JavaScript setHours() Method

Set the hour to 15:

var d = new Date();
d.setHours(15);

The result of d will be:

More "Try it Yourself" examples below.

Definition and Usage

The setHours() method sets the hour of a date object.

This method can also be used to set the minutes, seconds and milliseconds.

Method
setHours()	Yes	Yes	Yes	Yes	Yes

Date.setHours(hour,min,sec,millisec)

Parameter	Description
hour	Required. An integer representing the hour. Expected values are 0-23, but other values are allowed: -1 will result in the last hour of the previous day 24 will result in the first hour of the next day
min	Optional. An integer representing the minutes. Expected values are 0-59, but other values are allowed: -1 will result in the last minute of the previous hour 60 will result in the first minute of the next hour
sec	Optional. An integer representing the seconds Expected values are 0-59, but other values are allowed: -1 will result in the last second of the previous minute 60 will result in the first second of the next minute
millisec	Optional. An integer representing the milliseconds Expected values are 0-999, but other values are allowed: -1 will result in the last millisecond of the previous second 1000 will result in the first millisecond of the next second

Return Value:	A Number, representing the number of milliseconds between the date object and midnight January 1 1970
JavaScript Version:	1.0

Set the time to 15:35:01

var d = new Date();
d.setHours(15, 35, 1);

The result of d will be:

Set the time to 48 hours ago:

var d = new Date();
d.setHours(d.getHours() - 48);

The result of d will be: