'O'clock' in the Bible

When he went out about nine o'clock, he saw others standing in the marketplace without work.

So off they went. He went out again about noon and about three o'clock and did the same thing.

About five o'clock he went out and found some others standing around. He asked them, "Why are you standing here all day long without work?'

Those who were hired at five o'clock came, and each received a denarius.

About three o'clock, Jesus cried out with a loud voice, "Eli, eli, lema sabachthani?", which means, "My God, my God, why have you forsaken me?"