Good one!
'it is clear from the Gospels that Jesus was crucified on Friday, the day of Preparation, that is, the day before the sabbath (Mark 15:42) and raised on Sunday, the first day of the week (Mark 16:2). If the temporal designation of Matthew 12:40 is taken literally, a conflict does exist between the time indicated in this verse and the time indicated in the accounts of the passion story.'