# RFC 5905: Network Time Protocol Version 4: Protocol and Algorithms Specification

**URL:** <https://community.nwtime.org/t/rfc-5905-network-time-protocol-version-4-protocol-and-algorithms-specification/307>\
**Category:** Documentation\
**Created:** [February 12, 2026, 3:18pm UTC](https://community.nwtime.org/t/rfc-5905-network-time-protocol-version-4-protocol-and-algorithms-specification/307 "2026-02-12T15:18:55Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Dru](https://sea1.discourse-cdn.com/flex001/user_avatar/community.nwtime.org/dru/32/337_2.png) [@Dru](https://community.nwtime.org/u/Dru)\
**Post date:** [February 12, 2026, 3:18pm UTC](https://community.nwtime.org/t/rfc-5905-network-time-protocol-version-4-protocol-and-algorithms-specification/307/1 "2026-02-12T15:18:55Z")

</div>

> **[RFC 5905: Network Time Protocol Version 4: Protocol and Algorithms Specification](https://www.rfc-editor.org/rfc/rfc5905.html)**