For the primitive men, it was always tempting to use the Moon to measure time. They had understood its periodic behavior and its relationship with some nature’s cycles. That led to design the first Lunar Calendars. But as time passed, the failures of those calendars became evident: the time of every season began to slip through the months. Hence, how would they choose the best time for planting and harvesting?
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| The valley of the Nile. Source: NASA |
