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The sky and the cycles

The four cycles of the Mexica calendar: the 260-day count, the 365-day year, the five nemontemi and the fifty-two-year round.

The sky over TenochtitlanWhat was visible from the city, any night between 1325 and 2100 — and how far off we areWalking with both countsWhat it was like to live with two calendars turning at once, and why that is not a horoscope

How to cite this page

Alma Mexica, «The sky and the cycles», Alma Mexica. Revised 2026-09-17. https://almamexica.org/en/cycle/