Izcalli is the name of the Eighteenth and last month of the Aztec calendar. It is also a festival in the Aztec religion, the principal deity is Xiuhtecuhtli the fire God and old People are honored this month and is known as Rebirth Month . 
- "Izcalli, the Rebirth, the 18th Month of the Aztec Solar Calendar". World Digital Library. Retrieved 15 August 2013.
- "The Aztec Festivals.". www.amoxtli.org. Retrieved 15 August 2013.
- Traditional festivals. 2. M - Z. ABC-CLIO. pp. 211–. ISBN 978-1-57607-089-5. Retrieved 15 August 2013.
- Thomas Athol Joyce (31 August 2013). Mexican Archaeology: An Introduction to the Archaeology of the Mexican and Mayan Civilizations of Pre-Spanish America. Cambridge University Press. pp. 72–. ISBN 978-1-108-06374-6. Retrieved 15 August 2013.