BoGoWo wrote: in my understanding of reality 'time' is not a 'thing', it is merely a description of relationships between things - stars, atoms, eras, what have you.......
[time is a measuring stick, no more, no less.]
It's undoubtedly closely related to the perceptions of sentient creatures of our dimension.
(aside: Kurt Vonnegut's Tralfamadorians perceived humans as millipedes because they could see a human's entire life as a
trail of movements and actions.)
Yes, Time is a measuring stick but also may be
a fundamental property of existance. It think H G Wells theorized in "The Time Machine" that Time was a distinct dimension: something like, "...a thing must have length, width, height and
duration in order to exist."
So just as length may describe a unit on a measuring stick, it is also a basic property of existance.
...and time; a measurement but a property as well.