Dr. Walsh, Harmony of the Gospel Narratives, note 35.
We have not mentioned the view of those who hold that the error from transcription occurred in St. Mark and not in St. John, and that we ought to read “sixth” instead of “third” in St. Mark xv. 25. For, as Patrizzi well points out, if St. Mark had written “sixth” in verse 25, he would not, after describing the mocking of Christ upon the cross, say in verse 33: “And when the sixth hour was come there was darkness over the whole earth until the ninth hour.” If error has crept in, then, it is not in St. Mark.