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/HTTP

Date

Date

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

Warning: Date is listed in the forbidden header names in the fetch spec, so this code will not send the Date header:

fetch('https://httpbin.org/get', {
  'headers': {
    'Date': (new Date()).toUTCString()
  }
})

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

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
Date
Yes
12
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes

See also

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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Date