'Passover' in the Bible

and when he saw that it pleased the Jews, he proceeded to have Peter arrested as well. This was during the days of Unleavened Bread [the Passover week].

After the arrest, he put him in prison and assigned four squads of four soldiers each to guard him, intending to bring him out to the people after the Passover.

We sailed from Philippi after the days of Unleavened Bread (Passover week), and within five days we reached them at Troas, where we stayed for seven days.