I briefly worked at a company which started at 6am(which meant getting up around 5am). We had "lunch" at 9:30 for 15 minutes, and would finish work at 2pm. I'd be home by 3pm, have dinner at 4pm and be in bed by ~8pm. Weirdly enough, most employees liked that schedule because it meant they were finishing work roughly the same time their kids were finishing school.
This schedule is quite common in more industrial/medical areas. Even if you are not directly working in factory settings you might be required to punch in at 6am, quite a lot of my friend working in automation/aerospace engineering have to be in office at this time. My exgf really like this schedule as she can have most of the day for herself and still be able to do a lot of things outside of her work.
Yeah, there's a factory right near me and shift change is somewhere around 2-2:30 from what I can tell, which I base around movement of people I observe.
