National Physical Laboratory

Don't forget: the clocks go back!

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The UK's clocks go back one hour to GMT at 2 am on Sunday 26 October 2014.

As the UK's home of precise time and frequency measurement, NPL provides access to a reliable and trusted source of time.

Ever wondered how we measure the Second - the base unit of time?

What is Time?

Read our frequently asked questions about Time

Find out more about Time at NPL

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Last Updated: 23 Oct 2014
Created: 22 Oct 2014


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