Witching Hour During the Day?

The past three days my LO has been extremely inconsolable during the day. From about mid morning to evening. At night he does fine (knock on wood). He's currently 1 week and 5 days old. I try EVERYTHING and he will not settle for anything. It's like he'll get quiet and try to nap and then cries. It's a never ending cycle. The only thing that seems to work is a car ride. Is witching hour possible during the day? Anyone else experience this or have any advice?