The nemesis and polar opposite of spaceman, and a known gatorade fiend. Writes in barely comprehensible ebonics.

May in fact be spaceman himself, or merely a clone gone bad.
Fighter of the NightDarker man
Champion of the sun
You’re a master of weird posts and snowmen…for everyone
by FuzzyBB July 25, 2009
An 31337 h4x0r f0cuzd 0n d0m1n4710n.
"NightDarker is about to own me."
by Bill Howard October 14, 2003
It’s the opposite of daylight. Often used as a joke.
Aye Earl, what time you going to the house?

Earl: I don’t know probably before it’s nightdark.
by Parkside February 9, 2019
opposite of daylight, similar to nightfall, nightime
Its best to wait for nightdark to stargaze.
by Brent Richardson January 2, 2006