Aztec Calendar
The Tonalpohualli is the Aztec sacred calendar — a 260-day cycle built from 20 named day signs paired with a 13-number cycle. Structurally it parallels the Mayan Tzolkin, and scholars believe both descend from a common Mesoamerican calendrical tradition. Each of the 260 combinations carries a patron deity, a directional association, and a quality of energy that Aztec priests used to determine auspicious timing for births, ceremonies, and decisions. The day sign of a person's birth was considered a primary indicator of character and destiny.
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Articles
Aztec Calendar: The Tonalpohualli and What Your Birthday Sign Means
The Aztec Tonalpohualli is a 260-day ceremonial calendar with 20 day signs and 13 tones — structurally identical to the Mayan Tzolkin, but with its own distinct Nahuatl character and iconography.
What Is the Aztec Calendar? The Tonalpohualli and Your Birth Day Sign
The Tonalpohualli is the Aztec sacred calendar — 260 days made from 20 day signs combined with 13 tones. Your birth day sign is fixed at birth and describes a fundamental quality of your energy. Here's how the system works.