I basically flipped my schedule when I worked nights. Went to bed at 9 or 10 am and woke up at 4 or 5 pm. I struggled on Wednesday when I wanted to stay "up late" until noon or 2pm and would then sleep until 10 pm.
Much happier back on days with a regular schedule. Though I do miss grocery shopping at 6am or getting to the trail at the crack of dawn since I was already up.
When I was 12 or 13 I'd walk into town to check out the used cd stores all the time. Seems pretty normal.