Panquetzaliztli is the name of the fifteenth month of the

Aztec calendar The Aztec or Mexica calendar is the calendar, calendrical system used by the Aztecs as well as other Pre-Columbian era, Pre-Columbian indigenous peoples of Mexico, peoples of central Mexico. It is one of the Mesoamerican calendars, sharing the bas ...

. It is also a festival in the

Aztec religion The Aztec religion is a polytheistic and monistic pantheism in which the Nahua concept of '' teotl'' was construed as the supreme god Ometeotl, as well as a diverse pantheon of lesser gods and manifestations of nature. The popular religion te ...

dedicated to Huitzilopochtli. The correlation of Rafael Tena calculates the twenty-day month as lasting from November 30th to December 9th.El Calendario Mexica y la Cronografía. INAH-CONACULTA Rafael Tena p 104-109

References

Aztec calendars Aztec mythology and religion {{time-stub