A.T. Robertson Commentary Mark 15:33

"And when the sixth hour was come, there was darkness over the whole land until the ninth hour." — Mark 15:33 (ASV)

The sixth hour (ωρας εκτης). That is, noon (Jewish time), as the third hour was nine A.M. . See on Mt 27:45 for discussion. Given also by Lu 23:44. Mark gives the Aramaic transliteration as does B in Mt 27:45, which see for discussion.

Forsaken (εγκατελιπες). Some MSS. give ωνειδισας (reproached). We are not able to enter into the fulness of the desolation felt by Jesus at this moment as the Father regarded him as sin (2 Corinthians 5:21). This desolation was the deepest suffering. He did not cease to be the Son of God. That would be impossible.