4:30 p.m. to 1:30 a.m. here. I’ve been doing it for the last three years or so.
Good points:
I’m totally unsupervised; I sit in an office completely by myself with an Internet-connected computer and a TV with cable, and I can listen to music, burn CDs, browse SDMB, whatever I want as long as my work gets done professionally (which it always is).
I sleep from about 4 a.m. until “whenever I feel like getting up,” usually about noon; I never, ever have to set my alarm for work.
Those midday errands that used to be a total hassle and use up my lunch hour (e.g., get a haircut, go to the bank, go to the post office) are now no big deal, and I rarely have to deal with long lines anywhere.
The incredibly cool gal I’m seeing these days manages a used bookstore/coffeeshop, so when I get up I truck over there and see her for a while before I go in to work. (Free coffee doesn’t hurt either.)
Also, if I’m gone for more than a couple days, like on vacation or a business trip, everybody else in the office gets really, really sick of covering my late shifts and they’re all extraordinarily happy to see me return. Last time I came back after being gone for a week, my coworker’s wife called me up to personally tell me how glad she was that I was back, since she’d hardly seen her fella while I was gone.
Bad points:
It puts a major crimp in the social life of a single 32-year-old, especially since I work both Friday and Saturday nights (my “weekend” is Sunday and Monday).
And on the rare occasions when I do have to get up early for something, it’s completely awful. A dentist’s appointment at 10 a.m. is no big deal to daysiders, but to me that’s about like having to visit the dentist at 4 a.m., when you’re supposed to be in deepest sleep. I try not to schedule anything before noon.