The way passover works is that sundown the day before what WE would call passover was the start of passover and would continue to the next day ending with sundown of the next evening so...
Matthew, Mark and Luke say that the last supper happened ON PASSOVER (i.e. after sundown, with the meal being passover) but John says that the last supper happened BEFORE PASSOVER (i.e. the meal wasn't passover, it was the start of/sundown of the day previous).
Got that?
Is not true. Jesus is crucified on passover eve in John and it even makes it very explicit.
There's a problem there, because John says (quite clearly) that the last supper happens BEFORE passover, so he was crucified before it - but the others have it that Jesus was crucified AFTER passover (i.e. in the daytime after the passover meal they'd held the previous night).
Edited by greyseal, : No reason given.