The Catholic Church as well as a number of protestant churches believe that the crucifixion took place on a Friday. And to support that belief, Luke 23:54 is often used as a proof text. That may pose a problem, though, since scripture says that the stay in the heart of the earth would be for three days and three nights. But assuming a Sunday resurrection, a third night would have been missing within that period of time. Any thoughts on how that might be reconciled?