The date of the next (after the current instant) daylight saving time transition for the time zone.
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Xcode 8.0+
Depending on the time zone, the value of this property may represent a change of the time zone’s offset from GMT. The value is
nil if the time zone does not currently observe daylight saving time.