The old mayan calender is probably the oldest and most accurate and ended on 21st December 2012. It was falsly covered as the end of the world by mainstream media, probably coming from an New Agers interpretation of the end of the calender as the end of a bad age and the beginning of a new golden age, seeing it falling together with other end time prophecies (Age of Aquarius, Nostradamus, Great cleansing of the Hopi, Hindu new Shiva Yuga, etc.), which some New Agers, comparing it to the literal interpretation of John’s Revelation, saw it coming with a catastrophe of some kind, though armageddon also just means Change, and leaves the means of change to spiritual interpretations of the sacred scriptures.