'Hours' in the Bible

Jesus answered, 'Are there not twelve hours in the day? if any one may walk in the day, he doth not stumble, because the light of this world he doth see;

And it came to pass, about three hours after, that his wife, not knowing what hath happened, came in,

and having known that he is a Jew, one voice came out of all, for about two hours, crying, 'Great is the Artemis of the Ephesians!'