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addZoned: Add a temporal amount to a zoned ISO 8601 datetime string and return a zoned ISO 8601 string.addZonedBusinessDays: Return a zoned ISO 8601 datetime string with amount business days added to value.clampZoned: Restrict value to the range [min, max] in zoned datetime space.closestZonedTo: Return the candidate zoned datetime nearest to target by temporal distance.cycleZoned: Return a ZonedDateTime ISO string with field cycled by amount, wrapping at that field’s own min/max instead of carrying into the next larger field.diffZoned: Return the difference between two zoned datetimes measured in the given date-time unit.diffZonedAsDuration: Return the difference between two zoned datetimes as an ISO 8601 duration string, bridging to the duration namespace (see parseDuration, normalizeDuration).endOfQuarterForZoned: Return the end of the quarter for a given zoned ISO datetime.endOfZoned: Return the end of the specified date-time unit for a given zoned ISO 8601 datetime string.getHoursInZonedDay: Return the number of hours in the calendar day a zoned datetime falls on.getLocaleZonedDayOfWeek: Return the locale-relative day-of-week index for a zoned value.getLocaleZonedEndOfWeek: Return the end of the week containing value, using locale’s first day of week (e.g. en-US: week ends Saturday, fr-FR: week ends Sunday).getLocaleZonedStartOfWeek: Return the start of the week containing value, using locale’s first day of week (e.g. en-US: Sunday, fr-FR: Monday).getQuarterForZoned: Return the quarter of the year (1-4) for a given zoned ISO datetime.maxZoned: Return the latest (maximum) of the given ZonedDateTime values.minZoned: Return the earliest (minimum) of the given ZonedDateTime values.roundZoned: Round an ISO 8601 zoned datetime string to the specified unit.setZoned: Return a zoned ISO 8601 datetime string with the given fields set on value.sortZoned: Sort an array of ZonedDateTime values in ascending or descending order.startOfQuarterForZoned: Return the start of the quarter for a given zoned ISO datetime.startOfZoned: Return the start of the specified date-time unit for a given zoned ISO 8601 datetime string.subtractZoned: Subtract a temporal amount from a zoned ISO 8601 datetime string and return a zoned ISO 8601 string.subtractZonedBusinessDays: Return a zoned ISO 8601 datetime string with amount business days subtracted from value.
chopZonedDate: Extracts the local time portion from an ISO 8601 zoned datetime string.chopZonedDateTime: Extracts the IANA timeZone identifier from an ISO 8601 zoned datetime string.chopZonedMilliseconds: Returns the zoned datetime string rounded/truncated to second precision.chopZonedSeconds: Returns the zoned datetime string truncated to minute precision.chopZonedTime: Extracts the local date portion from an ISO 8601 zoned datetime string.chopZonedTimezone: Returns the local plain datetime (date + time) extracted from a zoned datetime string.
areZonedEqual: Compare two zoned datetime strings for exact local-field equality.areZonedEqualBy: Compare two zoned ISO datetime strings for equality at a given unit.isAfterZoned: Return whether value1 represents an instant strictly after value2.isBeforeZoned: Return whether value1 represents an instant strictly before value2.isBetweenZoned: Return true when zoned is between start and end (inclusive by default).isInDaylightSaving: Check whether a zoned value’s instant falls within daylight saving time.isZonedBusinessDay: Return true when value falls on a Monday–Friday ISO business day in the given timezone.isZonedFuture: Return true when value represents an instant strictly after now.isZonedPast: Return true when value represents an instant strictly before now.isZonedRelativeDay: Return true when value’s local calendar day falls offsetDays days from today in value’s own IANA timeZone.isZonedThisUnit: Return true when value’s local calendar day falls in the same unit as today, both resolved in value’s own IANA timeZone.isZonedWeekend: Return true when value’s local calendar day falls on a weekend for locale.
convertPlainDateTimeToZoned: Attach the specified timeZone to a plain datetime string and return a zoned ISO 8601 datetime string.convertZonedToCalendar: Express a zoned datetime in a calendar system: the RFC 9557 string Temporal.ZonedDateTime#toString() writes for that instant, zone and calendar.convertZonedToPlainDateTime: Convert a zoned ISO 8601 datetime string to a plain datetime string.convertZonedToUnix: Convert an ISO 8601 zoned datetime string to a unix epoch value in milliseconds (default) or seconds.convertZonedToUtc: Convert an ISO 8601 zoned datetime string to a UTC Instant string (ISO).convertZonedToZoned: Convert a zoned ISO 8601 datetime string to the same instant in a different timeZone.
formatCalendarZoned: Format a zoned date-time as a relative day label plus time-of-day, e.g. “Tomorrow at 2:30 PM” — the zoned counterpart of formatCalendar.formatRelativeZoned: Format the relative time between a zoned date-time and a reference instant.formatRfc2822: Format a zoned ISO 8601 datetime string as an RFC 5322 (RFC 2822) date-time — the fixed grammar email Date: headers require.formatRfc3339: Format a zoned ISO 8601 datetime string as strict RFC 3339 — the ISO 8601 profile RFC 3339 §5.6 defines, permitting only an explicit numeric offset or Z, never a bracketed IANA zone name.formatTimeZoneName: Return the localized display name for an IANA timeZone.formatZonedDateTime: Format a zoned ISO 8601 datetime string using the Intl.DateTimeFormat implementation.formatZonedRange: Format a zoned datetime range using the Temporal Intl.DateTimeFormat formatRange API.formatZonedToParts: Return the locale-formatted parts of a ZonedDateTime.
