The better question here is: why do YOU think it is a time machine?
It takes you places that are of ahead of you.
is it a delorian ? like on back to the future
did you experience any weird auras of light or blurry obstacles outside as you were traveling from place to place , just kidding , sounds like a clock adjustment is necessary
i had a similar experience getting to work to early one winter day and the wind was relentless the person who had the keys was like 45 minutes late and i was freezing in a thin jacket , took the bus to get there me that is
i usually miss that time adjustment and find out later
it was up late last night watching back to the future.