From Wikipedia, the free encyclopedia
Huey Tozoztli also known as Huey Tocoztli is the name of the fourth month of the Aztec calendar.It is also a festival in the Aztec religion dedicated to Tlaloc and other deities.It is called the Great or long vigil. 
- "Hueytozoztli, Continuation of the Festival of Bird Sacrifices, the Fourth Month of the Aztec Solar Calendar". World Digital Library. Retrieved 21 July 2013.
- Alexander von Humboldt (1814). Researches, Concerning the Institutions & Monuments of the Ancient Inhabitants of America: With Descriptions & Views of Some of the Most Striking Scenes in the Cordilleras!. Longman, Hurst, Rees, Orme & Brown, J. Murray & H. Colburn. pp. 295–. Retrieved 21 July 2013.
- Manuel Aguilar Moreno (12 September 2007). Handbook to Life in the Aztec World. Oxford University Press. pp. 296–. ISBN 978-0-19-533083-0. Retrieved 25 July 2013.
- "The Aztec Festivals". www.amoxtli.org. Retrieved 25 July 2013.