getDstTransitions: List every DST transition instant for a time zone (an IANA name or a UTC offset) within a given year.getSystemTimeZone: Return the runtime system timeZone name (for example “America/New_York”).getTimeZoneOffset: Return a time zone’s UTC offset at a given instant.getTimeZones: Return the array of all available IANA timezone identifiers.getZonedDay: Return the current day of month for the specified IANA timeZone.getZonedDayOfWeek: Return the current day of week for the specified IANA timeZone.getZonedHour: Return the current hour for the specified IANA timeZone.getZonedMicrosecond: Return the current microsecond for the specified IANA timeZone.getZonedMillisecond: Return the current millisecond for the specified IANA timeZone.getZonedMinute: Return the current minute for the specified IANA timeZone.getZonedMonth: Return the current month for the specified IANA timeZone.getZonedNanosecond: Return the current nanosecond for the specified IANA timeZone.getZonedNow: Return the current zoned datetime for the specified IANA timeZone.getZonedNowUnit: Return the requested current unit value for the specified IANA timeZone.getZonedSecond: Return the current second for the specified IANA timeZone.getZonedToday: Return today’s date in the given IANA timeZone as an ISO date string.getZonedWeekOfYear: Return the current week of year for the specified IANA timeZone.getZonedYear: Return the current year for the specified IANA timeZone.
intervalAbutsZoned: Return true when two half-open zoned intervals [start, end) are exactly adjacent — one ends at the instant the other starts, so they share no instant and leave no gap (Allen’s “meets”, either order).intervalContainsZoned: Return true when pointOrStart falls within the half-open interval [intervalStart, intervalEnd) (3-arg), or when the inner interval [innerStart, innerEnd) lies within the outer interval [intervalStart, intervalEnd) (4-arg).intervalCountZoned: Count how many unit boundaries a zoned interval crosses.intervalDifferenceZoned: Return the portion(s) of the half-open interval A [aStart, aEnd) not covered by the half-open interval B [bStart, bEnd).intervalDivideEquallyZoned: Split a zoned interval into n equal-length sub-intervals.intervalEngulfsZoned: Return true when the half-open interval B [bStart, bEnd) lies within the half-open interval A [aStart, aEnd) — every instant of B falls within A.intervalFromDurationZoned: Construct a zoned interval from a single point plus an ISO 8601 duration, anchored at either end.intervalIntersectionZoned: Return the overlapping span of two half-open zoned intervals [start, end), or null when they do not overlap.intervalLengthZoned: Return the exact length of a zoned interval in unit, as a real (possibly fractional) number.intervalOverlappingDaysZoned: Return how many distinct calendar dates two zoned intervals share, counted in the first interval’s zone.intervalsOverlapZoned: Return true when the half-open intervals [aStart, aEnd) and [bStart, bEnd) share at least one instant.intervalSplitAtZoned: Split a zoned interval at arbitrary points, producing consecutive sub-intervals.intervalUnionZoned: Return the combined span of two half-open zoned intervals [start, end), or null when their union is not one non-empty span.intervalXorAllZoned: Return the symmetric difference across a list of zoned intervals — the set of instants covered by an odd number of the input intervals.intervalXorZoned: Return the symmetric difference of two half-open zoned intervals [start, end) — the instants covered by exactly one interval.isValidCalendarZonedInterval: Return true if start and end form a valid GMT zoned interval — both parseable as bare ISO or RFC 9557 calendar-annotated ZonedDateTime strings, and the instant at start is <= the instant at end.isValidZonedInterval: Return true if start and end form a valid zoned interval — both valid ISO ZonedDateTime strings (isValidZonedDateTime) and the instant at start is <= the instant at end.mergeIntervalsZoned: Collapse a list of zoned intervals into the minimum set of non-overlapping intervals.splitIntervalByUnitZoned: Split a zoned interval into sub-intervals of amount × unit.
mapZonedDatesInRange: Return an array of plain ISO date strings covering the inclusive date range between two zoned datetimes.mapZonedHoursInDay: Return an array of zoned datetime strings representing each hour boundary of the anchor’s local day.
hasDaylightSaving: Check whether a timeZone observes daylight saving time at a reference instant.isValidCalendarZonedDateTime: Return true if value is a valid GMT ZonedDateTime string: a bare ISO zoned datetime (“2024-10-03T14:30:45-04:00[America/New_York]”) or an RFC 9557 calendar-annotated one (“2024-10-03T14:30:45-04:00[America/New_York][u-ca=hebrew]”), as Temporal.ZonedDateTime#toString() and convertZonedToCalendar write it.isValidRfc2822DateTime: Return true when value is a real RFC 5322 (RFC 2822) date-time: the date an email Date: header carries, such as Fri, 15 Mar 2024 14:30:00 -0400.isValidRfc3339DateTime: Return true when value is a real RFC 3339 date-time: an ISO 8601 date and time that always states its UTC offset, as Z or ±HH:MM (RFC 3339 §5.6).isValidTimeZone: Validate whether a string is a valid time zone identifier: an IANA name or a UTC offset.isValidZonedDateTime: Validate whether a string is a valid ISO 8601 zoned datetime string.isValidZonedRange: Return true if value1 and value2 form a valid zoned range — both parseable as ISO ZonedDateTime strings and the instant at value1 is <= the instant at value2.