Luke 22:7

New English Translation

⁷Then the day for the feast^[a] of Unleavened Bread came, on which the Passover lamb had to be sacrificed.^[b]

Luke 22:7 tn The words “for the feast” are not in the Greek text, but have been supplied for clarity.
Luke 22:7 sn Generally the feast of Unleavened Bread would refer to Nisan 15 (Friday), but the following reference to the sacrifice of the Passover lamb indicates that Nisan 14 (Thursday) was what Luke had in mind (Nisan = March 27 to April 25). The celebration of the Feast of Unleavened Bread lasted eight days, beginning with the Passover meal. The celebrations were so close together that at times the names of both were used interchangeably.

New English Translation (NET)