After discussing the scholarly preference for dating Jesus' crucifixion to 7 April 30 CE, this article argues that the precise date can no longer be recovered. All we can claim with any degree of historical certainty is that Jesus died some time around Passover (perhaps a week or so before the feast) between 29 and 34 CE. The emergence of the Johannine tradition (in which Jesus died on the day of Preparation) and the Markan tradition (in which Jesus died on the Passover itself) are explored through the lens of social/collective memory.