Spent most of my adult life working some kind of night shift & sleeping when the good people of the world were working...I'm a bit of a night owl when left to my own devices anyway, so adapting to the sleep schedule was never a prob...except that lots of people assumed I shouldn't be sleeping during the day, & called me to get my lazy ass out of the bed...I usually thanked them by calling their ancestery into question...
BTW, Irish, you are right about 2nd shift suckage, kept me out of lots of evening activities, including the kinda stuff that involved my kids...& the cops assume that if you're out driving at 2 am you must have been drinking...

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