In our evolving universe, spac eexpands due to dark energy, causing regions with lower mass density to experience faster time progression than dense areas. Extrapolating this the lowering of mass density by expansion will speed up time in our evolving universe. This expansion causes regions with lower mass density to experience a faster progression of time compared to denser areas.
If expansion adds space, and time is just the process of accumulating space, then the rate of expansion directly determines the rate of time flow.
Of course we would not notice: 1 second would still be 1 second
If expansion adds space, and time is just the process of accumulating space, then the rate of expansion directly determines the rate of time flow.
Of course we would not notice: 1 second would still be 1 second