Mesoamerican Long Count calendar the use of zero as a place-holder and presents one of the earliest uses of the zero concept in history. On Maya monuments, the Long Count syntax is more complex. The date sequence is given once, at the beginning of the inscription and opens with the so-called ISIG (Introductory Series Initial Glyph) which reads "tzik-a(h) hab’ [patron of Haab' month]" ("revered was the year-count with the patron [of the month]"). Next come the 5 digits of the Long Count, followed by the Calendar Round (tzolk'in and Haab') and supplementary series. The supplementary series is optional and contains lunar data, for
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