'Morning watch' in the Bible

At the morning watch, the Lord looked down on the army of the Egyptians through the pillar of fire and cloud and brought the army of the Egyptians into confusion.

The next morning Saul put the people in three companies; and they came into the midst of the camp at the morning watch and struck down the Ammonites until the heat of the day. Those who survived were scattered, so that no two of them were left together.