The ancient Egyptians marked the change in seasons by the changes in the Nile. Unlike us, they had only three seasons. The first season, July through October is Akhet, when Ethiopia's rains fill the streams that flood the Nile. November through April is the second season, Peret when the Egyptians planted their crops. Shemu, the last season, is when they harvested crops. May through June is when the Nile retreats and the side channels dried up.