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How was the 260-day calendar used to read fate?
The 260-day count, called tzolkin by the Maya and tonalpohualli by the Aztecs, was a divinatory almanac. Each day carried a set of qualities, and priests read those qualities to advise on a person's destiny, naming, illness, rituals and warfare.
Facts checked on against 17 sources, 8 of them museum, university, archive, library, government or primary texts.
Key facts
Every line comes from a source listed at the bottom of the page. The small numbers point to it.
| Pre-Classic period | Britannica dates the almanac to the pre-Classic period at Monte Albán and, earlier, in the Veracruz (Olmec) culture.1 |
|---|---|
| Classic period | In Classic times the Maya used the Tzolk'in in inscriptions and codices, and the year bearers were Ak'bal, Lamat, Ben and Etz'nab.23 |
| Before the Spanish arrival | According to the Codex Fejérváry page 1 account, priests used the 260-day almanac to predict the fate of persons, determine illness and healing, schedule rituals, and advise rulers on the most favorable moment for war.45 |
| After the Spanish arrival | Knowledge of how the prediction worked was almost completely lost after the arrival of the Spaniards.5 |
| Present day | Daykeepers in the K'iche', Kaqchikel and Ixil communities of highland Guatemala still keep the 260-day count.62 |
| Around 3rd century BC or earlier | Excavations at San Bartolo, Guatemala, pushed direct evidence of calendar use back to the 3rd century BC or earlier.67 |
The count and its structure
The 260-day Tzolk'in forms when 20 named days are combined with the numbers 1 to 13, so that a given day name recurs with the same number only every 260 days.83
Each day is uniquely designated by a coefficient and day-name pair, and the Tzolk'in was a chronological framework for Maya ceremonial life as well as a basis for prophecies.2
Day names in the Tzolk'in and tonalpohualli are almost one-to-one across Mesoamerican cultures, which suggests a very old shared origin.96
Reading fate from the day
Priests used the 260-day almanac to assign a destiny to a newborn based on the day of birth, and to give personal names to newborns from that day.5
Birthdates were recorded by the 260-day count, and the patron deity of the birth day was closely associated with a person's destiny.210
Each day carried a deity and a set of good, neutral or bad qualities, which specially trained priests read and interpreted.4511
A reading begins with the day's characteristics, and the number that accompanies the day then modifies its meaning.12
Daykeepers were consulted for marriage, naming, planting, warfare, trade journeys and political ceremonies, and the Maya almost never cited a Tzolk'in date alone without the Haab.6
In K'iche' highland divination, a diviner counts red tz'ite seeds and crystals while progressing through the day sequence to read the portent of day positions relative to the question asked.6
Limits of the record
The 260-day count was not practically usable for fixing agricultural planting, since it repeats without a fixed starting point in the year, and farmers relied on their own experience.54
What the tradition holds
How practitioners describe it, in their terms. Described, not endorsed.
The Ajq'ijab in the Guatemalan highlands celebrate Wajxaqib' B'atz every 260 days, welcoming a new cycle of the Chol Q'ij and initiating new calendar Day Keepers.13
Aztec tradition, as recorded in Aztec sources, treated the tonalpohualli as a map of destiny based on birth date and as a way of calculating the energies of any period of time.14
What the evidence shows
What historians, scientists and controlled tests have found.
Émile Biémont reports that some scholars have linked the 260-day cycle to human gestation, since it is the number closest to gestation length in the vigesimal system, and he says the most plausible explanation comes from observing the Sun's passages through the zenith.15
Byland states that the Codex Borgia's day-sign images are interpreted as qualifiers, but their actual significance to a pre-Columbian priest remains obscure.16
Love (1994) describes the Paris Codex as containing the only complete almanac of 260-day tzolkin recurrent intervals in the codex, and says its illustrated lists mark tzolkin days that begin the 365-day year over a 52-year period.17
Scholars disagree on how the images in the Paris Codex relate to its associated calendrical intervals.17
Worked out from the evidence
Not stated outright by any one source. It is worked out from the sources cited.
- The 260-day count was a divinatory almanac in which the qualities of each day, read by specialists, framed decisions about a person's destiny, naming, and the timing of rituals and war, and the tradition taught that it also bore on illness.54
- The accounts of the day-count's astronomical origin disagree, so the origin of the 260-day cycle is still an open question for historians.9156
Not yet confirmed
- Which astronomical or biological observations, if any, shaped the choice of 260 days for the count?
- How the Codex Borgia and Paris Codex images were tied to the specific readings of individual days?
Sources
Museums, universities, archives and primary texts first. Every fact is paraphrased and nothing is copied; Wikipedia is never cited.
- britannica.com: Tonalpohualli | Aztec Calendar, Rituals & Divination | Britannica. Read on · Reference
- mayaarchaeologist.co.uk: The Maya Calendar Explained - Maya Archaeologist - Dr Diane Davies. Read on · Reference
- chichenitza.com: Mayan Calendar | Chichen Itza Information | Mayan Culture | Chichen Itza. Read on · Reference
- Internet Archive: CODEX FEJERVARY PAGE 1 NED. Read on · Primary text
- Internet Archive: CODEX FEJERVARY PAGE 1 ENG. Read on · Primary text
- mayan.org: The Tzolk'in: Inside the Maya Sacred 260-Day Count | Mayan.org | Mayan.org. Read on · Reference
- science.org: An early Maya calendar record from San Bartolo, Guatemala | Science Advances. Read on · Reference
- journals.iaepan.pl: The origin of the Tzolkin and the Long Count: Hans Ludendorff was right | Przegląd Archeologiczny. Read on · Peer-reviewed journal
- mayanpeninsula.com: The Mayan Calendar - Haab, Tzolkin, Long Count and more.... Read on · Reference
- hmdb.org: Tzolkin Historical Marker. Read on · Reference
- mayan-calendar.org: TZOLKIN CALENDAR | Mayan Calendar 260 Day Tzolkin Calendar Cycle. Read on · Reference
- cloud9.guide: Tzolkin | Cloud 9 Guide. Read on · Reference
- maya.nmai.si.edu: The Calendar System | Living Maya Time. Read on · University
- iaia.edu: Tonalpohualli: Count of Days < Institute of American Indian Arts (IAIA). Read on · University
- link.springer.com: The Xiuhpohualli and the Tonalpohualli of the Aztecs | Springer Nature Link. Read on · Peer-reviewed journal
- Internet Archive: The Codex Borgia - Book of Quetzalcoatl. Read on · Primary text
- archive.org: Paris Codex. Read on · Primary text