The toUTCString()
method of Date
instances returns a string representing this date in the RFC 7231 format, with negative years allowed. The timezone is always UTC. toGMTString()
is an alias of this method.
The toUTCString()
method of Date
instances returns a string representing this date in the RFC 7231 format, with negative years allowed. The timezone is always UTC. toGMTString()
is an alias of this method.
toUTCString()
None.
A string representing the given date using the UTC time zone (see description for the format). Returns "Invalid Date"
if the date is invalid.
The value returned by toUTCString()
is a string in the form Www, dd Mmm yyyy hh:mm:ss GMT
, where:
Format String | Description |
---|---|
Www | Day of week, as three letters (e.g. Sun , Mon ) |
dd | Day of month, as two digits with leading zero if required |
Mmm | Month, as three letters (e.g. Jan , Feb ) |
yyyy | Year, as four or more digits with leading zeroes if required |
hh | Hour, as two digits with leading zero if required |
mm | Minute, as two digits with leading zero if required |
ss | Seconds, as two digits with leading zero if required |
JavaScript's Date
API was inspired by Java's java.util.Date
library (while the latter had become de facto legacy since Java 1.1 in 1997). In particular, the Java Date
class had a method called toGMTString
— which was poorly named, because the Greenwich Mean Time is not equivalent to the Coordinated Universal Time, while JavaScript dates always operate by UTC time. For web compatibility reasons, toGMTString
remains as an alias to toUTCString
, and they refer to the exact same function object. This means:
Date.prototype.toGMTString.name === "toUTCString";
const d = new Date(0); console.log(d.toUTCString()); // 'Thu, 01 Jan 1970 00:00:00 GMT'
Desktop | Mobile | Server | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | Deno | Node.js | ||
toUTCString |
1 | 12 | 1 | 4 | 1 | 18 | 4 | 10.1 | 1 | 1.0 | 4.4 | 1.0 | 0.10.0 |
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https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toUTCString