Date

The Date general HTTP header contains the date and time at which the message was originated.

Note that Date is listed in the forbidden header names in the fetch spec - so this code will not send Date header:

fetch('https://httpbin.org/get', {
    'headers': {
        'Date': (new Date()).toUTCString()
    }
})
Header type General header
Forbidden header name yes

Syntax

Date: <day-name>, <day> <month> <year> <hour>:<minute>:<second> GMT

Directives

<day-name>
One of "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", or "Sun" (case-sensitive).
<day>
2 digit day number, e.g. "04" or "23".
<month>
One of "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" (case sensitive).
<year>
4 digit year number, e.g. "1990" or "2016".
<hour>
2 digit hour number, e.g. "09" or "23".
<minute>
2 digit minute number, e.g. "04" or "59".
<second>
2 digit second number, e.g. "04" or "59".
GMT

Greenwich Mean Time. HTTP dates are always expressed in GMT, never in local time.

Examples

Date: Wed, 21 Oct 2015 07:28:00 GMT

new Date().toUTCString()
// "Mon, 09 Mar 2020 08:13:24 GMT"

Specifications

Specification Title
RFC 7231, section 7.1.1.2: Date Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content

Browser compatibility

BCD tables only load in the browser

See also