Some believe the world will end with the Mayan ` ` Long Count '' calendar December 20 . The Maya used three different types of calendars . More than 5000 people believe ` ` end of the world '' terms on December 20 . 200 - 300 - Calls per week NASA has been receiving recently from people asking if the world really is about to end . 52 million people are expected to visit Mexico during ` ` Year of the Maya '' in December .
Some believe the world will end with the Mayan ` ` Long Count '' calendar December 20 . The Maya used three different types of calendars . More than 5000 people believe ` ` end of the world '' terms on December 20 . 52 million people are expected to visit Mexico during ` ` Year of the Maya '' in December .