In agricultural societies, what observation often signaled the commencement of the rainy season or the time to plant seeds?

Answer

The rising of specific stars, known as heliacal rising.

Heliacal rising—the first appearance of a star just before sunrise—was used by many cultures to signal vital seasonal changes necessary for planting and harvesting.

In agricultural societies, what observation often signaled the commencement of the rainy season or the time to plant seeds?

#Videos

The History of Astronomy in the Ancient World - YouTube

ancientastronomyobservationstudycalendar