Why have you made more posts at 5 AM, 4 AM and 3 AM than at 7 AM?
Since mostly I don't need to be awake at a particular time, except dinner time and evening gaming, I tend to stay up slightly later each night, until I am up all night. Then I want to be awake during days again, so I try to pull an all-dayer to reset when I'm getting up to the morning. Then, the cycle repeats.
So I spend a lot more time awake in the middle of the night than I do in the morning.