time is a measurement....not a force or a substance.
only the calculation shows the effect of motion to gravity to space.
like the measure of a foot.....was made up
a mile....made up
par sec....an approximation
seconds, minutes, years, eons, .......
all man made ideas.
Sure, man have given different labels to measurement of time.
Does it really matter if it was man-made or not?
The word "bible" is man-made, for the collection of text. Man, particularly Christians, have divided the bible as Old Testament and New Testament. Who else would label the book or sections of books with such.
According to Genesis 2, Adam named all the different types of animals and birds, but the Genesis wasn't written until the Iron Age. You could name these animals with different names, and that happened in any case, because of different languages being spoken, all of which are man-made labels.
Did your God name these divisions of time? I don't think your God exist, to give any label.
You are splitting hair because of time are given man-made labels with man-made measurement.
And you are wrong. Time may not have substance, but in physics, the measurement of force (unit N) is that mass of the substance, multiply by acceleration...
...and acceleration is rate of change (distance divided by time squared) in velocity (distance divided by time), so force is indirectly related to time.
Though time may not have substance, it is essential requirement in physics, especially with many different calculation and equations. Without time, you would still be back at stone age or dark age, where education is severely limited by ignorance.