John 4:51

And as he was now going down, his servants met him, saying, that his son lived.

The reward of the nobleman's faith did not wait for his complete return but was brought by his servants who set out with the good news as soon as they could, which was the next morning, due to the lateness of the hour when the son was healed. Both the nobleman and the servants waited until the next day to begin their journey of sixteen miles, a thing that seems difficult of explanation if this sign was wrought at 1:00 P.M., as the Jews would have reckoned the seventh hour. Thus, in this case, the Roman method of reckoning time was evidently used. As observed earlier, there is no reason to assume that John used either method exclusively.