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| Aztec calendar stone |
Click on the pictures
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| Aztec calendar stone |
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| Tonalamatl 260-day calendar. Divided into 20 periods of
13 days, called Trecenas. This Trecena 14 was governed by Xipe Totec and Quetzalcoatl. Each day panel has a Lord of the Day, a Lord of the Night, and an augural bird. |
