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February 1, 2023

UT art researchers find earliest known notation of Maya ritual calendar

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Researchers from the University of Texas have found evidence for the earliest known Maya calendar in San Bartolo.

While excavating murals, University of Texas art history professor David Stuart found two fragments that, when pieced together, form the notation “7 Deer,” which dates back more than 2,000 years to 300 B.C., several centuries older than previously obtained evidence.

The fragments are part of the Maya divination calendar, which was also used by other Mesoamerican cultures, including the Aztecs, and is still in use today. The calendar survived hundreds of years of conquests and the almost 40-year Guatemalan civil war, testament to the long history of Maya intellectualism.

“The Maya calendar is one of the most distinctive and well-known features of the culture and of traditional Mesoamerican peoples. It was in use for centuries before the arrival of Europeans, and some of it is still being used among indigenous Maya communities in Guatemala,” said Stuart, who was part of the team that discovered the site of San Bartolo in 2001. “But its origins have long been murky. The discovery of the painted fragment at San Bartolo allows us to establish a good date of 300 B.C., which is far earlier than any date we had before.”

The 7 Deer day record is important for understanding the development of the 260-day divination calendar. The calendar is an important aspect of indigenous Maya identity in many contemporary communities, and this discovery establishes a good baseline for understanding the origins of Mesoamerican writing, science and religion.



Alongside the discovery of the calendar, researchers found 10 other text fragments that reveal an established writing tradition, multiple scribal hands, and murals combining texts with images from an early ritual complex. Stuart was also part of the team that discovered the site of San Bartolo in 2001.

“Before this, many assumed that the Maya simply borrowed an older system from other nearby cultures. Now we know they had it as early as anyone else, if not earlier,” Stuart said. “The Maya were key players in the development of Mesoamerica as a whole.”


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