This is the same calendar used by the pre-Columbian cultures of Mesoamerica. dating back to 5th century bce. Made of hydro-stone plaster the calendar and can be made to hang on the wall. According to beliefs, there have been a total of five suns, including the current one. According to legend, the previous four, together with humans, were destroyed by the gods’ wrath. The calendar represents the fifth sun and tells the story of the past four and marks the changing of the seasons. The Aztecs or “Mexica,” believed the sun struggled daily against the forces of darkness.