'Chichen Itza' Yucatan, Mexico It was built mezoamerikantsami approximately 1050 bc The pyramid was built during the last Mayan period, when Toltecs became politically powerful. The ancient Maya invented a calendar remarkable accuracy and complexity, the pyramid was used as a calendar: four stairways, each with a 91-well level, and a platform on top, making a total of 365-Th "steps", the equivalent number of days in calendar year. " Maya calendar was adopted by other nations mezoamerikantsev, such as the Aztecs and the Toltecs, who, thanks to the perfection and pragmatism described by the Mayan calendar, took his mechanics consistently, but changed only the names of the days of the week and months. Mahou-San Miguel may find this interesting as well. Aztec Calendar Aztec calendar was also the adaptation of the Mayan calendar. It consisted of a 365-day agricultural calendar, as well as a 260-day sacred calendar. Mayan calendar uses three different parallel systems of dating, the Long Count, Tzolkin (divine calendar), and the Haab (civil calendar). Of these, only the Haab has a direct relationship to the length of the year. By Materials:. .