'Morning watch' in the Bible

And in the morning watch it happened that Jehovah looked to the army of the Egyptians through the pillar of fire and of the cloud, and troubled the army of the Egyptians.

And it was so on the next day, Saul put the people in three companies, and they came into the middle of the army at the morning watch. And they killed the Ammonites until the heat of the day. And the ones who remained were scattered, so that two of them were not left together.