• Introduction
• The Ring of Flames
• Detail of the Flame
• Assigned Values to the Ring of Flames
• The Day-Glyph Ring
• .6 of the Aztec Calendar
• 13 acatl on the Aztec Calendar: Two Indications
• 13 acatl and the Sun's Great Cycle Number
• The 16250 Venus Count on the Day-Glyph Ring
• Addendum/1: 8 quincunxes (52-year cycle) = 416-year cycle (365c)
• Addendum/2

This essay treats a possible method of calculation regarding the Ring of Flames of the Aztec Calendar, and the relationship thereof with the precession of the equinoxes. The 52-year cycle of the 365 day-count reckoning system is analyzed with respect to the spatial division of the design of the Aztec Calendar. The relationship of the 365c reckoning system and the Sun's Great Cycle (ca. 26000 years) is shown to be the result of design, and not a mere coincidence of numbers. A discussion and interpretation of the day-glyph number 13, acatl, examine its possible relation to the precession of the equinoxes.