---
title: Tonalpohualli Mesoamerican Calendar
author: Richard Graeber
source: https://www.worldhistory.org/image/4981/tonalpohualli-mesoamerican-calendar/
format: machine-readable-alternate
license: Creative Commons Attribution (https://creativecommons.org/licenses/by/4.0)
updated: 1970-01-01
---
# Tonalpohualli Mesoamerican Calendar
_Authored by Richard Graeber_
## Image File
[](https://www.worldhistory.org/uploads/images/4981.jpg)
## Image Caption
A representation of the Tonalpohualli – ‘Counting of the Days’ 260-day calendar used by ancient Mesoamerican cultures. Two systems ran simultaneously with a group of 13 numbered days combined with a group of 20 name days. Thus, each day had a unique combination of day and number.
## Cite This Work
### APA
Graeber, R. (2016, April 21). Tonalpohualli Mesoamerican Calendar. *World History Encyclopedia*.
### Chicago
Graeber, Richard. "Tonalpohualli Mesoamerican Calendar." *World History Encyclopedia*, April 21, 2016. .
### MLA
Graeber, Richard. "Tonalpohualli Mesoamerican Calendar." *World History Encyclopedia*, 21 Apr 2016, .
## License & Copyright
[Original image](https://commons.wikimedia.org/wiki/File:AACTonal.1.jpg) by [**Richard Graeber**](https://commons.wikimedia.org/wiki/File:AACTonal.1.jpg). Submitted by [Mark Cartwright](https://www.worldhistory.org/user/markzcartwright/ "User Page: Mark Cartwright"), published on 21 April 2016. The copyright holder has published this content under the following license: [Creative Commons Attribution](https://creativecommons.org/licenses/by/4.0deed.en). This license lets others distribute, remix, tweak, and build upon your work, even commercially, as long as they credit you for the original creation. When republishing on the web a hyperlink back to the original content source URL must be included. Please note that content linked from this page may have different licensing terms.