timemachine 
Test your time-dependent app by monkey patching the Date function and overriding your system time. Timemachine is compatible with global namespaces, RequireJS, CommonJS and NodeJS.
Installation
Bower
$ bower install timemachineNPM
$ npm install timemachineUsage
Config
timemachine.config({
dateString: 'December 25, 1991 13:12:59'
});
console.log(new Date()); // December 25, 1991 13:12:59| Parameter | Description | Default |
|---|---|---|
dateString |
Date you want set as a string | Thu, 01 Jan 1970 00:00:00 GMT |
timestamp |
Date you want set as a timestamp | 0 |
difference |
Time offset in milliseconds | 0 |
tick |
Whether the system clock should continue ticking | false |
keepTime |
Whether the system time should be kept | false |
Reset
timemachine.reset();
console.log(new Date()); // Your real system time