My light is setup on a timer and comes on at 6am and turns off at 6pm. He does come out around 9-ish for a short time then comes out around midnite for a bit longer. I think it might have been the temps. I moved one of the heat lights so that both are on the hot side. I'm still fiddling with things trying to get temps/humidity just right. I started a log today for that purpose.