I don’t really know how to describe it. I guess I have no sense of how long I was asleep until I see how dark it is (which is my immediate reaction when waking up) then I usually I have a decent guess. Although there are times I wake up and I have no idea if it’s 2 or 6 am.

Are you able to more accurately guess the time when you wake up based on the contents of your dreams? The rare occurrences when I dream if it’s over “10 minutes” there’s no difference in my perception if it’s that or hours.