People have used the same events they use to mark time to help them
know when to plant and when to harvest their crops.
The Aztecs developed an intricate stone calendar to let them know when
to plant and harvest crops, as well as pray to the gods for the success
of the crops. more
One Egyptian calendar is based on the rising of Sirius. The reappearance
of the star Sirius in the sky was particularly important to the Egyptians
because it told them that the Nile river would soon begin to flood, bringing
water and rich new soil to the dry land where they would plant their crops.
The Mississippians carefully observed the placement of the rising
sun from Monks Mound, located due north. The shadow plot lined up with
specific poles on the Woodhenge circle. This signaled the time to begin
preparing for planting and harvesting. more
The Ngas observe the appearance of the crescent moon to tell them when
the rain will come, thus when they should plant and harvest their crops.
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