Introducing the issue of the three days and three nights of Jesus entombment. Discussing the problems with the traditional view and the goals to be attained by this writing.
Dealing with the literalness of the sign, the circumstances in which it was given, and to whom it was spoken.
The meal that Jesus and his disciples took on the night of his betrayal and arrest was the traditional Passover Seder, observed on the 14th day of the first Jewish month, Nisan. Also that John reports the same meal on the same night, but in a different manner.
Stating the fact that during the week of Passover, there were two Sabbaths. This is a key element to a proper understanding of the chronology of events.
The first day of the week must be understood from a Jewish background, and not Roman.
A time-frame based upon the evidence given, and taking into account the full three days and nights of Jesus entombment.