I think that might have to do with your body clock and schedule. As you said, those are your "regular" sleeping times. If you start to consistently go to bed at

I think that might have to do with your body clock and schedule. As you said, those are your "regular" sleeping times. If you start to consistently go to bed at 10pm and make that "regular", you'll get the same quality of sleep as with your current schedule. But, ultimately, if 1am to 9am works for you and there are no major negative effects to your life, I wouldn't think there is anything wrong with continuing to keep that schedule.