Like many other events, the trial of Pilate also shows slight differences in the sequence of events among the Gospels. It seems that each Gospel writer arranged the order according to their own intentions. What truly matters is not which event happened first, but that these events actually took place and what stories unfolded within them. Therefore, you don’t need to place too much significance on the differences in order.
In any case, for this novel, I have proceeded on the assumption that all the biblical events are presented in chronological order. Thus, I have arranged the narrative so that, as in the Synoptic Gospels, Jesus is first handed over to be crucified, and then, after the flogging, the later events described in John’s Gospel take place once again.
At this point, it may seem that Mark (15:25) and John (19:14) present the time of the crucifixion and the trial in reverse order. This is because the two Gospels use different systems of timekeeping: as mentioned earlier, the Synoptic Gospels use the Jewish system, while John uses the Roman system. If you understand that the trial began around six in the morning and Jesus was crucified at nine, there is no real contradiction. Since the Bible emphasizes the overall context, rather than focusing on individual verses, I believe you will gain a much deeper understanding if you take a broader perspective.
