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Aztec Calendar

Dale Hoyt Palfrey

Mexica/Aztec Calendar Systems

The Civil Calendar

The solar year was the basis for the civil calendar by which the Mexicas (Aztecs) determined the myriad ceremonies and rituals linked to agricultural cycles. The calendar was made up of 18 months, each lasting 20 days. The months were divided into four five-day weeks. The year was rounded out to 365 days by the addition of the five-day nemontemi (empty days), an omnious period marked by the cessation of normal activities and general abstinence. The correlation of dates in the Gregorian calendar is uncertain, although most authors on the subject affix the beginning of the Aztec year to early Febuary. A variety of sources were consulted in developing the following chart of some of the ritualistic activities associated with each month.

No. Name of Month Patron Gods and Rituals
I. Atlacacauallo (ceasing of water) Tlaloc, Chachihutlicue
Children sacrificed to water gods
II. Tlacaxipehualiztli (flaying of men) Xipe-Totec
Gladitorial sacrifice; dances by priest wearing the flayed skin of victims
III. Tozoztontli (little vigil) Coatlicue, Tlaloc
Flayed skins buried, child sacrifices
IV. Hueytozoztli (great vigil) Centeotl, Chicomecacoatl
Blessing of new corn; maiden sacrificed
V. Toxcatl (dryness) Tezcatlipoca, Huitzilopochtli
Impersonators of these major gods sacrified
VI. Etzalcualiztli (meal of maize & beans) Tlaloques
Impersonators of water dieties sacrified by drowning; ritual bathing and dances
VII. Tecuilhuitontli (small feast of the lords) Huixtocihuatl, Xochipilli
Impersonators of the gods sacrificed; ceremony of salt workers
VIII. Hueytecuihutli (great feast of the lords) Xilonen
Feast for godess of young corn, lords offer gifts and feast for commoners
IX. Tlaxochimaco (birth of flowers) Huizilopochtli
All the gods festooned with garlands; feasting on corn-meal cakes and turkey
X. Xocotlhuetzin (fall of fruit)
Hueymiccaihuitl (great feast of the dead)
Xiuhtecuhtli
Ceremonial pole climbing competition Sacrifice to fire gods by roasting victims alive
XI. Ochpaniztli (sweeping of the roads) Tlazolteotl
Sweeping of house and roads; mock combat
XII. Teoleco (return of the gods) Tezcatlipoca
Ceremonies welcoming gods returning to earth; ceremonial drunkeness, sacrifices by fire
XIII. Tepeihuitl (feast of the hills) Tlaloc
Ceremonies for mountain rain gods; human sacrifices and ceremonial cannibalism
XIV. Quecholli (precious feather) Mixcoatl-Camaxtli
Ritualistic hunt following fast; sacrifice of game and ceremonial feasting
XV. Panquetzaliztli (raising of the banner) Huitzilopochtli
Homes and fruit trees decorated with paper banners; race-procession; massive sacrifices
XVI. Atemoztli (water decends) Tlaloc
Festival honoring water gods; children and slaves sacrificed
XVII. Tititl (streching) Llamatecuhtli
Sympathetic magic to bring rain; women beaten with straw-filled bags to make them cry
XVIII. Izcalli (resuscitation) Xiuhtecuhtli
Image of god made from amaranth dough; feasting on tamales stuffed with greens
Nemontemi (empty days) Five unlucky days; no rituals, general fasting

Tonalpohualli - The Ritual Calendar

The tonalpohualli (count of days) was the sacred almanac of the Mexicas. This ritual calendar was registered in the tonalamatl (book of days), a green-fold bark paper or deerskin codex from which a priest (called tonalpouque) cast horoscopes and predicated favorable and unfavorable days of the cycle. The almanac year comprised of 260 days, each of which was assigned a date by intermeshing one of 20 day-signs, represented graphically with a gylph, and a number from 1 to13, represented by dots so that no two days in the cycle could be confused. The almanac year was thus made up of 20 13-day weeks, with the first week beginning on 1-Crocodile and ending on 13-Reed, the second week running from 1-Ocelot to 13-Deaths' Head and so on. A god or godess was believed to preside over each day-sign, as shown in the following chart.

Cipactli-Crocodile Tonacatecuhtli- Lord of our Sustenance; male aspect of dual gods
Ehecatl-Wind Quetzalcoatyl- Plumbed Serpent; god of knowledge and the preisthood
Calli-House Tepeyolohtli- Heart of the Mountain; jaguar god of the interior earth
Cuetzpallin-Lizard Huehuecoyotl- Old Coyote; back-biiter or mischief-maker
Coatl-Serpant Chalchiuhtlicue- Lady of the jade skirt; goddess of ground waters
Miquiztli-Deaths' Head Tecciztecatl-He from the sea-snail; moon god
Mazatl-Deer Tlaloc- He who makes things sprout; god of rain and earth fertility
Tochtli-Rabbit Mayahuel- She of the maguey plant; godess of pulque (maguey wine)
Atl-Water Xiuhtecuhtli- Lord of the year; fire god, patron of rulers
Itzcuintli-Dog Miclantecuhtli- Lord of Mictlan (Region of the Dead);god of death
Ozomatli-Monkey Xochipilli- Flower Prince; god of flowers and plants
Malinalli-Grass Patecatl- He from the Land of Medicines; god of medicinal plants
Acatl-Reed Tezcatlipoca- Smoking mirror; major creator of god, god of fate
Ocelotl-Ocelot Tlazolteotl- Eater of Filth; earth mother
Cuauhtli-Eagle Xipe- Totec- Our Flayed Lord; god of seeding and planting
Cozcaquauhtli-Vulture Itzapapalotl- Obsidian Butterfly; stellar and agricultural godess
Ollin-Motion Xolotl- Double; Monster god, twin of Quetzalcoatl
Tecpatl-Flint Knife Chalchiuhtotolin- Guise of Tezcatlipoca; god of night and the mysterious
Quiahuitl-Rain Chantico- In the House; godess of the hearth
Xochitl- Flower Xochiquetzal- Flower of the Rich Plume; godess of flowers

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Published or Updated on: August 29, 2007 by Dale Hoyt Palfrey © 2008
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