大象传媒

Throughout history, people have measured time. Some of the units of time that are used today are based on the movements of the Sun and the Earth. The Babylonians and Egyptians first divided the daytime into 12 equal hours and the night time into another 12 equal hours, giving us a 24 hour day, which is why mechanical clocks, when invented, went round 12 hours during the morning and another 12 hours in the evening. The Babylonians then divided each hour into 60 smaller minutes and divided the minutes into even smaller seconds.