No one is expecting him to be awake at four in the morning. No one, in fact, is expecting him to be awake before around seven in the morning, it appears. The dorms' silence is only broken by the soft snores, and the common room doesn't have even that.
Pottervor
meta_muggle
"Sounds reasonable. I should—perhaps rethink my approach with the other Slytherins."
meta_muggle
"Well you know clearly my first idea on how to solve things isn't necessarily the best one so I should probably think more before I act."
meta_muggle
So Dayo returns to the Slytherin common room to continue working on his plans for world domination. Or, you know, something.
great-things
"I'd like to know if there is a - a code of conduct for teachers at Hogwarts, please," he says.