The getFloat64() method of DataView instances reads 8 bytes starting at the specified byte offset of this DataView and interprets them as a 64-bit floating point number. There is no alignment constraint; multi-byte values may be fetched from any offset within bounds.

The inLeapYear accessor property of Temporal.PlainYearMonth instances returns a boolean indicating whether this year-month is in a leap year. A leap year is a year that has more days (due to a leap day or leap month) than a common year. It is calendar-dependent.

The toLocaleString() method of Temporal.Instant instances returns a string with a language-sensitive representation of this instant. In implementations with Intl.DateTimeFormat API support, this method delegates to Intl.DateTimeFormat.

The timeZoneId accessor property of Temporal.ZonedDateTime instances returns a string representing the time zone identifier used to interpret the internal instant. The string is either a named identifier in the preferred case (such as "America/New_York"), or an offset in the form "±hh:mm". If the time zone has aliases, the timeZoneId is the identifier used to create the ZonedDateTime, without canonicalization to the primary identifier.

The buffer accessor property of DataView instances returns the ArrayBuffer or SharedArrayBuffer referenced by this view at construction time.

The Temporal.Instant.compare() static method returns a number (-1, 0, or 1) indicating whether the first instant comes before, is the same as, or comes after the second instant. It is equivalent to comparing the epochNanoseconds of the two instants.

The minute accessor property of Temporal.PlainTime instances returns a integer from 0 to 59 representing the minute component of this time.

The toLocaleString() method of Temporal.PlainTime instances returns a string with a language-sensitive representation of this time. In implementations with Intl.DateTimeFormat API support, this method delegates to Intl.DateTimeFormat.

The inLeapYear accessor property of Temporal.PlainDateTime instances returns a boolean indicating whether this date is in a leap year. A leap year is a year that has more days (due to a leap day or leap month) than a common year. It is calendar-dependent.

The Temporal.PlainMonthDay() constructor creates Temporal.PlainMonthDay objects.