Last Supper Before or After Passover

Mark 14:12

And on the first day of Unleavened Bread, when they sacrificed the Passover lamb, his disciples said to him, “Where will you have us go and prepare for you to eat the Passover?”

Luke 22:7

Then came the day of Unleavened Bread, on which the Passover lamb had to be sacrificed.

Matthew 26:17

Now on the first day of Unleavened Bread the disciples came to Jesus, saying, “Where will you have us prepare for you to eat the Passover?”

John 19:14

Now it was the day of Preparation of the Passover. It was about the sixth hour. He said to the Jews,”Behold your King!” They cried out, “Away with him, away with him, crucify him!” Pilate said to them, “Shall I crucify your King?” The chief priests answered, “We have no king but Caesar.”