Response · Response header
Date
When the response was generated.
What is Date?
The Date header records the moment the response left the origin server. Used by caches to compute freshness and Age.
Typical usage
Set automatically by web servers.
Examples
Date: Wed, 21 Oct 2025 07:28:00 GMTSpecification
RFC 9110 §6.6.1
Frequently asked questions
What is the Date HTTP header?
The Date header records the moment the response left the origin server. Used by caches to compute freshness and Age.
Is Date a request or response header?
Date is a response header — the server sends it to the client. Set automatically by web servers.
What does a Date header look like?
A typical Date header looks like: Date: Wed, 21 Oct 2025 07:28:00 GMT.
Related headers
Age
How many seconds the response has been in a shared cache.
Expires
Declares a wall-clock deadline (HTTP-date) for how long the response stays fresh. Includes exact format, 4 production-ready server configs (Apache, Nginx, Express, CDNs), and the deprecation caveats with Cache-Control.
Location
The redirect target (3xx) or newly created resource URL (201).
Retry-After
How long the client should wait before retrying.
Server
Identifies the server software.
Allow
Which HTTP methods the target resource supports.