Mark 15:25

St. Mark is the only evangelist who says it was the third hour. St. John says it was the sixth. But these may easily be reconciled by supposing that he was crucified towards the end of the third hour, that is, about eleven of the clock, or half-past eleven, which being near the sixth hour, or twelve, the evangelist might say it was the sixth hour. (Nicholas of Lyra) --- The third hour. The ancient account divided the day into four parts, which were named from the hour from which they began: the first, third, sixth, and ninth hour. Our Lord was crucified a little before noon; before the third hour had quite expired; but when the sixth hour was near at hand. (Challoner)