New Fire ceremony
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The New Fire ceremony (in Nahuatl xiuhmolpilli (the Binding of the Years), was an Aztec ceremony performed once every 52 years—a full cycle of the Aztec calendar—in order to stave off the end of the world.
According to Bernardino de Sahagún, the last New Fire ceremony was held in 1507; the tradition ended with the Spanish conquest of Mexico in 1519–1521.