Time

Human civilisation is dependent on understanding time.

Our agriculture and economy depends on knowing the time of day and what season of the year it is.

Finding out the time would be quite easy were it not for the tilt and orbit of the Earth.

Society has invented a Mean (Average) Sun to tell the time and has created time zones around the world.

Time can be a serious and complicated business, but we'll try to make it understandable.

 

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Speaking clock.com Find out the accurate time

National Physical Laboratory Beginners Guides to Measurement - Atomic Timekeeping