How does Britain know what time it is?

Did I need to get a radio controlled clock and travel to Anthorn to film this video? Absolutely not. But for a few minutes, that clock was really, really accurate. • Thanks to the team at NPL! More about NPL Time: https://www.npl.co.uk/time-frequency/... - their Open Day is on 20th May! https://www.npl.co.uk/open-day

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