John Major Jenkins

 John Major Jenkins (born 1964) is an American author and independent researcher, best known for his works that theorize certain astronomical and esoteric connections of the calendar systems used by the Maya civilization of pre-Columbian Mesoamerica. His writings are particularly associated with 2012 millenarianism and the development of Mayanism in contemporary and popular culture, as an outgrowth from the New Age milieu. He is one of the principal people who have promoted the idea that the ancient Maya calendar ends on 21 December 2012 and this portends major changes for the Earth. Although his controversial views conflict with mainstream science, Jenkins is considered one of the most lucid 2012 authors, with a solid knowledge of the ancient Maya.