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fixdate

1.0.0
1.0.0

Format and parse HTTP-date timestamps for HTTP headers like Date, Last-Modified, and Expires (RFC 9110)

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# fixdate



[![Package Version](https://img.shields.io/hexpm/v/fixdate)](https://hex.pm/packages/fixdate)

[![Hex Docs](https://img.shields.io/badge/hex-docs-ffaff3)](https://fixdate.hexdocs.pm/)



Format and parse HTTP-date timestamps, the date format used in HTTP headers

such as `Date`, `Last-Modified`, and `Expires` ([RFC 9110 5.6.7](https://datatracker.ietf.org/doc/html/rfc9110#section-5.6.7)).



```sh

gleam add fixdate

```



```gleam

import fixdate

import gleam/time/calendar

import gleam/time/timestamp



pub fn main() -> Nil {

  let date = timestamp.from_unix_seconds(1_782_697_748)

  echo fixdate.to_string(date)

  // -> "Mon, 29 Jun 2026 01:49:08 GMT"



  // Parse an HTTP date back into a timestamp.

  let assert Ok(ts) = fixdate.parse("Mon, 29 Jun 2026 01:49:08 GMT")

  echo timestamp.to_rfc3339(ts, calendar.utc_offset)

  // -> "2026-06-29T01:49:08Z"



  Nil

}

```