Harold Egbert Camping (July 19, 1921 – December 15, 2013) was an American Christian radio broadcaster, author and evangelist.

He first predicted that the Judgment Day would occur on or about September 6, 1994. When it failed to occur, he revised the date to September 29 and then to October 2.

In 2005, Camping predicted the Second Coming of Christ in May 21, 2011. Those saved would be taken up to heaven in the rapture, and that "there would follow five months of fire, brimstone and plagues on Earth, with millions of people dying each day, culminating on October 21, 2011, with the final destruction of the world."

Source: Wikipedia

Judgement Day on 21 May 2011 - Harold Camping, 2011

After May 21 passed without the predicted events, Camping said he believed that a "spiritual" judgment had occurred on that date, and that the physical Rapture would occur on October 21, 2011, simultaneously with the final destruction of the universe by God. Except for one press appearance on May 23, 2011, Camping largely avoided press interviews after May 21, particularly after he suffered a stroke in June 2011. After October 21, 2011 passed without the predicted apocalypse, the mainstream media labelled Camping a false prophet and commented that his ministry would collapse after the "failed 'Doomsday' prediction".

Camping was reported to have retired from his position at Family Radio on October 16, 2011, only days before his final prediction for the end of the world. However, his daughter later clarified that he had not retired outright, but was maintaining a role at Family Radio while working from home. Camping admitted in a private interview that he no longer believed that anybody could know the time of the Rapture or the end of the world, in stark contrast to his previously staunch position on the subject. In March 2012, he stated that his attempt to predict a date was "sinful", and that his critics had been right in emphasizing the words of Matthew 24:36: "of that day and hour knoweth no man". He added that he was now searching the Bible "even more fervently...not to find dates, but to be more faithful in [his] understanding".

After the failure of his prophecies, Family Radio suffered a significant loss of assets, staff and revenue. Camping died on December 15, 2013 after complications sustained from a fall in his home two weeks earlier.