First, you have to understand who the Maya are. The Maya are a group of indigenous American ethnic groups living in Mesoamerica, what is now southern Mexico, Guatemala, Belize, and the surrounding areas. Their civilization has been classified into three periods: preclassical from 2000 B.C. to 300 A.D., classical from 300 A.D. to 900 A.D., and postclassical, from 900 to the Spanish conquest 500 years ago. Their descendants still make up much of the population in their historic zone.
Then what is that makes the Maya so special? For one, the Mayan civilization was the only pre-Columbian American civilization known to have a fully developed written system of math and language. They were extremely advanced in certain ways, especially during the classical period, after which many cities were abandoned and their culture went slowly into missing.
Mayan theories of time are based around cycles that repeat themselves and extend on throughout history because they used several different calendars.
In Mayan culture, the numbers 13 and 20 were both considered highly significant where 20 is the number of fingers and toes and 13 for the number of major joints in the human body. a question for ourselves? how they know how many joint in human body without any recent technologies like x-rays?? Mayan religion also has 13 levels of heaven. The Maya rely on two calendars around the numbers 13 and 20.
The first calendar was the Tzolk’in. In a very simplified sense, this 260-day calendar was made up of 13 days spread throughout 20 “months,” based on a type of interlocking wheel that would determine the days. This was a very important ceremonial calendar for the Mayans, used to track religious holidays and determine a person’s characteristics from birth.
However, the Tzolk’in can’t measure a full solar year, which the Mayans also needed to do. That led to the creation of the Haab calendar. This calendar is much more similar to our modern Gregorian calendar, and it consists of 360 days as well as five “unnamed days” to create a whole year.
The Haab calendar still can’t measure long periods, however, so the two calendars were combined to create the Calendar Round. The two calendars were paired through a similar interlocking grid to create a calendar of 18,890 unique days, roughly 52 years. But even the Calendar Round didn’t allow Mayans to measure periods of hundreds or thousands of years.
Which brings us to the Long Count calendar.
The Long Count calendar lasts just over 5,125 years, which is referred to as a Great Cycle. Each cycle is made up of five units: one day (kin), 20 days (uinal), 360 days (tun), 7,200 days (katun), and 144,000 days (baktun). At the end of the 13th baktun, the cycle begins again.
HowStuffWorks notes that days in the Gregorian calendar can be converted to the Long Count. For instance, the date of the moon landing, July 20, 1969, would be 12.17.5.17.0. Reading left to right, it goes from the largest unit (baktun), to the smallest.
Dec. 21, 2012, the supposed “end of the world” would be written as 13.0.0.0.0, making it the last day of this Great Cycle.
Okay, so now we understand what the Mayan calendar is.