This description provides an overview of the Mayan calendar, an ancient system of timekeeping used by the Maya civilization of Mesoamerica. The calendar consists of three separate calendars, each with its own cycle of days and months. It is believed to have been developed around the 5th
From Wikipedia
The Maya calendar is a system of calendars used in pre-Columbian Mesoamerica and in many modern communities in the Guatemalan highlands, Veracruz, Oaxaca and Chiapas, Mexico.