Tonalpohualli is the 260-day sacred calendar used by the Mexica (Aztecs) that played a critical role in their religious and cultural practices. This calendar interweaves 20 day signs with 13 numbers, creating a cycle that was believed to govern the spiritual, agricultural, and social aspects of life. Its significance extends into cosmology, where it was thought to connect the earthly realm with divine forces, guiding rituals and shaping education and intellectual achievements.
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