On Implementing Time

Document Type Expired Internet-Draft (ntp WG)
Authors Aanchal Malhotra  , Kristof Teichel  , Martin Hoffmann  , Willem Toorop 
Last updated 2020-05-22 (latest revision 2019-11-19)
Replaces draft-aanchal-time-implementation-guidance
Stream Internet Engineering Task Force (IETF)
Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes the properties of different types of clocks available on digital systems. It provides implementors of applications with guidance on choices they have to make when working with time to provide basic functionality and security guarantees.


Aanchal Malhotra (aanchal4@bu.edu)
Kristof Teichel (kristof.teichel@ptb.de)
Martin Hoffmann (martin@nlnetlabs.nl)
Willem Toorop (willem@nlnetlabs.nl)

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)