12,000 Years Old: World’s Oldest Solar Calendar Discovered on Ancient Turkish Pillar

Research at Turkey’s 12,000-year-old Göbekli Tepe site indicates that carvings on ancient pillars likely represent the world’s oldest solar calendar, potentially created to commemorate a catastrophic comet strike that may have spurred the development of civilization.

Experts suggest that markings on a stone pillar at a 12,000-year-old archaeological site in Turkey likely represent the world’s oldest solar calendar, created to memorialize a devastating comet strike. These markings, found at Göbekli Tepe in southern Turkey—an ancient complex featuring temple-like enclosures adorned with intricate carvings—may document an astronomical event that sparked a significant shift in human civilization, researchers believe.

The research suggests ancient people were able to record their observations of the sun, moon, and constellations in the form of a solar calendar, created to keep track of time and mark the change of seasons. A fresh analysis of V-shaped symbols carved onto pillars at the site has found that each V could represent a single day. This interpretation allowed researchers to count a solar calendar of 365 days on one of the pillars, consisting of 12 lunar months plus 11 extra days.