlainDate.prototype.dayOfWeek
• 3.3.11 get Temporal.PlainDate.prototype.dayOfYear
• 3.3.12 get Temporal.PlainDate.prototype.weekOfYear
• 3.3.13 get Temporal.PlainDate.prototype.yearOfWeek
• 3.3.14 get Temporal.PlainDate.prototype.daysInWeek
• 3.3.15 get Temporal.PlainDate.prototype.daysInMonth
• 3.3.16 get Temporal.PlainDate.prototype.daysInYear
• 3.3.17 get Temporal.PlainDate.prototype.monthsInYear
• 3.3.18 get Temporal.PlainDate.prototype.inLeapYear
• 3.3.19 Temporal.PlainDate.prototype.toPlainYearMonth ( )
• 3.3.20 Temporal.PlainDate.prototype.toPlainMonthDay ( )
• 3.3.21 Temporal.PlainDate.prototype.add ( temporalDurationLike [ , options ] )
• 3.3.22 Temporal.PlainDate.prototype.subtract ( temporalDurationLike [ , options ] )
• 3.3.23 Temporal.PlainDate.prototype.with ( temporalDateLike [ , options ] )
• 3.3.24 Temporal.PlainDate.prototype.withCalendar ( calendarLike )
• 3.3.25 Temporal.PlainDate.prototype.until ( other [ , options ] )
• 3.3.26 Temporal.PlainDate.prototype.since ( other [ , options ] )
• 3.3.27 Temporal.PlainDate.prototype.equals ( other )
• 3.3.28 Temporal.PlainDate.prototype.toPlainDateTime ( [ temporalTime ] )
• 3.3.29 Temporal.PlainDate.prototype.toZonedDateTime ( item )
• 3.3.30 Temporal.PlainDate.prototype.toString ( [ options ] )
• 3.3.31 Temporal.PlainDate.prototype.toLocaleString ( [ locales [ , options ] ] )
• 3.3.32 Temporal.PlainDate.prototype.toJSON ( )
• 3.3.33 Temporal.PlainDate.prototype.valueOf ( )

3.4 Properties of Temporal.PlainDate Instances

3.5 Abstract Operations for Temporal.PlainDate Objects

• 3.5.1 ISO Date Records
• 3.5.2 CreateISODateRecord ( year, month, day )
• 3.5.3 CreateTemporalDate ( isoDate, calendar [ , newTarget ] )
• 3.5.4 ToTemporalDate ( item [ , options ] )
• 3.5.5 ISODateSurpasses ( sign, y1, m1, d1, isoDate2 )
• 3.5.6 RegulateISODate ( year, month, day, overflow )
• 3.5.7 IsValidISODate ( year, month, day )
• 3.5.8 BalanceISODate ( year, month, day )
• 3.5.9 PadISOYear ( y )
• 3.5.10 TemporalDateToString ( temporalDate, showCalendar )
• 3.5.11 ISODateWithinLimits ( isoDate )
• 3.5.12 CompareISODate ( isoDate1, isoDate2 )
• 3.5.13 DifferenceTemporalPlainDate ( operation, temporalDate, other, options )
• 3.5.14 AddDurationToDate ( operation, temporalDate, temporalDurationLike, options )

4 Temporal.PlainTime Objects

4.1 The Temporal.PlainTime Constructor

• 4.1.1 Temporal.PlainTime ( [ hour [ , minute [ , second [ , millisecond [ , microsecond [ , nanosecond ] ] ] ] ] ] )

4.2 Properties of the Temporal.PlainTime Constructor

• 4.2.1 Temporal.PlainTime.prototype
• 4.2.2 Temporal.PlainTime.from ( item [ , options ] )
• 4.2.3 Temporal.PlainTime.compare ( one, two )

4.3 Properties of the Temporal.PlainTime Prototype Object

• 4.3.1 Temporal.PlainTime.prototype.constructor
• 4.3.2 Temporal.PlainTime.prototype[ %Symbol.toStringTag% ]
• 4.3.3 get Temporal.PlainTime.prototype.hour
• 4.3.4 get Temporal.PlainTime.prototype.minute
• 4.3.5 get Temporal.PlainTime.prototype.second
• 4.3.6 get Temporal.PlainTime.prototype.millisecond
• 4.3.7 get Temporal.PlainTime.prototype.microsecond
• 4.3.8 get Temporal.PlainTime.prototype.nanosecond
• 4.3.9 Temporal.PlainTime.prototype.add ( temporalDurationLike )
• 4.3.10 Temporal.PlainTime.prototype.subtract ( temporalDurationLike )
• 4.3.11 Temporal.PlainTime.prototype.with ( temporalTimeLike [ , options ] )
• 4.3.12 Temporal.PlainTime.prototype.until ( other [ , options ] )
• 4.3.13 Temporal.PlainTime.prototype.since ( other [ , options ] )
• 4.3.14 Temporal.PlainTime.prototype.round ( roundTo )
• 4.3.15 Temporal.PlainTime.prototype.equals ( other )
• 4.3.16 Temporal.PlainTime.prototype.toString ( [ options ] )
• 4.3.17 Temporal.PlainTime.prototype.toLocaleString ( [ locales [ , options ] ] )
• 4.3.18 Temporal.PlainTime.prototype.toJSON ( )
• 4.3.19 Temporal.PlainTime.prototype.valueOf ( )

