Gets a timezone for the given id.
The id of the timezone
Checks if there is a timezone for the given id stored in this manager.
The id of the timezone
Checks if the given timezone id is an alias.
The id of the timezone
Lists all timezones.
Whether or not to include aliases
Registers a new timezone-alias
The timezone-id of the alias
The timezone-id to resolve the alias to
Registers a timezone based on ics data.
The id of the timezone
The iCalendar timezone definition
Unregisters a timezone-alias.
The alias to unregister
Unregisters a timezone.
Unregisters a timezone by Id
Clear all timezones