I know this will sound weird, but when I overuse my muscles (I have muscle troubles) I get anxious a few hours later, so that does happen in the evening. I swear I think there is some sort of chemical thing. I am not depressed or anxious in my life now, but I still observe this phenomenon when I push myself. It makes me wonder if part of my anxiety when I was working retail was actually the beginning stages of my muscle troubles since I was on my feet doing very physical work hours a day.
When I had a very traumatic event years ago early morning was the worst. I woke up early with dry heaves and a horrible feeling of dread. My anxiety level was through the roof. I woud sometimes shake for no reason. Cry at random times. It was all bad 24 hours a day, but definitely morning was the worst. The anxiety was crippling. The physical manifestations of the anxiety were much much more troubling to me than depression ever was.
When I was depressed in my teen years I dragged all day, but school and work I was able to pull it together and function normally. Actually, work is what brought me out of my depression. Interacting with new people and being very successful at my job really helped.