No, not the video game…
To jump right into the fray, and start a proposal by saying our math is inaccurate (maybe not inaccurate, but overly complicated). There are only a binary (adichotomy) of numbers you will ever need to know about, 0 and 1. In typical fashion, i’ll tell you this, the “speed of light” is actually the speed limit of space travel, however, that speed is instant (immeasurable) and the “speed of space” is null (a measure of no movement 0). So the speed in which we travel (above space/time) is .892 (using kilometers, since miles are stupidly complicated) or in binary .1101111100. It actually doesn’t matter where the source of light is, relative to the observed, since the observer is the only one affected by the perception of the speed of time.
a visual:

Our speed is actually .892 (as point of reference, relative to 0) + speed light measure .108 = 1
There’s no need to define per hour/minute/second (this just so happens to be km), but you could calculate it out i suppose. Although our measure of hours is pretty arbitrary, we could have just used 20 (or 10 hours) in a day and split down from there, but yanno, we were left with everything to sort out as a guidebook. The decimal only represents a number less than 1, but you can add 0’s if you wanted.
Lastly, a black hole is likely as slow as you can get to 0, without actually being 0.
Might be too simple, but probably not.