The original 12 hour system used by the Egyptians and Greeks was twelve hours of night and twelve hours of day with the hour length actually changing with the seasons. The twelve number actually comes from Egyptian style finger counting where you count each of three knuckles on four fingers (4*3=12).
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Is this still revelant?
NamerOfStars | 290 opinions shared on Other topic.
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Because Egypt is close to the equator. That means that its day-night cycle is of a very consistent length. So in dividing up the day, they allocated ten units of daylight and ten units of darkness, plus two hours for each transition.
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