Harold Camping has predicted the world will end this Friday, October 21.

Camping, a Christian radio evangelist who predicted the world would end on May 21 earlier this year, now says his first doomsday prediction was off by five months.

The May date, Camping claims, was Judgement Day when God chose who would be saved from the Apocalypse. The past five months have been a waiting period before the Rapture this Friday.

“We can be sure that the whole world, with the exception of those who are presently saved (the elect), are under the judgement of God, and will be annihilated together with the whole physical world on October 21, 2011,” Camping wrote on his Family Radio blog.

“On that day the true believers (the elect) will be raptured. We must remember that only God knows who His elect are that He saved prior to May 21.”

Camping has used the recorded more than 10,000 earthquakes that occurred on May 21 as evidence that his Judgement Day prediction was correct.

Geologists confirm the number of earthquakes on that day, but point out that several million earthquakes occur each year.

Camping, his Family Radio, and his followers spent millions of dollars publicising his prediction in May. Suspiciously, they will not do the same for his October prediction.

Camping, 90, suffered a stroke soon after his May Judgement Day and has been bedridden in his California home ever since.