Bro, it's all vibes.
Models get dumber during the day and smarter during the night, I swear.
but I'm not willing to scientifically verify this, so I'm just going to go off of vibes- just like everyone seems to be doing with projects.
In my case it that I'm tired and more likely to miss issues or mistakes. My idea of good enough is at a much lower level when it's 10pm and I'm about to knock off and go to bed in an hour.
These vibes are pretty obvious even with casual use. Weekends are so much better.