Why? If you know you wake up at 3am to get to work at 4am and get out of work at noon, then go to sleep at 7pm and you do this every single day then who cares that it doesn’t line up with some magical other numbers?
You ever run backups every Sunday at 2am UTC? Does that ever confuse you or the computer doing it’s job? If not, the problem you describe doesn’t really exist.
Ever talk to anyone who works shift work? Sleeps all day, works all night for a few days then has a few days off when they switch to daytime wakefulness? What is their concept of today and tomorrow?