'All night' in the Bible

Then the lookout reported,“Lord, I stand on the watchtower all day,and I stay at my post all night.

I have appointed watchmen upon your walls, Jerusalem; all day and all night they shall never be silent. You who profess Yahweh have no rest.

They sit among the tombs and keep watch all night long. They eat pork, and broth from unclean sacrificial meat is in their pans.