I get up and go to bed at all different times of the day/night..seem to have lost my internal clock about 10 years ago.

Retired, so nobody is expecting me to be anywhere. When I go to bed I usually sleep a minimum of 10 hrs, and sometimes as long as 15. Of course, at my age I'm up every 2-3 hrs. to drain the tank.

In other words, I get up and go to bed when I damn well feel like it.