I used to work a shift that was 7pm-7am Thursday and Friday, then 11pm-7am Saturday and Sunday. I miss night shift.

When I switched from that job to one that was (IIRC) 7am to 5pm Monday to Thursday, it was a challenging week.

edit: actually I think it was 6am to 4pm. I don't exactly remember how the change went. I just remember developing a dependency on energy drinks and apologizing to my mentor for being sleepy.