Warren Jeffs predicted that the world would end by December 23, 2012

Warren Jeffs : religious leader
The president of the Fundamentalist Church of Jesus Christ of Latter-Day Saints predicted from his prison cell that the world would end by December 23
When the end failed to occur as he had predicted on December 23, Jeffs blamed it on his followers "lack of faith", and moved the prediction to December 31.

Bennett-Smith (December 31, 2012). "Warren Jeffs, Polygamist FLDS Cult Leader, May Be Directing Doomsday Plot (VIDEO)". The Huffington Post. Retrieved January 5, 2013.