4.4 Properties of Temporal.PlainTime Instances

4.5 Abstract Operations

• 4.5.1 Time Records
• 4.5.2 CreateTimeRecord ( hour, minute, second, millisecond, microsecond, nanosecond [ , deltaDays ] )
• 4.5.3 MidnightTimeRecord ( )
• 4.5.4 NoonTimeRecord ( )
• 4.5.5 DifferenceTime ( time1, time2 )
• 4.5.6 ToTemporalTime ( item [ , options ] )
• 4.5.7 ToTimeRecordOrMidnight ( item )
• 4.5.8 RegulateTime ( hour, minute, second, millisecond, microsecond, nanosecond, overflow )
• 4.5.9 IsValidTime ( hour, minute, second, millisecond, microsecond, nanosecond )
• 4.5.10 BalanceTime ( hour, minute, second, millisecond, microsecond, nanosecond )
• 4.5.11 CreateTemporalTime ( time [ , newTarget ] )
• 4.5.12 ToTemporalTimeRecord ( temporalTimeLike [ , completeness ] )
• 4.5.13 TimeRecordToString ( time, precision )
• 4.5.14 CompareTimeRecord ( time1, time2 )
• 4.5.15 AddTime ( time, timeDuration )
• 4.5.16 RoundTime ( time, increment, unit, roundingMode )
• 4.5.17 DifferenceTemporalPlainTime ( operation, temporalTime, other, options )
• 4.5.18 AddDurationToTime ( operation, temporalTime, temporalDurationLike )

5 Temporal.PlainDateTime Objects

5.1 The Temporal.PlainDateTime Constructor

• 5.1.1 Temporal.PlainDateTime ( isoYear, isoMonth, isoDay [ , hour [ , minute [ , second [ , millisecond [ , microsecond [ , nanosecond [ , calendar ] ] ] ] ] ] ] )

5.2 Properties of the Temporal.PlainDateTime Constructor

• 5.2.1 Temporal.PlainDateTime.prototype
• 5.2.2 Temporal.PlainDateTime.from ( item [ , options ] )
• 5.2.3 Temporal.PlainDateTime.compare ( one, two )

5.3 Properties of the Temporal.PlainDateTime Prototype Object

• 5.3.1 Temporal.PlainDateTime.prototype.constructor
• 5.3.2 Temporal.PlainDateTime.prototype[ %Symbol.toStringTag% ]
• 5.3.3 get Temporal.PlainDateTime.prototype.calendarId
• 5.3.4 get Temporal.PlainDateTime.prototype.era
• 5.3.5 get Temporal.PlainDateTime.prototype.eraYear
• 5.3.6 get Temporal.PlainDateTime.prototype.year
• 5.3.7 get Temporal.PlainDateTime.prototype.month
• 5.3.8 get Temporal.PlainDateTime.prototype.monthCode
• 5.3.9 get Temporal.PlainDateTime.prototype.day
• 5.3.10 get Temporal.PlainDateTime.prototype.hour
• 5.3.11 get Temporal.PlainDateTime.prototype.minute
• 5.3.12 get Temporal.PlainDateTime.prototype.second
• 5.3.13 get Temporal.PlainDateTime.prototype.millisecond
• 5.3.14 get Temporal.PlainDateTime.prototype.microsecond
• 5.3.15 get Temporal.PlainDateTime.prototype.nanosecond
• 5.3.16 get Temporal.PlainDateTime.prototype.dayOfWeek
• 5.3.17 get Temporal.PlainDateTime.prototype.dayOfYear
• 5.3.18 get Temporal.PlainDateTime.prototype.weekOfYear
• 5.3.19 get Temporal.PlainDateTime.prototype.yearOfWeek
• 5.3.20 get Temporal.PlainDateTime.prototype.daysInWeek
• 5.3.21 get Temporal.PlainDateTime.prototype.daysInMonth
• 5.3.22 get Temporal.PlainDateTime.prototype.daysInYear
• 5.3.23 get Temporal.PlainDateTime.prototype.monthsInYear
• 5.3.24 get Temporal.PlainDateTime.prototype.inLeapYear
• 5.3.25 Temporal.PlainDateTime.prototype.with ( temporalDateTimeLike [ , options ] )
• 5.3.26 Temporal.PlainDateTime.prototype.withPlainTime ( [ plainTimeLike ] )
• 5.3.27 Temporal.PlainDateTime.prototype.withCalendar ( calendarLike )
• 5.3.28 Temporal.PlainDateTime.prototype.add ( temporalDurationLike [ , options ] )
• 5.3.29 Temporal.PlainDateTime.prototype.subtract ( temporalDurationLike [ , options ] )
• 5.3.30 Temporal.PlainDateTime.prototype.until ( other [ , options ] )
• 5.3.31 Temporal.PlainDateTime.prototype.since ( other [ , options ] )
• 5.3.32 Temporal.PlainDateTime.prototype.round ( roundTo )
• 5.3.33 Temporal.PlainDateTime.prototype.equals ( other )
• 5.3.34 Temporal.PlainDateTime.prototype.toString ( [ options ] )
• 5.3.35 Temporal.PlainDateTime.prototype.toLocaleString ( [ locales [ , options ] ] )
• 5.3.36 Temporal.PlainDateTime.prototype.toJSON ( )
• 5.3.37 Temporal.PlainDateTime.prototype.valueOf ( )
• 5.3.38 Temporal.PlainDateTime.prototype.toZonedDateTime ( temporalTimeZoneLike [ , options ] )
• 5.3.39 Temporal.PlainDateTime.prototype.toPlainDate ( )
• 5.3.40 Temporal.PlainDateTime.prototype.toPlainTime ( )

