Date.prototype.setUTCHours()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
ThesetUTCHours() method ofDate instances changes the hours, minutes, seconds, and/or milliseconds for this date according to universal time.
In this article
Try it
const event = new Date("August 19, 1975 23:15:30 GMT-3:00");console.log(event.toUTCString());// Expected output: "Wed, 20 Aug 1975 02:15:30 GMT"console.log(event.getUTCHours());// Expected output: 2event.setUTCHours(23);console.log(event.toUTCString());// Expected output: "Wed, 20 Aug 1975 23:15:30 GMT"Syntax
setUTCHours(hoursValue)setUTCHours(hoursValue, minutesValue)setUTCHours(hoursValue, minutesValue, secondsValue)setUTCHours(hoursValue, minutesValue, secondsValue, msValue)Parameters
hoursValueAn integer between 0 and 23 representing the hours.
minutesValueOptionalAn integer between 0 and 59 representing the minutes.
secondsValueOptionalAn integer between 0 and 59 representing the seconds. If you specify
secondsValue, you must also specifyminutesValue.msValueOptionalAn integer between 0 and 999 representing the milliseconds. If you specify
msValue, you must also specifyminutesValueandsecondsValue.
Return value
Changes theDate object in place, and returns its newtimestamp. If a parameter isNaN (or other values that getcoerced toNaN, such asundefined), the date is set toInvalid Date andNaN is returned.
Description
If you do not specify theminutesValue,secondsValue, andmsValue parameters,the values returned from thegetUTCMinutes(),getUTCSeconds(),andgetUTCMilliseconds() methodsare used.
If a parameter you specify is outside of the expected range,setUTCHours()attempts to update the date information in theDate object accordingly.For example, if you use 100 forsecondsValue, the minutes willbe incremented by 1 (minutesValue + 1), and 40 will be used for seconds.
Examples
>Using setUTCHours()
const theBigDay = new Date();theBigDay.setUTCHours(8);Specifications
| Specification |
|---|
| ECMAScript® 2026 Language Specification> # sec-date.prototype.setutchours> |