Analyze how mathematical developments, including the calendar, impacted Mesoamerican culture.

Mesoamerican calendars are the calendrical systems devised and used by the pre-Columbian cultures of Mesoamerica. Besides keeping time, Mesoamerican calendars were also used in religious observances and social rituals, such as for divination.

The existence of Mesoamerican calendars is known as early as ca. 500 BCE, with the essentials already appearing fully defined and functional. These calendars are still used in the Guatemalan highlands, Veracruz, Oaxaca and Chiapas, Mexico.

The importance of aboriginal calendars in ritual and other aspects of Mesoamerican life was noted by many missionary priests, travelers, and colonial administrators, and later by ethnographers who described and recorded the cultures of contemporary Mesoamerican ethnic groups.

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