Wha was the purpose of the Maya tzolkin

To measure long periods of time

The purpose of the Maya tzolkin the tzolk'in, the basic cycle of the Maya calendar, is a preeminent component in the society and rituals of the ancient and the modern Maya. The tzolk'in is still in use by several Maya communities in the Guatemalan highlands. Its use is marginal but spreading in this region, although opposition from Evangelical Christian converts continues in some communities.