Returns a time zone object offset from Greenwich Mean Time by a given number of seconds.


convenience init(forSecondsFromGMT seconds: Int)



The number of seconds by which the new time zone is offset from GMT.

Return Value

A time zone object offset from Greenwich Mean Time by seconds.


The name of the new time zone is GMT +/– the offset, in hours and minutes. Time zones created with this method never have daylight savings, and the offset is constant no matter the date.

See Also

Creating Time Zones

init?(name: String)

Returns a time zone initialized with a given identifier.

init?(name: String, data: Data?)

Initializes a time zone with a given identifier and time zone data.

init?(abbreviation: String)

Returns the time zone object identified by a given abbreviation.

class var knownTimeZoneNames: [String]

Returns an array of strings listing the IDs of all the time zones known to the system.

class var abbreviationDictionary: [String : String]

Returns a dictionary holding the mappings of time zone abbreviations to time zone names.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.

Learn more about using Apple's beta software