There is a theory that the author of Mark believed it was the Thursday, the Sabbath he refers to is the Friday due to the Passover. The authors of Matthew and Luke just copied Mark, and assumed he meant the Saturday as the Sabbath. This would mean if Jesus was raised on the third day, that was the Saturday, which is good as that is the Sabbath. the empty tomb was then found the next day, after Jesus had gone on ahead to Galilee (according to Mark). I have not looked at how the text works, but it seems reasonable.GoJohn also has Jesus die on Passover versus in the synoptics Jesus dies the next day, after Passover. It is a radical departure for the most important alleged event on the planet and for an alleged Jewish apostle who was allegedly present and would have known the difference. It is obvious the Gospels are mythical stories.