I'm such an underachiever here, but I have a good excuse.
Marissa falls asleep between 11PM and 3AM. Can't really change it, as her seizure "schedule" is related to her sleep. If she falls asleep on her own, she has a decent day. If we force it in either direction or try to, the next day is terrible.
The brother on the other hand- 8:30 to midnight, 1AM to 7AM, 8AM to 11AM. Maybe a nap in the afternoon. You can set your watch to it.
Spring, summer, winter or fall. It matters not.