You guys have some awesome posts and insights.
Let me direct to you one of the most well known physicists in our day n age - Albert Einstien. He struggled over the concept of time (mainly due to
his experiments with the speed of light) and IMO he has come the closest to nailing it.
The answer lies in the Theories of General and Special relativity. Atleast the best answer I've seen so far. Goto wikipedia and read it to get an
idea. The gist of it is - that yes as has been stated before - TIME is a measurement by man. It is however, a direct result of the frame of reference
in our current space/time position.
This is to say, because of our location in the solar system / galaxy / universe (IE, frame of reference) we measure time RELATIVE to that frame of
reference. Change the frame of reference, and time changes.
Time is only relative to the frame of reference that your currently in.
I tend to agree with this, taking into account that variables that we use to measure time here, such as the rotation of the earth, its position in the
galaxy, the rise and fall of the sun and even atomic vibrations (which can be effected by gravity fields and other electromagnetic variances). All
these things go into us measuring time local to our frame. Change the frame, change the way we measure time.
What does this tell us about time? Well, I don't know. But I can tell you with a sincerely belief that this is probably the only unique place in the
entire Universe that time flows the way it does. Time to go explore the rest of the Universe aye'