Oops, he did it again.

A Christian radio host who predicted the apocalypse would come last Saturday, now says he made a mistake and it will occur on October 21.

California preacher Harold Camping said the Rapture will come five months to the day after May 21, his original prophecy.

The 89-year-old said he felt so bad his prediction didn't come true on Saturday, he sought refuge in a motel with his wife.

Camping made the statement to the press at the Oakland headquarters of his media empire, Family Radio International.

He also predicted the apocalypse would happen in 1994, but blamed the world's survival then on a mathematical error.

Camping had stated there was no way the Rapture would not start on Saturday at 6.p.m, and told the San Francisco Chronicle he was "flabbergasted" his doomsday prophecy didn't come about.

Camping preached some 200 million Christians would be saved and those left behind would die in a series of plagues until Earth was destroyed in a fireball on Oct. 21.

While his latest prediction was mostly met with online ridicule, some believers took it quite seriously. One man in New York spent his life savings on advertisements warning of the coming doom.

Camping's media empire has assets of more than $100 million and had $18 million in donations in 2009.