This Bible contradiction is from the EvilBible.com.
Christ was to be three days and three nights in the grave
Matthew 12:40 View context
For as Jonas was three days and three nights in the whale's belly; so shall the Son of man be three days and three nights in the heart of the earth.
Christ was to be but two days and two nights in the grave
Mark 15:25 View context
And it was the third hour, and they crucified him.
Mark 15:42 View context
And now when the even was come, because it was the preparation, that is, the day before the sabbath,
Mark 15:44-46 View context
And Pilate marvelled if he were already dead: and calling [unto him] the centurion, he asked him whether he had been any while dead.
And when he knew [it] of the centurion, he gave the body to Joseph.
And he bought fine linen, and took him down, and wrapped him in the linen, and laid him in a sepulchre which was hewn out of a rock, and rolled a stone unto the door of the sepulchre.
Mark 16:9 View context
Now when [Jesus] was risen early the first [day] of the week, he appeared first to Mary Magdalene, out of whom he had cast seven devils.