'Hours' in the Bible

Jesus answered, "Aren't there twelve hours of daylight? If a man walks in the day, he doesn't stumble, because he sees the light of this world.

About three hours later, his wife, not knowing what had happened, came in.

But when they perceived that he was a Jew, all with one voice for a time of about two hours cried out, "Great is Artemis of the Ephesians!"