javascript setHours date set to previous date

Question

I want to set time to 0 using javascript's setHours() method but it changes the day of the month to one less than the actual day. Sample code:

var d = new Date();  //2017-09-18T04:58:34.223Z
d.setHours(0,0,0,0);  //2017-09-17T18:30:00.000Z

Answer 1

The setHours() method sets the hours for a specified date according to local time, and returns the number of milliseconds since 1 January 1970 00:00:00 UTC until the time represented by the updated Date instance.

To set the time to midnight in universal time ,use setUTCHours().

The getUTCHours() method returns the hours in the specified date according to universal time.

var date = new Date();
console.log(date.toISOString());
date.setUTCHours(0,0,0,0);
console.log(date.toISOString());