The setHours() method of Date instances changes the hours, minutes, seconds, and/or milliseconds for this date according to local time.

Try it


setHours(hoursValue, minutesValue)
setHours(hoursValue, minutesValue, secondsValue)
setHours(hoursValue, minutesValue, secondsValue, msValue)



An integer between 0 and 23 representing the hours.

minutesValue Optional

An integer between 0 and 59 representing the minutes.

secondsValue Optional

An integer between 0 and 59 representing the seconds. If you specify secondsValue, you must also specify minutesValue.

msValue Optional

An integer between 0 and 999 representing the milliseconds. If you specify msValue, you must also specify minutesValue and secondsValue.

Return value

Changes the Date object in place, and returns its new timestamp. If a parameter is NaN (or other values that get coerced to NaN, such as undefined), the date is set to Invalid Date and NaN is returned.


If you do not specify the minutesValue, secondsValue, and msValue parameters, the same values as what are returned by getMinutes(), getSeconds(), and getMilliseconds() are used.

If a parameter you specify is outside of the expected range, other parameters and the date information in the Date object are updated accordingly. For example, if you specify 100 for secondsValue, the minutes are incremented by 1 (minutesValue + 1), and 40 is used for seconds.


Using setHours()

const theBigDay = new Date();


ECMAScript Language Specification
# sec-date.prototype.sethours

Browser compatibility

BCD tables only load in the browser

See also