Unsure,
The silence of John on the three hours of darkness at midday and a resurrection of "many saints" who went into Jerusalem and "appeared to many" at the time of Jesus' crucifixion (Luke 23:44 Matt. 27:45 Mark 15:33) is confounding.
The apostle John was allegedly the author of the fourth gospel. If he was, then he would have been a witness to the crucifixion and the events that accompanied it, because John 19:26-27 claims that while Jesus was on the cross, he entrusted the care of his mother to "the disciple standing by whom he [Jesus] loved."
Later on, the gospel of John claims that it was written by the disciple whom Jesus loved (John 21:20-24). If all this information is true, then the writer of the gospel of John was present at the crucifixion to witness everything that happened there, yet John said nothing at all about three hours of darkness at midday or a resurrection of "many saints" who went into Jerusalem and "appeared to many."
Who can believe that a person who had seen such remarkable events as these would have written an account of that day without mentioning them?