Sorry, but what has local time to do with it? Most of my trips I can't stay out till 3am, because I don't get to the hotel till 6am. Last trip I landed at 3am, there was a 24hr bar next door, so I had breakfast with a few drinks till 5am. Slept till 3pm, went for a 7mile run, had lunner, and went back to work at 10pm. Hopefully you don't think there's anything wrong with that.