5.4 Properties of Temporal.PlainDateTime Instances

5.5 Abstract Operations

• 5.5.1 ISO Date-Time Records
• 5.5.2 TimeValueToISODateTimeRecord ( t )
• 5.5.3 CombineISODateAndTimeRecord ( isoDate, time )
• 5.5.4 ISODateTimeWithinLimits ( isoDateTime )
• 5.5.5 InterpretTemporalDateTimeFields ( calendar, fields, overflow )
• 5.5.6 ToTemporalDateTime ( item [ , options ] )
• 5.5.7 BalanceISODateTime ( year, month, day, hour, minute, second, millisecond, microsecond, nanosecond )
• 5.5.8 CreateTemporalDateTime ( isoDateTime, calendar [ , newTarget ] )
• 5.5.9 ISODateTimeToString ( isoDateTime, calendar, precision, showCalendar )
• 5.5.10 CompareISODateTime ( isoDateTime1, isoDateTime2 )
• 5.5.11 RoundISODateTime ( isoDateTime, increment, unit, roundingMode )
• 5.5.12 DifferenceISODateTime ( isoDateTime1, isoDateTime2, calendar, largestUnit )
• 5.5.13 DifferencePlainDateTimeWithRounding ( isoDateTime1, isoDateTime2, calendar, largestUnit, roundingIncrement, smallestUnit, roundingMode )
• 5.5.14 DifferencePlainDateTimeWithTotal ( isoDateTime1, isoDateTime2, calendar, unit )
• 5.5.15 DifferenceTemporalPlainDateTime ( operation, dateTime, other, options )
• 5.5.16 AddDurationToDateTime ( operation, dateTime, temporalDurationLike, options )

6 Temporal.ZonedDateTime Objects

6.1 The Temporal.ZonedDateTime Constructor

• 6.1.1 Temporal.ZonedDateTime ( epochNanoseconds, timeZone [ , calendar ] )

6.2 Properties of the Temporal.ZonedDateTime Constructor

• 6.2.1 Temporal.ZonedDateTime.prototype
• 6.2.2 Temporal.ZonedDateTime.from ( item [ , options ] )
• 6.2.3 Temporal.ZonedDateTime.compare ( one, two )

6.3 Properties of the Temporal.ZonedDateTime Prototype Object

• 6.3.1 Temporal.ZonedDateTime.prototype.constructor
• 6.3.2 Temporal.ZonedDateTime.prototype[ %Symbol.toStringTag% ]
• 6.3.3 get Temporal.ZonedDateTime.prototype.calendarId
• 6.3.4 get Temporal.ZonedDateTime.prototype.timeZoneId
• 6.3.5 get Temporal.ZonedDateTime.prototype.era
• 6.3.6 get Temporal.ZonedDateTime.prototype.eraYear
• 6.3.7 get Temporal.ZonedDateTime.prototype.year
• 6.3.8 get Temporal.ZonedDateTime.prototype.month
• 6.3.9 get Temporal.ZonedDateTime.prototype.monthCode
• 6.3.10 get Temporal.ZonedDateTime.prototype.day
• 6.3.11 get Temporal.ZonedDateTime.prototype.hour
• 6.3.12 get Temporal.ZonedDateTime.prototype.minute
• 6.3.13 get Temporal.ZonedDateTime.prototype.second
• 6.3.14 get Temporal.ZonedDateTime.prototype.millisecond
• 6.3.15 get Temporal.ZonedDateTime.prototype.microsecond
• 6.3.16 get Temporal.ZonedDateTime.prototype.nanosecond
• 6.3.17 get Temporal.ZonedDateTime.prototype.epochMilliseconds
• 6.3.18 get Temporal.ZonedDateTime.prototype.epochNanoseconds
• 6.3.19 get Temporal.ZonedDateTime.prototype.dayOfWeek
• 6.3.20 get Temporal.ZonedDateTime.prototype.dayOfYear
• 6.3.21 get Temporal.ZonedDateTime.prototype.weekOfYear
• 6.3.22 get Temporal.ZonedDateTime.prototype.yearOfWeek
• 6.3.23 get Temporal.ZonedDateTime.prototype.hoursInDay
• 6.3.24 get Temporal.ZonedDateTime.prototype.daysInWeek
• 6.3.25 get Temporal.ZonedDateTime.prototype.daysInMonth
• 6.3.26 get Temporal.ZonedDateTime.prototype.daysInYear
• 6.3.27 get Temporal.ZonedDateTime.prototype.monthsInYear
• 6.3.28 get Temporal.ZonedDateTime.prototype.inLeapYear
• 6.3.29 get Temporal.ZonedDateTime.prototype.offsetNanoseconds
• 6.3.30 get Temporal.ZonedDateTime.prototype.offset
• 6.3.31 Temporal.ZonedDateTime.prototype.with ( temporalZonedDateTimeLike [ , options ] )
• 6.3.32 Temporal.ZonedDateTime.prototype.withPlainTime ( [ plainTimeLike ] )
• 6.3.33 Temporal.ZonedDateTime.prototype.withTimeZone ( timeZoneLike )
• 6.3.34 Temporal.ZonedDateTime.prototype.withCalendar ( calendarLike )
• 6.3.35 Temporal.ZonedDateTime.prototype.add ( temporalDurationLike [ , options ] )
• 6.3.36 Temporal.ZonedDateTime.prototype.subtract ( temporalDurationLike [ , options ] )
• 6.3.37 Temporal.ZonedDateTime.prototype.until ( other [ , options ] )
• 6.3.38 Temporal.ZonedDateTime.prototype.since ( other [ , options ] )
• 6.3.39 Temporal.ZonedDateTime.prototype.round ( roundTo )
• 6.3.40 Temporal.ZonedDateTime.prototype.equals ( other )
• 6.3.41 Temporal.ZonedDateTime.prototype.toString ( [ options ] )
• 6.3.42 Temporal.ZonedDateTime.prototype.toLocaleString ( [ locales [ , options ] ] )
• 6.3.43 Temporal.ZonedDateTime.prototype.toJSON ( )
• 6.3.44 Temporal.ZonedDateTime.prototype.valueOf ( )
• 6.3.45 Temporal.ZonedDateTime.prototype.startOfDay ( )
• 6.3.46 Temporal.ZonedDateTime.prototype.getTimeZoneTransition ( directionParam )
• 6.3.47 Temporal.ZonedDateTime.prototype.toInstant ( )
• 6.3.48 Temporal.ZonedDateTime.prototype.toPlainDate ( )
• 6.3.49 Temporal.ZonedDateTime.prototype.toPlainTime ( )
• 6.3.50 Temporal.ZonedDateTime.prototype.toPlainDateTime ( )

