Great question! I think time is relative to the observer. Time is meaningless if it's not observed, therefore, sleeping, or dead, time does not exist.
No. as evident that you wake up without the alarm clock on your day off!!...lol
No there is still a sense of time although different to when awake
Your perception of just about everything ceases to exist when you sleep. No, time is not a perception. It can be relative. But relative and perception are not the same thing.
no we have a sub concious body clock,,,,,
Yes it is.
i like all your questions lol