Passover is on Nisan 14th.
In the night of Nisan 14th the firstborn were killed by the destroyer. Unless there was blood of a lamb on the doorposts.
Nisan 14th starts about 6pm and ends 6pm the next day.
Jesus died 3pm, about the time the lambs were killed by the Jews.
But the destroyer went over Egypt at the night of the 14th.
Say between 1:00am and 4:00am.
So the Jews at Jesus' time kill their lambs after the destroyer 'vistited' them.
The last supper was on passover day and before the detroyer past over the land.