User blog comment:DMUA/Dude who doesn't even have a name yet goes REALLY REALLY FAST (But nowhere near Akerious)/@comment-25603146-20180512164353

...as I had mentioned in the other calc, for instants like these where the timeframe is "instant" relative to human perception, a safer high-end would be 1 frame (1/30th a second) and a safer low-end would be 1/10th a second.

I guess I'll try my hand...

So, the observable universe is 93 billion light years (or 8.8e+26 meters) as per [|the Wikipedia page], then multiply by *365.25 to get the days, then *24 to get the hours, *60 to get the minutes, *60 to get the seconds... *10 from there to get one-tenth a second, or *30 (3*10) to get 1 "frame" for a high-end.

Low-End: 2.9349e+19 C, or 29.35 Quintillion FTL.

High-End: 8.8046e+19 C, or 88.05 Quintillion FTL.