Once you work in the film or theater it becomes a way of life. I remember having an early visit one morning and the guy asking me if I was making an early start, or just left over from the previous night. LOL.
there are only two things that make time of day significant: being out in the woods by yourself, or having appointments to keep, and even that, only being out in the woods by yourself makes the position of the sun in the sky more important. whatever your time of serving/being accessible to, everyone else, the rest of you internal clock schedule can be adjusted to comfortably meet. amount of time awake and asleep is the more pertinent matter. enough hours of sleep for not exceeding to many continuous hours of being awake. those are what count. unless you have somewhere to be, at some particular time, those little numbers on the clock can go hang themselves. that does NOT mean, there is any hour of any day, to be inconsiderate of anyone though.
I use to love nightshift work. I worked clubs, pubs, sports bars, strip club all at night. My fav. shift was 11pm - 7am. I'd be on a quiet road home while the other side is filled with honkers trying to get to work on time. The shops were open, the bank was open, I could do anything! Meanwhile these poor saps be stuck at work all day, I'd be up in the alps watching the little cars look like ants, rounding the mountains. Sometimes I wonder who's in the car, their purpose their journey.. see you can do that shit when you work nights. Also bar work was a social outing, so I got all my social stuff out of the system by weeks end, then by weekend... I don't wanna see people lol, so you get much more free time.
In the Royal Canadian Navy, yonks ago, we used to stand 3 days, 3 evenings and 3 nights and then three days off (radio watches - listening to radio traffic from certain maritime targets) - on breaks, on nights,walked outside into the crystal cold - floodlights illuminating our extensive antenna farm which covered several acres - by dawn the big blues would be starting to twitch a bit - but, we were keeping the world safe from (some political system I forget the name of)
Last time I stayed up all night was probably like a party in college or something. But then I slept all the next day.