I remember reading Chronological Aspects of the Life of Christ when I was researching for a paper while I was in Dallas Bible College. It was very helpful, even if my roomie at the dorm, now a Bible translator, still believes Jesus died on a Thursday. I think it was Friday, myself, and that the apostles were using inclusive speech, for three days and three nights, like when Paul says Jesus appeared to Cephas and then the twelve--there weren't thirteen ordained disciples, were there, and wasn't Judas dead by then, but before his replacement was named? More to ponder.