field Registered
Verified 2026-09-18 · registry updated
2026-08-28Date
Records when a response message was originated.
Origin servers should send Date on most responses. Intermediaries use it with age and freshness calculations.
httpheadercache
Reference (http)
Date: Tue, 15 Nov 1994 08:12:31 GMT
Origin servers should send Date on most responses. Intermediaries use it with age and freshness calculations.
Common mistakes
- Generating local time or a non-RFC HTTP date.
IANA registry: http-fields/field-names
Registry reference: RFC 9110, Section 6.6.1: HTTP Semantics