You might remember Edgar Whisenant. He wrote a best-selling book called 88 Reasons Why the Rapture Will Be in 1988—and a much less popular sequel, The Final Shout: Rapture Report 1989. The second book said Jesus didn't come back in 1988 because the author, who was a former NASA engineer (!), missed his mathematical calculations by a year.
The mood of the 1980s was uneasy. After Ronald Reagan was elected president, some Christians began to surmise that Soviet leader Leonid Brezhnev was the Antichrist. When he died they gave the title to the next Soviet leader, Yury Andropov, and then to his successor, Konstantin Chernenko. When Chernenko died unexpectedly, people were certain that Mikhail Gorbachev was the Antichrist because he had that awful red birthmark on his forehead.