toUTCString() method converts a date to a string,
using the UTC time zone.
A string representing the given date using the UTC time zone.
The value returned by
toUTCString() is a string in the form
Www, dd Mmm yyyy hh:mm:ss GMT,
||Day of week, as three letters (e.g. Sun, Mon, ...)|
||Day of month, as two digits with leading zero if required|
||Month, as three letters (e.g. Jan, Feb, ...)|
||Year, as four or more digits with leading zeroes if required|
||Hour, as two digits with leading zero if required|
||Minute, as two digits with leading zero if required|
||Seconds, as two digits with leading zero if required|
Prior to ECMAScript 2018, the format of the return value varied according to the platform. The most common return value was an RFC-1123 formatted date stamp, which is a slightly updated version of RFC-822 date stamps.
let today = new Date('Wed, 14 Jun 2017 00:00:00 PDT'); let UTCstring = today.toUTCString(); // Wed, 14 Jun 2017 07:00:00 GMT
The definition of 'Date.prototype.toUTCString' in that specification.
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