'Night' in the Bible

Then was the secret revealed unto Daniel in a vision of the night. Then Daniel blessed the God of heaven.

In that night Belshazzar the Chaldean King was slain.

Then the king went to his palace, and passed the night fasting; neither were instruments of music brought before him: and his sleep fled from him.

Daniel spake and said, I saw in my vision by night, and, behold, the four winds of heaven brake forth upon the great sea.