Mayan astrology is a variation of Mesoamerican astrology, one of the most forward-thinking kinds of astrology of its time. The Mayan Calendar, or Tzolk'in, is comprised of 20 Day Signs and 13 Galactic Numbers, making a 260-day calendar "year." Every day in the Mayan calendar is marked by one of the 20 Day Signs, which reveals your personality and life purpose. Which one is yours?