Date header
The HTTP Date request and response header contains the date and time at which the message originated.
| Header type | Request header, Response header |
|---|---|
| Forbidden request header | Yes |
Syntax
Date: <day-name>, <day> <month> <year> <hour>:<minute>:<second> GMT
Directives
<day-name>-
One of
Mon,Tue,Wed,Thu,Fri,Sat, orSun(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
Response with a Date header
The following HTTP message is a successful 200 status, with a Date header showing the time the message originated.
Other headers are omitted for brevity:
HTTP/1.1 200
Content-Type: text/html
Date: Tue, 29 Oct 2024 16:56:32 GMT
<html lang="en-US" …
Attempting to set the field value in JavaScript
The Date header is a Forbidden request header, so this code cannot set the message Date field:
fetch("https://httpbin.org/get", {
headers: {
Date: new Date().toUTCString(),
},
});
Specifications
| Specification |
|---|
| HTTP Semantics # field.date |