Date.prototype.setUTCFullYear()

The setUTCFullYear() method of {{jsxref("Date")}} instances changes the year for this date according to universal time.

{{InteractiveExample("JavaScript Demo: Date.prototype.setUTCFullYear()")}}

```js interactive-example const event = new Date("December 31, 1975 23:15:30 GMT-3:00");

console.log(event.getUTCFullYear()); // Expected output: 1976

console.log(event.toUTCString()); // Expected output: "Thu, 01 Jan 1976 02:15:30 GMT"

event.setUTCFullYear(1975);

console.log(event.toUTCString()); // Expected output: "Wed, 01 Jan 1975 02:15:30 GMT"

## Syntax

```js-nolint
setUTCFullYear(yearValue)
setUTCFullYear(yearValue, monthValue)
setUTCFullYear(yearValue, monthValue, dateValue)

Parameters#

• yearValue
• : An integer representing the year. For example, 1995.
• monthValue {{optional_inline}}
• : An integer representing the month: 0 for January, 1 for February, and so on.
• dateValue {{optional_inline}}
• : An integer between 1 and 31 representing the day of the month. If you specify dateValue, you must also specify monthValue.

Return value#

Changes the {{jsxref("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.

Description#

If you do not specify the monthValue and dateValue parameters, the values returned from the {{jsxref("Date/getUTCMonth", "getUTCMonth()")}} and {{jsxref("Date/getUTCDate", "getUTCDate()")}} methods are used.

If a parameter you specify is outside of the expected range, setUTCFullYear() attempts to update the other parameters and the date information in the {{jsxref("Date")}} object accordingly. For example, if you specify 15 for monthValue, the year is incremented by 1 (yearValue + 1), and 3 is used for the month.

Examples#

Using setUTCFullYear()#

const theBigDay = new Date();
theBigDay.setUTCFullYear(1997);

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Date.prototype.getUTCFullYear()")}}
• {{jsxref("Date.prototype.setFullYear()")}}