How did the myth of Jesus' resurrection originate?

[Aractus]

You don't have one story. You have four separate stories which you have stitched together to appear as one narrative.

So? That's the same thing as is done to reconstruct any narrative.

You say that the meal Jesus ate with his disciples was not the passover meal, but in the synoptic gospels Jesus instructs the disciples to make preparations for the Passover. Your only reason for your claim is that John clearly says Jesus was crucified on the Day of Preparation of the Passover. He couldn't have eaten a passover meal if he died the day before passover.

The feast of unleavened bread begins on Nisan 14.

There is only one way in which the order of events fits - and this is because, xpastor, there is only one order of events. There do not need to be any other possibilities to be contrived, because there is only one possibility. If Jesus was crucified on the Sabbath (Nisan 15), then it would mean that he could not have been crucified on a Friday - for if he was, it would mean that there would be three Sabbaths and the women could not return to embalm his body until the second day of the week - Monday.

Besides which, you cannot by any means reconcile the time of day in the different accounts. Mark says that Jesus was crucified at the third hour (about 9 am) and John says it was at the sixth hour (about 12 noon).

That's a pretty weak argument. The daylight portion of the Hebrew day was split into the early morning/3rd hour/6th hour/9th hour. They also used the expression the 11th hour to mean the last hour of daylight - an expression we've carried over today. And these are the phrases that you hear in the NT - and the only writer that breaks with this format is John. John uses "4th hour" once and "10th hour" once. Besides that, no only the 3rd/6th/9th/11th house are mentioned throughout the whole of the NT. I guess they didn't have words for morning evening, etc the way we do. Their use of the word evening referred to the first part of night as you know. You could also use these phrases to describe night, see Acts 23:23.

John knew what he was writing, but he wasn't trying to be as precise as others and "about the 6th hour" refers to about the period of time covering the ~ 3-hour timeframe following the 3rd hour timeframe.