'Hours' in the Bible

Jesus answered, “Are there not twelve hours [of light] in the day? Anyone who walks in the daytime does not stumble, because he sees [by] the light of this world.

Now after an interval of about three hours his wife came in, not knowing what had happened.

But when they realized that he was a Jew, a single outcry went up from the crowd as they shouted for about two hours, “Great is Artemis of the Ephesians!”