In Regards to S.E. Answer: The Consummate Refutation of Christianity—if the Last Supper was a Passover Feast.
Since any day of the week that Passover falls on is considered a Sabbath, doesn't it make more sense to infer that the crucifixionweek of Jesus involvedthe crucifixion involve a double Sabbath, (two Sabbath Days in it)?
Luke 6:1 - Now it happened that Jesus was passing through some grainfields on a Sabbath, (σαββάτῳ δευτεροπρώτῳ), and His disciples were picking the heads of grain, rubbing them in their hands, and eating them.
John 19:31 - Then the Jews sought to take the bodies down, for that Sabbath was the Passover Sabbath).
If so, then an exact date of Jesus' crucifixion can be inferred, because there are very few Friday's that fall exactly 14 days after the Spring Equinox—making that Friday and Saturday both, Sabbaths. It is possible to use the U.S. Naval Observatory data for this.