A perigee full moon, or supermoon, is seen during a total lunar eclipse on Sept. 27, 2015, in Washington. Getty Images

An online Christian organization based in Philadelphia warned the world will end Wednesday, the Guardian reported. The apocalyptic prediction comes just one week after the blood moon had people forecasting the end was near.

The eBible Fellowship previously predicted the end of the world would be May 21, 2011, but is now certain civilization will be wiped out by fire Wednesday. The fellowship is not a religion, but an online organization that holds meetings once a month.

“According to what the Bible is presenting it does appear that Oct. 7 will be the day that God has spoken of, in which the world will pass away,” said Chris McCann, the leader and founder of the fellowship, the Guardian reported. “It’ll be gone forever. Annihilated.”

Participants in a movement proselytizing the world will end, Judgment Day, walk through the streets May 13, 2011, in New York City. Getty Images

The fellowship’s prediction is based on claims made by Christian radio host Harold Camping, who made headlines in 2011 after he told listeners of his radio station in California the world would end on May 21, 2001, the Daily Mail reported. When May 21 came and went without any event, McCann changed his prediction to a day in October 2011. Once again, doomsday never came. However, McCann claimed Camping’s original prediction of May 21, 2011, was correct as God’s “judgment day,” rather than doomsday. McCann's belief is that God had given himself exactly 1,600 days from that date in May 2011 to decide which nonchurchgoers would be saved from end of the world, resulting in a new doomsday date of Oct. 7, 2015. McCann came up with the 1,600-day time period based on a mathematical formula derived by Bible verses and Camping's estimate of when Noah's flood occurred.

Wednesday’s predicted doomsday comes little more than a week after the blood moon spurred several apocalyptic predictions. Certain religious leaders had said the blood moon could trigger a chain of events that could result in the apocalypse in as little as seven years. The blood moon, which was a lunar eclipse combined with a “super moon,” occurred uneventfully on Sept. 27.

There are several theories from scientists about when the world might end, with the most accepted theory being that the sun is gradually increasing in temperature and will expand and swallow the planet, which some believe could happen in as little as 7.6 billion years. However, none of those theories results in an Oct. 7 doomsday date.