The California evangelical broadcaster predicting 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.But the head of the Christian radio network Family Stations Inc says 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.Like his last prediction, Camping's doomsday date is based on his reading of the Bible and a timeline dating back to ancient events including the Biblical flood survived by Noah.Camping's pronouncement of a specific date for the apocalypse puts him outside the Christian mainstream.Source: Reuters