The crucifixion darkness is an event described in the synoptic gospels in which the sky becomes dark in daytime during the crucifixion of Jesus for roughly three hours. Most ancient and medieval Christian writers treated this as a miracle, and believed it to be one of the few episodes from the New Testament which were confirmed by non-Christian sources. Modern scholars have found references by early historians to accounts of this event outside the New Testament, although no copies of the referenced accounts survive.