What are the differences between the passion narratives in the synoptic Gospels and John?

The synoptic gospels describe the mission of Jesus as involving a period of apparently less than one year. Since Luke's Gospel states that John the Baptist began to preach in 28 CE, this suggests that the crucifixion of Jesus could have been in 30 CE.

John's Gospel makes it clear that, in the author's view, the mission of Jesus took three years, with Jesus going to Jerusalem for the annual Passover festivals. Assuming Luke is correct on the date on which John began to preach, 30 CE becomes too early for the crucifixion of Jesus, which in John's Gospel could have been in 33 CE.

Other dates for the crucifixion of Jesus have been suggested, but these are the most popular.