How far ahead of UTC a zone is at a given moment, in minutes.
Measures the zone's own wall clock against UTC, which covers the half-hour and three-quarter-hour zones as well as the whole-hour ones.
An IANA zone name, such as Europe/London.
The moment to read the zone at, as epoch milliseconds.
The offset in minutes, negative west of UTC, or null when the runtime cannot read the zone.
How far ahead of UTC a zone is at a given moment, in minutes.
Measures the zone's own wall clock against UTC, which covers the half-hour and three-quarter-hour zones as well as the whole-hour ones.