6.4 Properties of Temporal.ZonedDateTime Instances

6.5 Abstract Operations

• 6.5.1 InterpretISODateTimeOffset ( isoDate, time, offsetBehaviour, offsetNanoseconds, timeZone, disambiguation, offsetOption, matchBehaviour )
• 6.5.2 ToTemporalZonedDateTime ( item [ , options ] )
• 6.5.3 CreateTemporalZonedDateTime ( epochNanoseconds, timeZone, calendar [ , newTarget ] )
• 6.5.4 TemporalZonedDateTimeToString ( zonedDateTime, precision, showCalendar, showTimeZone, showOffset [ , increment [ , unit [ , roundingMode ] ] ] )
• 6.5.5 AddZonedDateTime ( epochNanoseconds, timeZone, calendar, duration, overflow )
• 6.5.6 DifferenceZonedDateTime ( ns1, ns2, timeZone, calendar, largestUnit )
• 6.5.7 DifferenceZonedDateTimeWithRounding ( ns1, ns2, timeZone, calendar, largestUnit, roundingIncrement, smallestUnit, roundingMode )
• 6.5.8 DifferenceZonedDateTimeWithTotal ( ns1, ns2, timeZone, calendar, unit )
• 6.5.9 DifferenceTemporalZonedDateTime ( operation, zonedDateTime, other, options )
• 6.5.10 AddDurationToZonedDateTime ( operation, zonedDateTime, temporalDurationLike, options )

7 Temporal.Duration Objects

7.1 The Temporal.Duration Constructor

• 7.1.1 Temporal.Duration ( [ years [ , months [ , weeks [ , days [ , hours [ , minutes [ , seconds [ , milliseconds [ , microseconds [ , nanoseconds ] ] ] ] ] ] ] ] ] ] )

7.2 Properties of the Temporal.Duration Constructor

• 7.2.1 Temporal.Duration.prototype
• 7.2.2 Temporal.Duration.from ( item )
• 7.2.3 Temporal.Duration.compare ( one, two [ , options ] )

7.3 Properties of the Temporal.Duration Prototype Object

• 7.3.1 Temporal.Duration.prototype.constructor
• 7.3.2 Temporal.Duration.prototype[ %Symbol.toStringTag% ]
• 7.3.3 get Temporal.Duration.prototype.years
• 7.3.4 get Temporal.Duration.prototype.months
• 7.3.5 get Temporal.Duration.prototype.weeks
• 7.3.6 get Temporal.Duration.prototype.days
• 7.3.7 get Temporal.Duration.prototype.hours
• 7.3.8 get Temporal.Duration.prototype.minutes
• 7.3.9 get Temporal.Duration.prototype.seconds
• 7.3.10 get Temporal.Duration.prototype.milliseconds
• 7.3.11 get Temporal.Duration.prototype.microseconds
• 7.3.12 get Temporal.Duration.prototype.nanoseconds
• 7.3.13 get Temporal.Duration.prototype.sign
• 7.3.14 get Temporal.Duration.prototype.blank
• 7.3.15 Temporal.Duration.prototype.with ( temporalDurationLike )
• 7.3.16 Temporal.Duration.prototype.negated ( )
• 7.3.17 Temporal.Duration.prototype.abs ( )
• 7.3.18 Temporal.Duration.prototype.add ( other )
• 7.3.19 Temporal.Duration.prototype.subtract ( other )
• 7.3.20 Temporal.Duration.prototype.round ( roundTo )
• 7.3.21 Temporal.Duration.prototype.total ( totalOf )
• 7.3.22 Temporal.Duration.prototype.toString ( [ options ] )
• 7.3.23 Temporal.Duration.prototype.toJSON ( )
• 7.3.24 Temporal.Duration.prototype.toLocaleString ( [ locales [ , options ] ] )
• 7.3.25 Temporal.Duration.prototype.valueOf ( )

7.4 Properties of Temporal.Duration Instances

7.5 Abstract Operations

• 7.5.1 Date Duration Records
• 7.5.2 Partial Duration Records
• 7.5.3 Internal Duration Records
• 7.5.4 ZeroDateDuration ( )
• 7.5.5 ToInternalDurationRecord ( duration )
• 7.5.6 ToInternalDurationRecordWith24HourDays ( duration )
• 7.5.7 ToDateDurationRecordWithoutTime ( duration )
• 7.5.8 TemporalDurationFromInternal ( internalDuration, largestUnit )
• 7.5.9 CreateDateDurationRecord ( years, months, weeks, days )
• 7.5.10 AdjustDateDurationRecord ( dateDuration, days [ , weeks [ , months ] ] )
• 7.5.11 CombineDateAndTimeDuration ( dateDuration, timeDuration )
• 7.5.12 ToTemporalDuration ( item )
• 7.5.13 DurationSign ( duration )
• 7.5.14 DateDurationSign ( dateDuration )
• 7.5.15 InternalDurationSign ( internalDuration )
• 7.5.16 IsValidDuration ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds )
• 7.5.17 DefaultTemporalLargestUnit ( duration )
• 7.5.18 ToTemporalPartialDurationRecord ( temporalDurationLike )
• 7.5.19 CreateTemporalDuration ( years, months, weeks, days, hours, minutes, seconds, milliseconds, microseconds, nanoseconds [ , newTarget ] )
• 7.5.20 CreateNegatedTemporalDuration ( duration )
• 7.5.21 TimeDurationFromComponents ( hours, minutes, seconds, milliseconds, microseconds, nanoseconds )
• 7.5.22 AddTimeDuration ( one, two )
• 7.5.23 Add24HourDaysToTimeDuration ( d, days )
• 7.5.24 AddTimeDurationToEpochNanoseconds ( d, epochNs )
• 7.5.25 CompareTimeDuration ( one, two )
• 7.5.26 TimeDurationFromEpochNanosecondsDifference ( one, two )
• 7.5.27 RoundTimeDurationToIncrement ( d, increment, roundingMode )
• 7.5.28 TimeDurationSign ( d )
• 7.5.29 DateDurationDays ( dateDuration, plainRelativeTo )
• 7.5.30 RoundTimeDuration ( timeDuration, increment, unit, roundingMode )
• 7.5.31 TotalTimeDuration ( timeDuration, unit )
• 7.5.32 Duration Nudge Result Records
• 7.5.33 NudgeToCalendarUnit ( sign, duration, destEpochNs, isoDateTime, timeZone, calendar, increment, unit, roundingMode )
• 7.5.34 NudgeToZonedTime ( sign, duration, isoDateTime, timeZone, calendar, increment, unit, roundingMode )
• 7.5.35 NudgeToDayOrTime ( duration, destEpochNs, largestUnit, increment, smallestUnit, roundingMode )
• 7.5.36 BubbleRelativeDuration ( sign, duration, nudgedEpochNs, isoDateTime, timeZone, calendar, largestUnit, smallestUnit )
• 7.5.37 RoundRelativeDuration ( duration, destEpochNs, isoDateTime, timeZone, calendar, largestUnit, increment, smallestUnit, roundingMode )
• 7.5.38 TotalRelativeDuration ( duration, destEpochNs, isoDateTime, timeZone, calendar, unit )
• 7.5.39 TemporalDurationToString ( duration, precision )
• 7.5.40 AddDurations ( operation, duration, other )

