Weird sleep schedule

Okay, so as the title says I got a weird sleep schedule.
When I go to sleep at 23:00, I wake up at 7:30 or 8:00. When I go to sleep at 3:00 am, I wake up at 8:00 or 9:00 but I sleep a lot in the afternoon. Seriously sometimes I don't even understand myself...

I wrote that because last night I got in bed at 3:00 and woke up at 8:10 but slept again from like 10:20 to 13:30 rather than sleeping from 3:00 to 10:00 for example. Maybe that happens because when I go to bed early, I wake up a lot in the night so by going to sleep at 3 it's kinda obvious for me that I wake up at 8 then go to sleep again at 10.

I've never had a normal sleep schedule anyway because me and normality just don't work together. And that's not only when sleeping.