From what I read, it looks like most people recommend taking your shot first thing AM. I work shift work, doing 3 days, 3 nights, 6 off. on my day shifts I shoot first thing i the AM. Night shifts I shoot right when I get home from work, so it is first thing in the AM, but it is right before I go to bed.
Anybody else in this situation?? Do you change your shot timing on night shift, and shoot it when you wake up in the afternoon instead??