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This API is available on Firefox OS for internal applications only.


The set method is used to change the system time.

Note: To change the timezone of the system, it's required to use the Settings API.




The new time to set. It can be either a Date object or a number. If a number is provided, it represents the number of millisconds since midnight UTC January 1, 1970.


Not part of any specification.

See also

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 Contributors to this page: chrisdavidmills, fscholz, kscarfone, Prachi_Dighe, justinpotts, Jeremie
 Last updated by: chrisdavidmills,