John Major Jenkins

John Major Jenkins (4 March 1964 – 2 July 2017) was an American author and pseudoscientific researcher. He is 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 figures who have promoted the idea that the ancient Maya calendar ends on 21 December 2012 and that this portended major changes for the Earth. He has self-published a number of books through his Four Ahau Press.

He died on 2 July 2017 from cancer of the kidney at the age of 53. Provided by Wikipedia