The Cult
The moon's cult was the calendar's cult. In the Mexica capital her phases were watched nightly by the priestly astronomers — the same tonalpōhuqueh who read the day-count — and the eighteen monthly feasts turned on her reckoning. At the Templo Mayor her defeat was cast into sacred architecture: the Coyolxauhqui Stone lies at the foot of Huitzilopochtli's stair, so that every victim cast down those steps reenacted the moon's dismembering at Coatepec — a reading the stone's 1978 excavation, in that exact position, confirmed. At eclipses the city armed itself against the Tzitzimime, the star-skeletons who descend when the lights fail; Sahagún's informants describe the shouting and rattling meant to drive them off. And in the household, the lunar healer Temazcalteci presided over the temazcal, the sweatbath served by midwives — the moon's medicine of steam, herbs, and water administered at the hour it was needed.


