Some believe the world will end with the Mayan `` Long Count '' calendar December 21 . The Mayans used three different types of calendars . 5,125 years - Length of the Mayan `` Long Count '' calendar . One was based on a solar cycle, one on an equinox and another on a lunar cycle. 52 million tourists are expected to visit Mexico during `` Year of the Maya '' in 2012 .
Some believe the world will end with the Mayan `` Long Count '' calendar December 21 . The Mayans used three different types of calendars . One was based on a solar cycle, one on an equinox and another on a lunar cycle. 52 million tourists are expected to visit Mexico during `` Year of the Maya '' in 2012 .