Quick behavior question..

My ball is about 5 months old now and I have noticed that he is extremely active during 2-5pm time of day. During this active time he is climbing the plants on the walls of my glass tank and always is climbing the sides of the tank and looking up at the screen. I don't think he is stargazing and does not seem to have any respiratory issues or any signs of mites. He has been eating normal and is growing great. Is this a behavior I should be concerned about or is it just him being a snake?

Sounds like a snake. :)

The only thing I would check is whether there is a temp spike (2-5pm is the hottest part of the day in AZ, our temperatures are no joke, which is what makes me think of it) during that time which makes him feel like getting out of his hide. Otherwise, I guess you just have a very afternoon-active animal. It's pretty normal for them to "climb" the walls. As long as his husbandry is on point, you're just catching a glimpse of his unique personality.