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Non-standard
This feature is not on a current W3C standards track, but it is supported on the Firefox OS platform. Although implementations may change in the future and it is not supported widely across browsers, it is suitable for use in code dedicated to Firefox OS apps.
This API is available on Firefox OS for internal applications only.
Summary
Returns a MozTimeManager object you can use to change the device's time.
Syntax
var time = window.navigator.mozTime;
Value
navigator.moztime is a MozTimeManager object.
Specifications
Not part of any specification.