A bay area minister has calculated the day of the rapture, and it's May 21 of this year. http://articles.sfgate.com/2010-01-01/bay-area/17466332_1_east-bay-bay-a...
Rev Harold Camping already has a bad track record,
having assembled his flock for the end of the world in 1994, an event that even his followers noticed did not occur. He claims he now has a better system that corrects the calculation that led to the previous erroneous date.
Camper's current prediction is based on his reading of the Bible and his association of specific numbers (5, 10 and 17) with themes of atonement, "completeness" and heaven. Then he calculates the years from Jesus's crucifiction (April 1, 33 AD) to the current year, multiplies these years by the number of days in a solar year (not a calendar year), adds the 51 days between April 1 and May 21, and arrives at 722,500 days. This is the same as the product of his biblical numbers 5, 10 and 17 multiplied together and squared: 722,500.
This is not to say that Rev.Camping is deliberately faking his data: we wouldn't know that. It is perfectly reasonable to assume that he is truly convinced (yet again) that he has properly calculated the end of the Earth. But he and his followers should know that there is a long tradition of such predictions being wrong.
Every one of them.
Anyone care for a Skeptics in the Pub on May 22?