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16 Aug 2016 [08:42]
Thanks to Frank Barker for restarting
16 Aug 2016 [07:42]
for some reason the clock stopped at 8.39am (7.39am GMT). Surely not a pigeon? See this <[link]> for a 6-minute zoom in of pendulum amplitude (each dot is a 3-second tick). Rather curious that it stopped for about 20 seconds then ran on fine for about 60 seconds and then stopped for good. One theory is that the minute and hour hands interfere with each other as they pass, but these photos [link] [link] taken at 8.44am a few weeks later seem to show that it's OK

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Interval between data points: seconds [either 3 seconds (weather data is duplicated) or multiples of 60 seconds (all data is averaged)].

[Raw data: Clock | Weather]

Contact:, Trinity College, Cambridge