(An American evangelical from the religious group Family Radio displays a doomsday placard on the streets in Manila May 13, 2011/Romeo Ranoco)

The U.S. evangelical Christian broadcaster predicting that Judgment Day will come on Saturday says he expects to stay close to a TV or radio to monitor the unfolding apocalypse. Harold Camping, 89, previously made a failed prediction that Jesus Christ would return to Earth in 1994.

The head of the Christian radio network Family Stations Inc says that he is sure an earthquake will shake the Earth on May 21, sweeping true believers to heaven and leaving others behind to be engulfed in the world’s destruction over a few months.

“We know without any shadow of a doubt it is going to happen,” Camping told Reuters. His Family Radio has 66 U.S. stations and broadcasts in more than 30 languages through international affiliates. His supporters have posted about 2,200 billboards around the United States about the coming apocalypse, and dozens of followers have driven across the country to spread the news.

(An advertisement is seen in a New York City subway for Judgment Day at Times Square in New York May 13, 2011/Shannon Stapleton)