8 Temporal.Instant Objects

8.1 The Temporal.Instant Constructor

• 8.1.1 Temporal.Instant ( epochNanoseconds )

8.2 Properties of the Temporal.Instant Constructor

• 8.2.1 Temporal.Instant.prototype
• 8.2.2 Temporal.Instant.from ( item )
• 8.2.3 Temporal.Instant.fromEpochMilliseconds ( epochMilliseconds )
• 8.2.4 Temporal.Instant.fromEpochNanoseconds ( epochNanoseconds )
• 8.2.5 Temporal.Instant.compare ( one, two )

8.3 Properties of the Temporal.Instant Prototype Object

• 8.3.1 Temporal.Instant.prototype.constructor
• 8.3.2 Temporal.Instant.prototype[ %Symbol.toStringTag% ]
• 8.3.3 get Temporal.Instant.prototype.epochMilliseconds
• 8.3.4 get Temporal.Instant.prototype.epochNanoseconds
• 8.3.5 Temporal.Instant.prototype.add ( temporalDurationLike )
• 8.3.6 Temporal.Instant.prototype.subtract ( temporalDurationLike )
• 8.3.7 Temporal.Instant.prototype.until ( other [ , options ] )
• 8.3.8 Temporal.Instant.prototype.since ( other [ , options ] )
• 8.3.9 Temporal.Instant.prototype.round ( roundTo )
• 8.3.10 Temporal.Instant.prototype.equals ( other )
• 8.3.11 Temporal.Instant.prototype.toString ( [ options ] )
• 8.3.12 Temporal.Instant.prototype.toLocaleString ( [ locales [ , options ] ] )
• 8.3.13 Temporal.Instant.prototype.toJSON ( )
• 8.3.14 Temporal.Instant.prototype.valueOf ( )
• 8.3.15 Temporal.Instant.prototype.toZonedDateTimeISO ( timeZone )

8.4 Properties of Temporal.Instant Instances

• 8.4.1 Temporal.Instant range

8.5 Abstract Operations

• 8.5.1 IsValidEpochNanoseconds ( epochNanoseconds )
• 8.5.2 CreateTemporalInstant ( epochNanoseconds [ , newTarget ] )
• 8.5.3 ToTemporalInstant ( item )
• 8.5.4 CompareEpochNanoseconds ( epochNanosecondsOne, epochNanosecondsTwo )
• 8.5.5 AddInstant ( epochNanoseconds, timeDuration )
• 8.5.6 DifferenceInstant ( ns1, ns2, roundingIncrement, smallestUnit, roundingMode )
• 8.5.7 RoundTemporalInstant ( ns, increment, unit, roundingMode )
• 8.5.8 TemporalInstantToString ( instant, timeZone, precision )
• 8.5.9 DifferenceTemporalInstant ( operation, instant, other, options )
• 8.5.10 AddDurationToInstant ( operation, instant, temporalDurationLike )

9 Temporal.PlainYearMonth Objects

9.1 The Temporal.PlainYearMonth Constructor

• 9.1.1 Temporal.PlainYearMonth ( isoYear, isoMonth [ , calendar [ , referenceISODay ] ] )

9.2 Properties of the Temporal.PlainYearMonth Constructor

• 9.2.1 Temporal.PlainYearMonth.prototype
• 9.2.2 Temporal.PlainYearMonth.from ( item [ , options ] )
• 9.2.3 Temporal.PlainYearMonth.compare ( one, two )

