Originally Posted by VRPdommy

Your cited explanation is exactly what I stated. Perhaps you do not understand it.
We measure time mechanically to give you some sort of reference but does not represent it.
Your mechanical measurement is external to it's true form that we can not measure.

Einstein only used the speed of light as a reference because no matter where you go in the universe, it is the same. Not that it has anything to do with each other.
Not all light travels at the same speed. Infra-red is slower than ultra violet. But it is the same no matter where you are. But it is only a mechanical reference. How far in how much mechanical time.
You have not done anything to measure time itself. It is not physical. It is without dimension.