The twenty trecenas
The twenty stretches of thirteen days that divide the 260-day count. Each one takes the name of the day that opens it, and has its own ruling energy, direction and omen.
How this is made
Each entry gives the name, the ruling energy, the direction and when it comes round. The omen and the codex plates quote the sources in their own words and stay in Spanish.
Revised 2026-09-17.
How to cite this page
Alma Mexica, «The twenty trecenas», Alma Mexica. Revised 2026-09-17. https://almamexica.org/en/trecena/