Mesoamerican Long Count calendar Mesoamerican Long Count calendar The Mesoamerican Long Count calendar is a non-repeating, vigesimal (base-20) and base-18 calendar used by several pre-Columbian Mesoamerican cultures, most notably the Maya. For this reason, it is often known as the Maya (or Mayan) Long Count calendar. Using a modified vigesimal tally, the Long Count calendar identifies a day by counting the number of days passed since a mythical creation date that corresponds to August 11, 3114 BCE in the Proleptic Gregorian calendar. The Long Count calendar was widely used on monuments. The two most widely used calendars in pre-Columbian Mesoamerica, were the 260-day Tzolk'in
Mesoamerican cosmovision and adherence to calendar systems. Mesoamericans did not understand human sacrifice as a malicious act, but rather sacrifices were carried out in an effort to renew and center their world, as well as pay debts to the gods. Mesoamericans carried out ritual sacrifice in order to balance, center, and renew their cosmo-magical world, which hinged upon ever-present duality: the human and the divine (the earth and the cosmos). Cosmovision is understood as one of the structures that is found throughout Mesoamerican history. It is evident that the concept was one adopted in varying forms by all Mesoamerican cultures, and aided