9.3 Properties of the Temporal.PlainYearMonth Prototype Object

• 9.3.1 Temporal.PlainYearMonth.prototype.constructor
• 9.3.2 Temporal.PlainYearMonth.prototype[ %Symbol.toStringTag% ]
• 9.3.3 get Temporal.PlainYearMonth.prototype.calendarId
• 9.3.4 get Temporal.PlainYearMonth.prototype.era
• 9.3.5 get Temporal.PlainYearMonth.prototype.eraYear
• 9.3.6 get Temporal.PlainYearMonth.prototype.year
• 9.3.7 get Temporal.PlainYearMonth.prototype.month
• 9.3.8 get Temporal.PlainYearMonth.prototype.monthCode
• 9.3.9 get Temporal.PlainYearMonth.prototype.daysInYear
• 9.3.10 get Temporal.PlainYearMonth.prototype.daysInMonth
• 9.3.11 get Temporal.PlainYearMonth.prototype.monthsInYear
• 9.3.12 get Temporal.PlainYearMonth.prototype.inLeapYear
• 9.3.13 Temporal.PlainYearMonth.prototype.with ( temporalYearMonthLike [ , options ] )
• 9.3.14 Temporal.PlainYearMonth.prototype.add ( temporalDurationLike [ , options ] )
• 9.3.15 Temporal.PlainYearMonth.prototype.subtract ( temporalDurationLike [ , options ] )
• 9.3.16 Temporal.PlainYearMonth.prototype.until ( other [ , options ] )
• 9.3.17 Temporal.PlainYearMonth.prototype.since ( other [ , options ] )
• 9.3.18 Temporal.PlainYearMonth.prototype.equals ( other )
• 9.3.19 Temporal.PlainYearMonth.prototype.toString ( [ options ] )
• 9.3.20 Temporal.PlainYearMonth.prototype.toLocaleString ( [ locales [ , options ] ] )
• 9.3.21 Temporal.PlainYearMonth.prototype.toJSON ( )
• 9.3.22 Temporal.PlainYearMonth.prototype.valueOf ( )
• 9.3.23 Temporal.PlainYearMonth.prototype.toPlainDate ( item )

9.4 Properties of Temporal.PlainYearMonth Instances

9.5 Abstract Operations

• 9.5.1 ISO Year-Month Records
• 9.5.2 ToTemporalYearMonth ( item [ , options ] )
• 9.5.3 ISOYearMonthWithinLimits ( isoDate )
• 9.5.4 BalanceISOYearMonth ( year, month )
• 9.5.5 CreateTemporalYearMonth ( isoDate, calendar [ , newTarget ] )
• 9.5.6 TemporalYearMonthToString ( yearMonth, showCalendar )
• 9.5.7 DifferenceTemporalPlainYearMonth ( operation, yearMonth, other, options )
• 9.5.8 AddDurationToYearMonth ( operation, yearMonth, temporalDurationLike, options )

10 Temporal.PlainMonthDay Objects

10.1 The Temporal.PlainMonthDay Constructor

• 10.1.1 Temporal.PlainMonthDay ( isoMonth, isoDay [ , calendar [ , referenceISOYear ] ] )

10.2 Properties of the Temporal.PlainMonthDay Constructor

• 10.2.1 Temporal.PlainMonthDay.prototype
• 10.2.2 Temporal.PlainMonthDay.from ( item [ , options ] )

10.3 Properties of the Temporal.PlainMonthDay Prototype Object

• 10.3.1 Temporal.PlainMonthDay.prototype.constructor
• 10.3.2 Temporal.PlainMonthDay.prototype[ %Symbol.toStringTag% ]
• 10.3.3 get Temporal.PlainMonthDay.prototype.calendarId
• 10.3.4 get Temporal.PlainMonthDay.prototype.monthCode
• 10.3.5 get Temporal.PlainMonthDay.prototype.day
• 10.3.6 Temporal.PlainMonthDay.prototype.with ( temporalMonthDayLike [ , options ] )
• 10.3.7 Temporal.PlainMonthDay.prototype.equals ( other )
• 10.3.8 Temporal.PlainMonthDay.prototype.toString ( [ options ] )
• 10.3.9 Temporal.PlainMonthDay.prototype.toLocaleString ( [ locales [ , options ] ] )
• 10.3.10 Temporal.PlainMonthDay.prototype.toJSON ( )
• 10.3.11 Temporal.PlainMonthDay.prototype.valueOf ( )
• 10.3.12 Temporal.PlainMonthDay.prototype.toPlainDate ( item )

10.4 Properties of Temporal.PlainMonthDay Instances

10.5 Abstract Operations

• 10.5.1 ToTemporalMonthDay ( item [ , options ] )
• 10.5.2 CreateTemporalMonthDay ( isoDate, calendar [ , newTarget ] )
• 10.5.3 TemporalMonthDayToString ( monthDay, showCalendar )

11 Time Zones

11.1 Abstract Operations

• 11.1.1 GetAvailableNamedTimeZoneIdentifier ( timeZoneIdentifier )
• 11.1.2 GetISOPartsFromEpoch ( epochNanoseconds )
• 11.1.3 GetNamedTimeZoneNextTransition ( timeZoneIdentifier, epochNanoseconds )
• 11.1.4 GetNamedTimeZonePreviousTransition ( timeZoneIdentifier, epochNanoseconds )
• 11.1.5 FormatOffsetTimeZoneIdentifier ( offsetMinutes [ , style ] )
• 11.1.6 FormatUTCOffsetNanoseconds ( offsetNanoseconds )
• 11.1.7 FormatDateTimeUTCOffsetRounded ( offsetNanoseconds )
• 11.1.8 ToTemporalTimeZoneIdentifier ( temporalTimeZoneLike )
• 11.1.9 GetOffsetNanosecondsFor ( timeZone, epochNs )
• 11.1.10 GetISODateTimeFor ( timeZone, epochNs )
• 11.1.11 GetEpochNanosecondsFor ( timeZone, isoDateTime, disambiguation )
• 11.1.12 DisambiguatePossibleEpochNanoseconds ( possibleEpochNs, timeZone, isoDateTime, disambiguation )
• 11.1.13 GetPossibleEpochNanoseconds ( timeZone, isoDateTime )
• 11.1.14 GetStartOfDay ( timeZone, isoDate )
• 11.1.15 TimeZoneEquals ( one, two )
• 11.1.16 ParseTimeZoneIdentifier ( identifier )

12 Calendars

12.1 Calendar Types

• 12.1.1 CanonicalizeCalendar ( id )
• 12.1.2 AvailableCalendars ( )

