Mayans track 20 different cycles (calendars) of varying durations, which have to do with plants, humans, prophecies, numerics, solar system, galaxy, universe and the divine to name a few.

• 玛雅人追踪20种持续变化的不同周期（历法），与行星、人类、预言、数字、太阳系、银河系和宇宙有关，一些有神圣的名字。