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Definition:
Hours which form a set division (usually 1/12th) of the period of daylight (and similarly of night). The length of a temporal hour on a summer day will be longer than that for a winter day.
Related Terms
• Equinoctial hours
Ancient Egypt: the Father of Time
The way in which we divide the day into hours and minutes, as well as the structure and length of the yearly calendar, owes much to pioneering developments in ancient Egypt.
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Temporal hours
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