The Mayan Calendar determines dates by its position in both the Tzolkin and the Haab calendars.” Together, this creates “18,980 unique date combinations, they use this to identify each day within a cycle lasting about 52 years. A Calendar Round is the completion of each cycle period.
Explanation:
The 260-day calendar was used to adjudge, really important activities related to the gods and humans. It was used to name people , predict the future, decide on auspicious dates for battles, marriages, and so on.