National Physical Laboratory

Time at NPL

Further Information

Published: 30 September 2010

Authors: John Davis, Setnam Shemar, Peter Whibberly

Related: Time & Frequency

(PDF 0.8 MB)

NPL provides top-level reference standards for time and is the UK's centre for precise time measurement.

The activities of NPL's time group explained - including the operation of the atomic clocks that form the national time scale and the broadcast of the MSF time signal that is used to set radio-controlled clocks throughout the UK. NPL has also provided enhanced time scale algorithms for Galileo -; the European satellite navigation system - by combining the signals from multiple atomic clocks into a highly accurate 'ensemble'.

Last Updated: 8 May 2014
Created: 11 Mar 2011


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