JS: Date.UTC

By Xah Lee. Date: . Last updated: .
Date.UTC(year, month)
Return the milliseconds representation of current datetime. Sample return value: 1428601360919.
The year and month arguments are required.
Date.UTC(year, month , date , hours , minutes , seconds , ms)
If less than 2 arguments are given, result is implementation dependent.
The parameters are exactly the same as the multiple number type parameters version of new Date(args), but interprets them as UTC. 〔see Date Constructor〕

Other parameter form such as Date.UTC() or Date.UTC(string) are not allowed.

const d = Date.UTC ( 2016, 12 , 17 );
console.log( d ); // 1484611200000
console.log( (new Date(d)).toString() ); // Mon Jan 16 2017 16:00:00 GMT-0800 (PST)
// these parameters are not allowed
console.log( Date.UTC () === NaN ); // true
console.log( Date.UTC ("2015-04-08T15:48:22.000Z") === NaN ); // true