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Response

Date

Indicates the date and time at which the response was generated by the server.

Syntax

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

Example

Date: Tue, 12 Mar 2026 10:30:00 GMT

Description

Date represents when the message was originated, in HTTP-date format (RFC 7231).

Automatically set by most servers. Important for caching — validators use it to calculate response age.

Clock synchronization via NTP is recommended for accurate timestamps.

How real sites send this header

Home-page responses of 503 popular sites from the enterno.io /check catalogue, checked in the last 30 days.

99.0% (498 of 503) send Date.

See it on: google.com, yandex.ru, discord.com, github.com, habr.com

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Related Headers

Connection
Controls whether the network connection stays open after the current transaction finishes.
Content-Disposition
Indicates whether the response should be displayed inline or downloaded as a file attachment.
Content-Encoding
Specifies the compression algorithm applied to the response body, such as gzip or brotli.
Content-Length
Specifies the size of the response body in bytes.
Content-Type
Indicates the media type of the response body, telling the browser how to interpret and display the content.
ETag
Provides a unique identifier for a specific version of a resource, enabling efficient conditional requests.

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