John,
You can use our perceptions of "entrophy", "causuality", "relativity", "distance" as indicaters that a thing called "time" may exist.
I elaborate to wit--
Relativly hot things become cool. (entrophy) A person must be born before it dies. (Causuality+entrophy) A beam of light (OK electromagnetic radiation

) will travel a distance wilst the person lives.
A distance may be determined through angular (geometric) calculations or measurements.
If our perceptions were not reasonably accurate then we probably wouldn't be here.
If our perceptions of EMR, for instance, were not accurate we would die of heat exposure (sunburn or freezing) We could not survive those extremes therefore our perception must be accurate enough to ensure our survival.
If our perceptions of distance were not accurate then you would be seriously disadvantaged in eating, catching game, and avoiding danger.
If our perceptions of entrophy were inaccurate then we would have never have sought a comfortable (benign) place to live or sleep.
If our perceptions of causuality were inaccurate we would attempt to pick fruit in the spring, eat dates before a date palm grew and so on.
Basically I aver that since we exist then our perceptions also have a high degree of probability (or accuracy). The converse would be be that any self replicating organism that is not suited for its environment will not replicate. This seems to hold true for all "self replicating" (living) organisms.
Since an interval exists between hot-cold, begin-end, start-stop,-live-die, then I think it reasonable to name this interval.
For convenience we call it "time". For more precision we can call it space-time.
So my belief is that there is something that can be called "time". It probably exists, although what is a common perception of time as a universal clock probably does not exist.
So can you agree that there is probably something called "time" that does exist in some form or another