utc

calculate

• addUtc: Add a temporal amount to a UTC datetime string and return a new UTC Instant string.
• diffUtc: Return the difference between two UTC datetimes measured in the given date-time unit.
• diffUtcAsDuration: Return the difference between two UTC datetimes as an ISO 8601 duration string, bridging to the duration namespace (see parseDuration, normalizeDuration).
• endOfQuarterForUtc: Return the end of the quarter for a given UTC Instant string.
• endOfUtc: Return the end of the specified date-time unit for a given UTC datetime string.
• isBetweenUtc: Return true when value is between start and end (inclusive by default).
• maxUtc: Return the latest (maximum) of the given UTC datetime values.
• minUtc: Return the earliest (minimum) of the given UTC datetime values.
• roundUtc: Round a UTC datetime string to the specified unit.
• setUtc: Return a UTC Instant string with the given fields set on value.
• sortUtc: Sort an array of UTC datetime values in ascending or descending order.
• startOfQuarterForUtc: Return the start of the quarter for a given UTC datetime string.
• startOfUtc: Return the start of the specified date-time unit for a given UTC datetime string.
• subtractUtc: Subtract a temporal amount from a UTC datetime string and return a new UTC Instant string.

chop

• chopUtc: Return the UTC datetime string with a trailing Z removed if present.

compare

• areUtcEqual: Return whether value1 and value2 represent the same instant.
• areUtcEqualBy: Compare two UTC ISO datetime strings for equality at a given unit.
• isAfterUtc: Return whether value1 represents an instant strictly after value2.
• isBeforeUtc: Return whether value1 represents an instant strictly before value2.

convert

• convertUtcToPlainDate: Convert a UTC datetime string to a plain date string in the format “YYYY-MM-DD”.
• convertUtcToPlainDateTime: Convert a UTC datetime string to a plain datetime string in the format “YYYY-MM-DDTHH:mm:ss”.
• convertUtcToPlainTime: Convert a UTC datetime string to a plain time string in the format “HH:mm:ss”.
• convertUtcToUnix: Convert a UTC Instant string to a unix epoch value in milliseconds or seconds.
• convertUtcToZoned: Convert a UTC Instant string to a zoned ISO 8601 datetime string.

format

• formatCalendarUtc: Format a UTC ISO string as a relative day label plus time-of-day, e.g. “Tomorrow at 2:30 PM” — the UTC counterpart of formatCalendar.
• formatHttpDate: Format a UTC ISO 8601 datetime string as an HTTP header date — the RFC 9110 IMF-fixdate that headers like Last-Modified/Date/Expires require.
• formatRelativeUtc: Format the relative time between a UTC ISO string and a reference instant.
• formatUtc: Format a UTC ISO string as a localized date/time string.

get

• getUtcDay: Return the current day from UTC as a zero-padded string.
• getUtcHour: Return the current hour from UTC as a zero-padded string.
• getUtcMicrosecond: Return the current microsecond from UTC as a zero-padded string.
• getUtcMillisecond: Return the current millisecond from UTC as a zero-padded string.
• getUtcMinute: Return the current minute from UTC as a zero-padded string.
• getUtcMonth: Return the current month from UTC as a zero-padded string.
• getUtcNanosecond: Return the current nanosecond from UTC as a zero-padded string.
• getUtcNow: Return the current UTC instant as an ISO Instant string.
• getUtcNowUnit: Return the requested unit value from the current UTC instant.
• getUtcSecond: Return the current second from UTC as a zero-padded string.
• getUtcYear: Return the current year from UTC as a zero-padded string.

