Mark 15:42
And now when the even was come, because it was the preparation, that is, the day before the sabbath,
Cross-reference
Mark 16:1 picks up after the Sabbath, mentioning the women buying spices—the natural next step from the burial on Preparation Day.
Matthew 27:57 confirms it was evening on Preparation Day when Joseph of Arimathea came for Jesus' body, matching Mark's timing.
Luke 23:50-54 expands on Joseph's request and burial, explicitly noting it was Preparation Day and the Sabbath was beginning.
John 19:38 adds that Joseph was a secret disciple, while agreeing with Mark that he asked for Jesus' body on Preparation Day.
John 19:31 explains why the Jews asked for legs broken—to avoid bodies remaining on the Sabbath, a high day.
John 19:14 adds that the day of Preparation was for Passover, clarifying the timing of Jesus' crucifixion relative to the feast.
Matthew 27:62 refers to the day after Preparation Day as 'the next day,' continuing the timeline from Mark's mention of Preparation Day.