NO! NO!
Dark Planet was created in 2007.
The Umbra is completely dark. Partially Dark is Penumbra.
The planet with a great dark spot that disappeared in 1994 was Neptune. The dark spot was a massive storm system in Neptune's atmosphere, similar to Jupiter's Great Red Spot. It was first observed by the Voyager 2 spacecraft in 1989 and had completely disappeared by 1994.
pluto.
Not unless you have a definition of "completely dark" that means something other than completely dark (i.e. no light whatsoever).
Dark Planet - 1998 was released on: USA: September 1998
When the moon appears completely dark it is called a new moon.
You can go to the dried-up dark lake on Fons or in Malik.
Planet Neptune
Dark Planet - 1982 VG was released on: USA: October 1982
Saturn is the planet that will answer your question
''Neptune'' is the planet with the The Great Dark Spot. But sometimes it can disappear so watch out for that.