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| Xiuhpōhualli | |
|---|---|
| Name | Xiuhpōhualli |
| Type | Solar calendar |
| Country | Aztec Empire |
| Epoch | Pre-Columbian Mesoamerica |
| Length | 365 days |
| Subdivisions | 18 veintenas + 5 nemontemi |
Xiuhpōhualli is the 365-day solar calendar used by the Aztec Empire and related Nahua polities in central Mesoamerica during the Late Postclassic period, functioning alongside the 260-day ritual calendar used across Mesoamerica such as the Maya calendar and the Tzolk'in. It informed ceremonial practice in Tenochtitlan, scheduling for rulers like Moctezuma II and officials of the Triple Alliance, and provided temporal structure referenced in colonial sources by chroniclers like Diego Durán and Bernardino de Sahagún. Surviving visual records in codices such as the Codex Borgia, Codex Borbonicus, and Florentine Codex document its month-names, symbols, and associated deities used by the Mexica and allied altepetl including Texcoco and Tlacopan.
The term derives from Classical Nahuatl vocabulary used by scribes in Tenochtitlan and allied centers; colonial lexicographers like Andrés de Olmos and Fray Bernardino de Sahagún recorded Nahuatl glosses that link month-names to deities attested in Codex Magliabechiano and the Codex Mendoza. Early modern sources from the Spanish Empire such as accounts by Hernán Cortés’s contemporaries and annalists in the Relaciones geográficas tradition compared the solar year with the ritual year described by Diego Durán, and ethnographers such as Miguel León-Portilla and scholars referencing Alexander von Humboldt have traced etymological roots in Nahuatl lexemes preserved in colonial manuscripts and later studies housed in institutions like the Biblioteca Nacional de México.
The solar year is structured into 18 named 20-day periods often called veintenas in Spanish colonial texts, followed by five unlucky days recorded as nemontemi; these divisions were described in pictorial form in the Codex Borbonicus, annotated in the Florentine Codex, and correlated with festival lists in the Codex Telleriano-Remensis. Administratively, the cycle was integrated with ceremonies in plazas such as the Templo Mayor and with calendrical rituals overseen by priestly colleges like those chronicled in accounts by Fray Bernardino de Sahagún and Andrés de Olmos, while later interpretations by scholars including Alfredo López Austin and Eduardo Matos Moctezuma analyze the interaction between solar reckoning and political cycles in the Aztec Empire and regional altepetl networks.
Each 20-day period carried associated festivals, sacrificial rites, and prostheses of ritual practice linked to specific deities such as Huitzilopochtli, Tlaloc, Quetzalcoatl, and Tezcatlipoca; pictorial calendrics in the Codex Borgia and narrative descriptions in the Florentine Codex document offerings, dances, and sacrificial sequences performed at locations including the Templo Mayor and regional shrines in Texcoco. Spaniards like Bernal Díaz del Castillo and missionary authors such as Andrés de Olmos reported calendar festivals during conquest-era encounters, while colonial legal documents in the Archivo General de la Nación (Mexico) preserve references used in scholarly syntheses by Ross Hassig and Elizabeth Hill Boone linking ritual timing to tribute cycles, military campaigning seasons, and dynastic ceremonies of rulers like Itzcoatl.
Practical agricultural timing for cultivation of maize, beans, and squash in the Basin of Mexico aligned with veintena festivals and agricultural rites recorded in agricultural treatises, pictorial almanacs such as the Codex Mendoza, and in ethnohistoric descriptions by Diego Durán and Bernardino de Sahagún. Observational astronomy documented by later commentators and inferred from alignments at ceremonial centers like Tenochtitlan and regional sites studied by archaeologists including Eduardo Matos Moctezuma and Sahagún’s informants tied the solar cycle to solstitial and equinoctial markers visible at monuments analogous to those at Teotihuacan and Cihuacoatl-associated precincts; modern archaeoastronomers such as Anthony Aveni and E.C. Krupp have compared calendrical iconography to horizon observations and agricultural phenology.
Primary pictorial sources include the Codex Borgia, Codex Borbonicus, Codex Mendoza, and Codex Telleriano-Remensis, while ethnohistorical narratives appear in the Florentine Codex and chronicles by Diego Durán, Bernal Díaz del Castillo, and annalists preserved in the Relaciones geográficas. Colonial-era grammars and vocabularies by Andrés de Olmos and Antonio de Nebrija informed early philological work later synthesized by historians such as Miguel León-Portilla and archaeologists like Eduardo Matos Moctezuma, and modern editions in the holdings of institutions including the Biblioteca Nacional de España and the Bodleian Library provide comparative material for philologists, iconographers, and ethnographers studying calendar reconstruction.
Elements of the solar calendar survive in contemporary Nahuatl-speaking communities, regional festivals in the Basin of Mexico, and in scholarly and popular reconstructions by institutions such as the National Autonomous University of Mexico and museums like the National Museum of Anthropology (Mexico). Revival movements draw on codices and ethnohistoric texts cited by researchers including Miguel León-Portilla, Eduardo Matos Moctezuma, and Alfredo López Austin to reintroduce ceremonial cycles into community ritual calendars, while comparative studies by scholars such as Nicholas Hopkins examine continuity with neighboring systems like the Maya calendar, the Mixtec codices, and calendrical practices documented across Mesoamerica.
Category:Aztec calendars