12.2 Abstract Operations

• 12.2.1 Calendar Date Records
• 12.2.2 Calendar Fields Records
• 12.2.3 PrepareCalendarFields ( calendar, fields, calendarFieldNames, nonCalendarFieldNames, requiredFieldNames )
• 12.2.4 CalendarFieldKeysPresent ( fields )
• 12.2.5 CalendarMergeFields ( calendar, fields, additionalFields )
• 12.2.6 CalendarDateAdd ( calendar, isoDate, duration, overflow )
• 12.2.7 CalendarDateUntil ( calendar, one, two, largestUnit )
• 12.2.8 ToTemporalCalendarIdentifier ( temporalCalendarLike )
• 12.2.9 GetTemporalCalendarIdentifierWithISODefault ( item )
• 12.2.10 CalendarDateFromFields ( calendar, fields, overflow )
• 12.2.11 CalendarYearMonthFromFields ( calendar, fields, overflow )
• 12.2.12 CalendarMonthDayFromFields ( calendar, fields, overflow )
• 12.2.13 FormatCalendarAnnotation ( id, showCalendar )
• 12.2.14 CalendarEquals ( one, two )
• 12.2.15 ISODaysInMonth ( year, month )
• 12.2.16 ISOWeekOfYear ( isoDate )
• 12.2.17 ISODayOfYear ( isoDate )
• 12.2.18 ISODayOfWeek ( isoDate )
• 12.2.19 CalendarDateToISO ( calendar, fields, overflow )
• 12.2.20 CalendarMonthDayToISOReferenceDate ( calendar, fields, overflow )
• 12.2.21 CalendarISOToDate ( calendar, isoDate )
• 12.2.22 CalendarExtraFields ( calendar, fields )
• 12.2.23 CalendarFieldKeysToIgnore ( calendar, keys )
• 12.2.24 CalendarResolveFields ( calendar, fields, type )

13 Abstract Operations

• 13.1 ISODateToEpochDays ( year, month, date )
• 13.2 EpochDaysToEpochMs ( day, time )
• 13.3 Date Equations
• 13.4 CheckISODaysRange ( isoDate )
• 13.5 Units
• 13.6 GetTemporalOverflowOption ( options )
• 13.7 GetTemporalDisambiguationOption ( options )
• 13.8 NegateRoundingMode ( roundingMode )
• 13.9 GetTemporalOffsetOption ( options, fallback )
• 13.10 GetTemporalShowCalendarNameOption ( options )
• 13.11 GetTemporalShowTimeZoneNameOption ( options )
• 13.12 GetTemporalShowOffsetOption ( options )
• 13.13 GetDirectionOption ( options )
• 13.14 ValidateTemporalRoundingIncrement ( increment, dividend, inclusive )
• 13.15 GetTemporalFractionalSecondDigitsOption ( options )
• 13.16 ToSecondsStringPrecisionRecord ( smallestUnit, fractionalDigitCount )
• 13.17 GetTemporalUnitValuedOption ( options, key, unitGroup, default [ , extraValues ] )
• 13.18 GetTemporalRelativeToOption ( options )
• 13.19 LargerOfTwoTemporalUnits ( u1, u2 )
• 13.20 IsCalendarUnit ( unit )
• 13.21 TemporalUnitCategory ( unit )
• 13.22 MaximumTemporalDurationRoundingIncrement ( unit )
• 13.23 IsPartialTemporalObject ( value )
• 13.24 FormatFractionalSeconds ( subSecondNanoseconds, precision )
• 13.25 FormatTimeString ( hour, minute, second, subSecondNanoseconds, precision [ , style ] )
• 13.26 GetUnsignedRoundingMode ( roundingMode, si`gn )
• 13.27 ApplyUnsignedRoundingMode ( x, r1, r2, unsignedRoundingMode )
• 13.28 RoundNumberToIncrement ( x, increment, roundingMode )
• 13.29 RoundNumberToIncrementAsIfPositive ( x, increment, roundingMode )
• 13.30 ISO 8601 grammar`
  • 13.30.1 Static Semantics: IsValidMonthDay
  • 13.30.2 Static Semantics: IsValidDate
  • 13.30.3 Static Semantics: Early Errors
• 13.31 ISO String Time Zone Parse Records
• 13.32 ISO Date-Time Parse Records
• 13.33 ParseISODateTime ( isoString, allowedFormats )
• 13.34 ParseTemporalCalendarString ( string )
• 13.35 ParseTemporalDurationString ( isoString )
• 13.36 ParseTemporalTimeZoneString ( timeZoneString )
• 13.37 ToPositiveIntegerWithTruncation ( argument )
• 13.38 ToIntegerWithTruncation ( argument )
• 13.39 ToIntegerIfIntegral ( argument )
• 13.40 ToMonthCode ( argument )
• 13.41 ToOffsetString ( argument )
• 13.42 ISODateToFields ( calendar, isoDate, type )
• 13.43 GetDifferenceSettings ( operation, options, unitGroup, disallowedUnits, fallbackSmallestUnit, smallestLargestDefaultUnit )

14 Amendments to the ECMAScript® 2023 Language Specification

14.1 The String Type

14.2 The Year-Week Record Specification Type

14.3 Mathematical Operations

14.4 Abstract Operations

14.4.1 Operations for Reading Options

• 14.4.1.1 GetOptionsObject ( options )
• 14.4.1.2 GetOption ( options, property, type, values, default )
• 14.4.1.3 GetRoundingModeOption ( options, fallback )
• 14.4.1.4 GetRoundingIncrementOption ( options )

14.5 Overview of Date Objects and Definitions of Abstract Operations

• 14.5.1 GetUTCEpochNanoseconds ( isoDateTime )
• 14.5.2 Time Zone Identifiers
• 14.5.3 GetNamedTimeZoneEpochNanoseconds ( timeZoneIdentifier, isoDateTime )
• 14.5.4 SystemTimeZoneIdentifier ( )
• 14.5.5 Time Zone Offset String Formats
• 14.5.6 LocalTime ( t )
• 14.5.7 UTC ( t )
• 14.5.8 TimeString ( tv )
• 14.5.9 TimeZoneString ( tv )

