Theophylact of Ohrid

But how is it that Mark says Christ was crucified at the third hour, while Matthew says that the darkness occurred at the sixth hour? It may be said that He was crucified at the third hour, and that the darkness began from the sixth hour and lasted until the ninth.

Commentary on Mark ↗

Augustine of Hippo

If Jesus was given up to the Jews to be crucified, when Pilate sat down at his tribunal about the sixth hour, as John relates, how could He be crucified at the third hour, as many persons have thought from not understanding the words of Mark? First then let us see at what hour He might have been crucified, then we shall see why Mark said that He was crucified at the third hour. …

Catena Aurea by Aquinas ↗

Bede

Or else, in the transverse beam of the cross, where the hands are fixed, the joy of hope is set forth; for by the hands we understand good works, by its expansion the joy of him who does them, because sadness puts us in straits. By the height to which the head is joined, we understand the expectation of reward from the lofty righteousness of God; by the length, over which the whole body is stretched, patience, wherefore patient men are called long-suffering; by the depth, which is fixed in the ground, the hidden Sacrament …

Catena Aurea by Aquinas ↗