I'm talking about like... in general, not this site specific. It's kind of like an expansion on the whole " are you a morning or night person." I'm also not asking specific hours, just general.
Like I'm a very nocturnal person. On days off, I'm up early afternoon and, as it isn't hard to tell, don't go to sleep until very late. People sometimes get pretty upset or worried about me because of it but I'm definitely not sleep deprived. On days I have classes, I have to follow a schedule, so I have to adjust from weekends and such. It isn't very hard. If I do stay up too late, I'll often take naps in between and after classes. I have a couple hour long breaks between my classes, so it's not an issue.
Thought I'd tack on that I live in central US. I guess I wouldn't be up too "late" if you live in some other countries.