The Maya sacred calendar

How the 260-day calendar works

The Maya calendar system is a set of interlocking cycles built on centuries of astronomical observation. The most central to daily spiritual life is the sacred 260-day calendar, known as the Tzolk'in in Yucatec Maya and the Cholq'ij in K'iche', the term now standard in highland Guatemala.

This calendar runs on two parallel cycles that mesh together: a sequence of numbers from 1 to 13, and a sequence of 20 named day-signs called nawales. Because 13 and 20 share no common factor, a specific number-and-nawal combination will not repeat until 260 days have passed (13 x 20 = 260). Each of these 260 positions is a distinct energy field, a "kin" in classical Maya terminology.

The 13-day cycle is called a trecena and functions as a kind of spiritual week, setting the overarching tone for those 13 days. The 20-day cycle is called a uinal. There are 20 trecenas in a full Cholq'ij round.

Why 260 days? The human and agricultural connection

The most widely noted explanation is that 260 days closely approximates the average human gestation period: the time from conception to birth. In Tz'utujil understanding, this is not a coincidence but the foundation. As the Tz'utujil artist Manuel Chavajay has explained, the 260-day count also matches the growing cycle of sacred maize from planting to harvest in the highland milpa system. One person (Jun Winaq in Tz'utujil, meaning "twenty") has 13 major joints and 20 fingers and toes: 13 and 20, the same numbers that build the calendar.

This cosmological unity across the human body, the agricultural cycle, and the calendar cycle is what makes the Cholq'ij something other than a scheduling tool. It is a map of living correspondence.

The 20 nawales

Each of the 20 day-signs carries a nawal: a specific spiritual energy, animal companion, and set of characteristics. In Maya cosmovision, no nawal is inherently good or bad; each has its medicine and its shadow. Below are the 20 nawales in the standard K'iche' names used across highland Guatemala, with their core associations:

Your birth nawal is the day-sign that falls on your birthday in the Cholq'ij calendar. The calculator below lets you find it.

The Haab and the Calendar Round

While the Cholq'ij guides spiritual timing, the Maya also use the Haab, a 365-day solar calendar divided into 18 named months of 20 days plus a 5-day period called Wayeb'. Because the Haab is used for agriculture and seasons while the Cholq'ij handles ritual and personal destiny, the two run simultaneously. It takes exactly 52 years for the same combination of positions in both calendars to repeat. This 52-year cycle is the Calendar Round, a unit of time recognized across many Mesoamerican civilizations.

The Long Count and 2012

For recording long stretches of mythological and dynastic time, the ancient Maya created the Long Count: a linear counter that ticks through five nested place values in a vigesimal (base-20) system. The famous December 2012 date marked the completion of the 13th baktun, one major cycle in the Long Count. It was not a predicted end of the world but the conclusion of a very large calendar round and the beginning of the next one. The living Cholq'ij and Haab calendars continued through that date without interruption.

Dreamspell vs the traditional Cholq'ij: an important distinction

Many online "Maya calendar" tools and apps are based on the Dreamspell system, created by José Argüelles in the 1980s. Dreamspell uses similar symbols and a similar structure to the Cholq'ij but applies a different correlation to the Gregorian calendar. The result is that Dreamspell gives you a different "nawal" than the traditional system used by K'iche' and Tz'utujil Ajq'ijab in Guatemala. If you ask a working daykeeper at Lake Atitlán to consult the calendar for you, they will use the traditional Cholq'ij with the GMT correlation (typically 584283). The calculator on this page also uses that correlation. If your result here differs from an app you have used before, you may have been using a Dreamspell-based tool.

Ajq'ijab: the living daykeepers

The Cholq'ij is not a historical artifact. It is actively practiced across the Maya highlands by Ajq'ijab (singular: Ajq'ij, meaning "keeper of days" in K'iche'). An Ajq'ij uses the calendar to advise on the best timing for ceremonies, agricultural decisions, marriages, construction, and other significant life events. They also provide birth consultations: calculating the nawal of a newborn and interpreting what that energy means for the child's path.

In and around Lake Atitlán, Ajq'ijab conduct fire ceremonies on significant days in the Cholq'ij round. You may see the remains of fire circles near the lake shore or on hilltops: offerings of candles, copal incense, chocolate, maize, and flowers, burned in specific patterns according to the ceremony's intent. These are living religious practices, not folklore.

A note on academic sources

For readers who want the scholarly grounding: the standard academic works on the Maya calendar include J. Eric S. Thompson's foundational studies of the GMT correlation, Anthony Aveni's Skywatchers of Ancient Mexico, and David Stuart's more recent epigraphic work. The GMT correlation (584283) used in this calculator represents the academic consensus for converting between Gregorian and Cholq'ij dates, though a minority of scholars prefer the 584285 variant. Both Wikipedia's "Maya calendar" article and the Smithsonian's National Museum of the American Indian provide accessible overviews with cited sources.

Find your nawal

Discover the Maya day-sign that governed the day you were born. The calculator below uses the standard GMT (584283) correlation, the baseline used by both academics and contemporary Ajq'ijab in Guatemala.

Related pages

• The 20 nawales: in-depth profiles
• Maximón: the syncretic folk saint of Santiago Atitlán
• Cofradías: the brotherhood system
• Maya heritage at Lake Atitlán