Gregorian-to-Aztec date conversion, with Aztec astrological notes.
Site breaks down all aspects of the Aztec calendric system
A "technical manual" for the Aztec Calendar and Aztec's perception of God by Dr. Randall C. Jimenez and Richard Graeber.
A sixteenth-century account of the religion and history of the Colhua Mexica, or Aztecs.
Science /
Astronomy /
Calendars_and_Timekeeping
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