

Amusing thought, but doesn’t really make sense biologically. Your body doesn’t know your geographical location. It just reads the environmental time using a bunch of different inputs and guesses at what the actual time is. Your body is actually fairly good at guessing the time, but people are just naturally predisposed to sleep later or earlier.
That tendency is influenced by genetics and also changes over time with age, but I also heavily suspect that people are actually just messing up their circadian clocks without knowing it. Try dimming your lights after sunset, you’d be surprised by how early you get tired.
Eating is also a really big factor for the body’s circadian clock. Not sure what your lifestyle is like, but I would try to avoid eating anything when it’s late.
Interestingly enough, autism is also noted to affect the circadian clock, so it seems like medical and psychological conditions can exert an influence too.
And it could be entirely possible that you are simply a night owl. I just find it disingenuous that some people would use the circadian clock as a way to justify poor sleep habits, especially if they have habits that disrupt their circadian clock. It kind of dilutes the struggles of actual night owls