I found my hatchling Greek Comet is an early riser. She is up about 3 or 4 in the morning. Cruises around her habitat, warms herself and waits for breakfast about 6 am. She eats naps and then in the early afternoon about 1 or so she is up again. She beds down about 3:30pm. I would have missed her up so early if I hadn't had a few sleepless nights. So now I know she is really up more than I think the little stinker.
Maybe yours are doing something similar?