>>14
Of course, relativity. It appears to be slow, but it is only an optical illusion. The issue with "planet so large" is that if you were on said planet, time would be flowing as equally as here on earth. The difference would be, "what is used to distinguish relativity?"
For us, it is our trek in revolving around the sun. One cycle = 24 hours = 1 day.
With "Planet So Large" you'd have to find your contrast in order to distinguish your length of time. But for a human on "Planet So Large" were said conditions favorable for human existence, time would be equilateral to human perception regardless of planetary size...but looking out into space from "Planet So Large" may appear to be constantly in motion where here on Earth we have problems distinguishing motion from looking at the stars...though over time, it is traceable.
Relatively speaking. "Planet So Large" while interesting in fictional propagation has its limitations in pragmatic science especially when "Planet So Large" are extremely rare in possibility if even at all existent in natural occurrence.
:/