Since it would be costly to have four squads of soldiers guarding a single individual, it is likely that Peter’s arrest took place just before Passover. The Festival of Unleavened Bread begins with the Passover meal on the fourteenth day of Nisan and lasts seven days (see Exodus 12:1–13:10; Leviticus 23:5–8; Deuteronomy 16:3–4).
3 and when he saw that it pleased the Jews, he proceeded to arrest Peter also. This was during the days of Unleavened Bread.