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The equals() method of Temporal.ZonedDateTime instances returns true if this date-time is equivalent in value to another date-time (in a form convertible by Temporal.ZonedDateTime.from()), and false otherwise. They are compared both by their instant values, time zones, and their calendars, so two date-times from different calendars or time zones may be considered equal by Temporal.ZonedDateTime.compare() but not by equals().

The subtract() method of Temporal.ZonedDateTime instances returns a new Temporal.ZonedDateTime object representing this date-time moved backward by a given duration (in a form convertible by Temporal.Duration.from()).

The millisecond accessor property of Temporal.PlainTime instances returns an integer from 0 to 999 representing the millisecond (10-3 second) component of this time.

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.

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