Markings on a stone pillar at a 12,000 year-old archaeological site in Turkey likely represent the world's oldest solar calendar, created as a memorial to a devastating comet strike, experts suggest.

Event Abstract: Ancient Maya cosmology and sociocultural conduct was entwined with a complex calendar system. This is evident from thousands of stone inscriptions and other extant texts, especially ...

The Aztecs, just like the Mayans, used three distinct calendars, which led to a very complex form of astrology being formed. This art associates a sign of the day, a sign of the month and a sign of ...

The heiau, as it’s known in Hawaiian, was reconstructed in 2007 and dates to the early to mid 15th century, according to a Feb. 24 news release from the University of Hawaiʻi at Mānoa. Researchers ...