Synchronise Clocks!

Cantaloop

For our UK viewers, on channel Yesterday, tonight's episode of "Secrets of the Underground" Leicester Square (S3 Ep6) devoted the last five minutes to the various clocks and synchronisation through the years on the underground.

#tvshows
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redsix
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Wait til you see how the swiss train system clocks synchronise… that blew my mind when I moved here from the UK