End of the World Predictions: 1900 CE/AD to Present
This is the chronological list of End of the World predictions. Note that, in the list, if the predictor gave no particular details about how they thought the world would end, I simply listed the Nature of End as "End of the World". I hope that's pretty clear... and now, the list.
Predictions covering 1900 CE/AD through Present (and beyond)
1910 AD, May 10 (or 24): End of the World, predicted by Henry Heinman and the Select Followers
The 1910 appearance of Halley's Comet alarmed some people who felt it was a divine signal of the end of the world. Luckily, Sheriff Hughes of Dewey county, Oklahoma, USA, received word that Henry Heinman and his group, the Select Followers, were worried about this... because he showwed up at their meeting on that day to prevent the blood sacrifice of 16-year-old Jane Warfield. Heinman claimed that he had recieved a revelation from God showwing that a sacrifice was needed to prevent the end of the world. Not surprisingly, Hienman was arrested.
1914 AD: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
1918 AD: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
1919 AD, December: Solar Flares, predicted by Albert Porta
1920 AD: Second Coming, predicted by Colonel J. Garnier
1920 AD, February: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
1925 AD: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
1936 AD: End of the World, unknown predictor
This was based on measurements made of the Pyramids of Giza, with the belief that they hold an encoded future history.
1941 AD: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
1947 AD: End of the World, predicted by John Ballou
1948 AD: Biblical Judgement Day, predicted by the Millerites
1953 AD: End of the World, unknown predictor
1967 AD, July 15: End of the World, predicted by Jim Jones
Reverend Jim Jones, founder and leader of the People's Temple, moved his burgeoning flock to Ukiah, California, around 1964 because he had read in a magazine that it was one of a few places that would be safe from nuclear fallout in the event of a nuclear war... he had predicted such a war was coming on July 15, 1967, so he wanted to be somewhere safe. When the nuclear war didn't arrive, Jones managed to hang on to a sizable amount of his followers; and in 1978, he and the People's Temple became famous for their demise in a massive suicide/slaughter ordered by Jones.
1972 AD: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
1975 AD: Second Coming, predicted by Herbert Armstrong/Worldwide Church of God
1975 AD: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
1977 AD: End of the World, predicted by John Wroe
1980 AD, December 31: End of the World, predicted by Old Arabic astronomical calculation
1982 AD: Astrological Alignment, predicted by John Gribbin & Stephen Plagemann
In 1974, John Gribbin and Stephen Plagemann co-authored a book entitled "The Jupiter Effect," in which they predicted that the Earth would be assaulted by a plague of earthquakes and magnetic storms in 1982 when an alignment of all nine planets on one side of the sun would cause a gravitational stress that would trigger major faults worldwide.
1986 AD: World War III?, predicted by Nostradamus?
1989 AD: Biblical Judgement Day, predicted by Watchtower/Jehovah's Witnesses
In an 1988 issue of Awake! magazine published by Watchtower, which had the question "Are We In The Last Days?" on the cover, an article discussing the long held belief that the end would come within the lifespan of those followers who were alive in 1914 mentioned that 75 years was generally considered a normal lifespan... 1914 + 75 = 1989.
1992 AD: Biblical Judgement Day, predicted by Korean Christian
1994 AD, September: Biblical Judgement Day, predicted by Harold Camping & Family Radio Network
1994, October 2: Biblical Judgement Day, predicted by Harold Camping & Family Radio Network
1995 AD, April 16: Biblical Judgement Day, predicted by Korean Christians
1996 AD: End of the World, unknown predictor
This prediction was mentioned casually in an article about end of the world predictions printed in 1880! This was based on a Biblical idea that the world would end 6,000 years after God created it, coupled with a further idea that the world was created 4004 years before the birth of Christ... leading to the date of 1996 AD.
1999 AD, July: End of the World, predicted by Nostradamus?
Considering that Nostradamus states in his introduction to his famous book Les Propheties (The Prophecies) that his predictions range from 1555 AD to 3797 AD, it would seem odd he'd predict the world would end in 1999. As it turns out, he didn't: but an author named Jean-Charles de Fontbrune in a book published in 1985 used some very questionable mathematical justification, claimed that Nostradamus actually meant "1999" when he wrote "3797."
2000 AD: World War III & Antichrist, predicted by Nostradamus?
2000 AD: World War III & Antichrist, predicted by Mayans?
2000 AD: World War III & Antichrist, predicted by Pyramid of Cheops?
2000 AD: World War III & Antichrist, predicted by Judaism?
2000 AD: World War III & Antichrist, predicted by 'many modern Christians'
2000 AD: World War III & Antichrist, predicted by 'some early Christian church leaders'
The list above is just a small smattering of people that a Biblical end of the world for the year 2000 was attributed to, though none of the authors I've seen actually justify these claims... they simply say 'these guys predicted it' without telling you where, when, or how. To be fair, the year 2000 was a likely date to be predicted as the end because it's the turn of the millenium, and the first turn in 1000 AD was also highly expected to close off the history of all existence.
2000 AD, January 1: Date Error in Computers, predicted by American Mass Media
The idea was that since computers represented years in two digits - i.e. '99' for '1999' - that when the year 2000 rolled around, computers worldwide would mistake the '00' date for the year '1900', and services handled by computers worldwide would be disrupted as computers became convinced they were one-hundred years off the correct date.
2012 AD, December 21: End of the World, predicted by Mayan Calendars?
2100 AD: Environmental Crash, unknown predictor
3797 AD: End of the World, predicted by Nostradamus
In the introduction to Nostradamus' famous collection Les Propheties (The Prophecies), he states that the prophecies within his book cover a range of time from 1555 AD to 3797 AD. Many of his followers have taken this to mean that the world will end in the year 3797, since this is when Nostradamus' prophecies end... but Nostradamus never made such a dire claim about this end date to his prophecies.