14.6 The Date Constructor

• 14.6.1 Date ( ...values )

14.7 Properties of the Date Constructor

• 14.7.1 Date.now ( )

14.8 Properties of the Date Prototype Object

• 14.8.1 Date.prototype.toTemporalInstant ( )

15 Amendments to the ECMAScript® 2023 Internationalization API Specification

15.1 Case Sensitivity and Case Mapping

• 15.2 Use of the IANA Time Zone Database
• 15.2.1 AvailableNamedTimeZoneIdentifiers ( )
• 15.3 Time Zone Names
• 15.3.1 IsValidTimeZoneName ( timeZone )
• 15.3.2 CanonicalizeTimeZoneName ( timeZone )
• 15.3.3 AvailableCanonicalTimeZones ( )
• 15.4 Calendar Types
• 15.4.1 AvailableCalendars ( )

15.5 The Intl Object

• 15.5.1 Function Properties of the Intl Object
• 15.5.1.1 Intl.supportedValuesOf ( key )

15.6 Abstract Operations

• 15.6.1 GetOptionsObject ( options )
• 15.6.2 GetOption ( options, property, type, values, default )
• 15.6.3 GetUnsignedRoundingMode ( roundingMode, sign )
• 15.6.4 ApplyUnsignedRoundingMode ( x, r1, r2, unsignedRoundingMode )

15.7 The Intl.DateTimeFormat Constructor

• 15.7.1 CreateDateTimeFormat ( newTarget, locales, options, required, defaults [ , toLocaleStringTimeZone ] )

15.8 Properties of the Intl.DateTimeFormat Constructor

• 15.8.1 Internal slots

15.9 Abstract Operations for DateTimeFormat Objects

• 15.9.1 GetDateTimeFormat ( formats, matcher, options, required, defaults, inherit )
• 15.9.2 AdjustDateTimeStyleFormat ( formats, baseFormat, matcher, allowedOptions )
• 15.9.3 DateTime Format Functions
• 15.9.4 FormatDateTimePattern ( dateTimeFormat, format, pattern, , epochNanoseconds )
• 15.9.5 PartitionDateTimePattern ( dateTimeFormat, x )
• 15.9.6 FormatDateTime ( dateTimeFormat, x )
• 15.9.7 FormatDateTimeToParts ( dateTimeFormat, x )
• 15.9.8 PartitionDateTimeRangePattern ( dateTimeFormat, x, y )
• 15.9.9 FormatDateTimeRange ( dateTimeFormat, x, y )
• 15.9.10 FormatDateTimeRangeToParts ( dateTimeFormat, x, y )
• 15.9.11 ToDateTimeFormattable ( value )
• 15.9.12 IsTemporalObject ( value )
• 15.9.13 SameTemporalType ( x, y )
• 15.9.14 Value Format Records
• 15.9.15 HandleDateTimeTemporalDate ( dateTimeFormat, temporalDate )
• 15.9.16 HandleDateTimeTemporalYearMonth ( dateTimeFormat, temporalYearMonth )
• 15.9.17 HandleDateTimeTemporalMonthDay ( dateTimeFormat, temporalMonthDay )
• 15.9.18 HandleDateTimeTemporalTime ( dateTimeFormat, temporalTime )
• 15.9.19 HandleDateTimeTemporalDateTime ( dateTimeFormat, dateTime )
• 15.9.20 HandleDateTimeTemporalInstant ( dateTimeFormat, instant )
• 15.9.21 HandleDateTimeOthers ( dateTimeFormat, x )
• 15.9.22 HandleDateTimeValue ( dateTimeFormat, x )
• 15.9.23 ToLocalTime ( epochNs, calendar, timeZoneIdentifier )

15.10 Properties of the Intl.DateTimeFormat Prototype Object

• 15.10.1 Intl.DateTimeFormat.prototype.formatToParts ( date )
• 15.10.2 Intl.DateTimeFormat.prototype.formatRange ( startDate, endDate )
• 15.10.3 Intl.DateTimeFormat.prototype.formatRangeToParts ( startDate, endDate )
• 15.10.4 Intl.DateTimeFormat.prototype.resolvedOptions ( )

15.11 Properties of Intl.DateTimeFormat Instances

15.12 Locale Sensitive Functions of the ECMAScript Language Specification

• 15.12.1 Properties of the Temporal.Duration Prototype Object
• 15.12.1.1 Temporal.Duration.prototype.toLocaleString ( [ locales [ , options ] ] )
• 15.12.2 Properties of the Temporal.Instant Prototype Object
• 15.12.2.1 Temporal.Instant.prototype.toLocaleString ( [ locales [ , options ] ] )
• 15.12.3 Properties of the Temporal.PlainDate Prototype Object
• 15.12.3.1 Temporal.PlainDate.prototype.toLocaleString ( [ locales [ , options ] ] )
• 15.12.4 Properties of the Temporal.PlainDateTime Prototype Object
• 15.12.4.1 Temporal.PlainDateTime.prototype.toLocaleString ( [ locales [ , options ] ] )
• 15.12.5 Properties of the Temporal.PlainMonthDay Prototype Object
• 15.12.5.1 Temporal.PlainMonthDay.prototype.toLocaleString ( [ locales [ , options ] ] )
• 15.12.6 Properties of the Temporal.PlainTime Prototype Object
• 15.12.6.1 Temporal.PlainTime.prototype.toLocaleString ( [ locales [ , options ] ] )
• 15.12.7 Properties of the Temporal.PlainYearMonth Prototype Object
• 15.12.7.1 Temporal.PlainYearMonth.prototype.toLocaleString ( [ locales [ , options ] ] )
• 15.12.8 Properties of the Temporal.ZonedDateTime Prototype Object
• 15.12.8.1 Temporal.ZonedDateTime.prototype.toLocaleString ( [ locales [ , options ] ] )