World War III broke out on November 22, 1987.
Only episode in the entire second season that the spaceship Searcher and Buck Rogers return to Earth.
In this episode, we learn that the only man-made structures still standing after the nuclear holocaust were the Pyramids of Egypt, the Aztec ruins of Mexico and Mount Rushmore.
William Sylvester played Dr. Heywood Floyd in 2001: A Space Odyssey (1968). Further, the Searcher bears a strong resemblance to the Discovery.
This episode takes place in December 1986, in January 1987, on November 22, 1987 and in 2493.