I live by a "night owl" rhythm, but my feeling is that the real reason behind it is that my sleep cycle has just never been really adjusted to the 24 hours days

I live by a "night owl" rhythm, but my feeling is that the real reason behind it is that my sleep cycle has just never been really adjusted to the 24 hours days. For me a perfect day would be somewhere between 28 and 32 hours, and then a good 9h sleep.