interval

• intervalAbutsUtc: Return true when two half-open UTC intervals [aStart, aEnd) and [bStart, bEnd) are exactly adjacent — one ends where the other starts, so they share nothing and leave no gap.
• intervalContainsUtc: Return true when pointOrStart lies in the half-open interval [intervalStart, intervalEnd) (3-arg), or when the inner interval [innerStart, innerEnd) lies within it (4-arg).
• intervalCountUtc: Count how many unit boundaries a UTC interval crosses.
• intervalDifferenceUtc: Return the portion(s) of interval A not covered by interval B.
• intervalDivideEquallyUtc: Split a UTC interval into n equal-length sub-intervals.
• intervalEngulfsUtc: Return true when the half-open interval B [bStart, bEnd) lies within the half-open interval A [aStart, aEnd) — every instant of B is also in A.
• intervalFromDurationUtc: Construct a UTC interval from a single point plus an ISO 8601 duration, anchored at either end.
• intervalIntersectionUtc: Return the overlapping span of two UTC intervals, or null when they do not overlap.
• intervalLengthUtc: Return the exact length of a UTC interval in unit, as a real (possibly fractional) number.
• intervalOverlappingDaysUtc: Return how many distinct UTC calendar dates two UTC intervals share.
• intervalsOverlapUtc: Return true when the half-open UTC intervals [aStart, aEnd) and [bStart, bEnd) share at least one instant.
• intervalSplitAtUtc: Split a UTC interval at arbitrary points, producing consecutive sub-intervals.
• intervalUnionUtc: Return the combined span of two UTC intervals, or null when they are disjoint.
• intervalXorAllUtc: Return the symmetric difference across a list of UTC intervals — the set of instants covered by an odd number of the input intervals.
• intervalXorUtc: Return the symmetric difference of two UTC intervals — time covered by exactly one interval.
• isValidUtcInterval: Return true if start and end form a valid UTC interval — both parseable as ISO UTC datetime strings and the instant at start is <= the instant at end.
• mergeIntervalsUtc: Collapse a list of UTC intervals into the minimum set of non-overlapping intervals.
• splitIntervalByUnitUtc: Split a UTC interval into sub-intervals of amount × unit.

parse

• parseDateFromUtc: Extract the date portion from a UTC datetime string.
• parseDayFromUtc: Return the day of month (1-31) from a UTC datetime string.
• parseDayOfWeekFromUtc: Return the day of week (1-7) from a UTC datetime string.
• parseHourFromUtc: Return the hour (0-23) from a UTC datetime string.
• parseHttpDate: Parse an HTTP header date — the RFC 9110 HTTP-date that headers like Last-Modified/Date/Expires carry — into a UTC ISO 8601 datetime string.
• parseMicrosecondFromUtc: Return the microsecond (0-999) from a UTC datetime string.
• parseMillisecondFromUtc: Return the millisecond (0-999) from a UTC datetime string.
• parseMinuteFromUtc: Return the minute (0-59) from a UTC datetime string.
• parseMonthFromUtc: Return the month (1-12) from a UTC datetime string.
• parseNanosecondFromUtc: Return the nanosecond (0-999) from a UTC datetime string.
• parseSecondFromUtc: Return the second (0-59) from a UTC datetime string.
• parseTimeFromUtc: Extract the time portion from a UTC datetime string.
• parseUnitFromUtc: Extract a unit from a UTC datetime string.
• parseWeekFromUtc: Return the week number from a UTC datetime string.
• parseYearFromUtc: Return the year from a UTC datetime string.

validate

• isValidHttpDate: Return true when value is a real HTTP header date: the RFC 9110 §5.6.7 HTTP-date that headers like Last-Modified, Date and Expires carry, such as Fri, 15 Mar 2024 14:30:00 GMT.
• isValidUtc: Return true when the provided string is a valid ISO 8601 UTC datetime.
• isValidUtcRange: Return true if value1 and value2 form a valid UTC range — both parseable as ISO UTC datetime strings and the instant at value1 is before the instant at value2.
• isValidUtcTimestamp: Return true when value is a real UTC instant written as YYYY-MM-DDTHH:MM:SS[.f]Z and nothing else: a narrower check than isValidUtc.