Is there an "ultimate slowness" in the universe? The fastest you can go is .9999c and if you were to do so time would pass more slowly for you vs the rest of the universe.

So it seems that there is a "fastest" way to go through time. And that is by being perfectly still right now we are not still we are on a rotating planet going 900mph and orbiting the sun at thousands of miles per hour. So time is moving slightly slower for us than it would be if we were not moving at those velocities.

if you made a space ship and flew it many directions and speeds there is a direction where the rate of time passing would speed up relative to earth by the difference of our current total velocity.

if it went in the right direction and speed it would find a vector that caused time to go faster for it than anything in the universe that is made of matter and moving at any velocity in any direction compared to our spaceship which is now going as fast as possible through time but not moving in space at all.