My records show we kill more deer in the evenings.....but we historically hunt more then as well. We used to hunt a lot after work in the early season.
This may or may not make sense or even be true so bear with me. I like to hunt mornings in the early season.....I think the deer move with the cooler night temps and morning temps.....as the day heats up the deer activity drops and even the evening temps are not cool enough. In the middle of the season I hunt all day as much as I can......you just never know what is going to happen. I'll sit thru the heat of the day in the hope of a cruising buck passing thru. I have had some odd things happen at times when I thought the deer wouldn't be moving in the rut.....and they involve nice bucks. Later in the season I focus on late morning and into the evening - I see more deer as the temps rise in the afternoon and into the evening. It seems I see the best activity when the temp is 30 to 50 degrees roughly.
I figure if it was me out there in my heavy hunting coat when would I want to move. When it's hot, I'll move when it's the coolest. When it's cold, I'll move when it's the warmest......and when it's time to get some.....well, anytime is a good time!