'Fourth' in the Bible

So on the fourth day they said to Samson's wife, Get from your husband the answer to his question by some trick or other, or we will have you and your father's house burned with fire; did you get us here to take all we have?

Now on the fourth day they got up early in the morning and he made ready to go away; but the girl's father said to his son-in-law, Take a little food to keep up your strength, and then go on your way.