There were actually many, many more doomsday predictions than those listed...but anyway...
I thought Whisenant's predictions for 1988-89 were right on the mark, according to the end of the Hindu Kali-Yuga. Samael Aun Weor and Nostradamus also predicted that time frame. Even the Watchtower had a chance to be real prophets, had we chosen not to cancel Armageddon. But that's what we did, with the Harmonic Convergence of August 1987. The Iron Curtain fell soon after. Yes, WE DID THAT. Sorry, but we're not nuking the world this time, we've had enough.
For you curious ones, google "Tiamat" (the planet). It's now the Asteroid Belt.