‘World’s oldest calendar’ found carved onto ancient monument in Turkey

This calendar also shows 12 lunar months with 11 additional days, the researchers said

The ‘world’s oldest calendar’, unearthed at the Gobekli Tepe site in southern Turkey (Martin Sweatman/University of Edinburgh/PA)

The world’s oldest calendar, carved onto an ancient pillar around 12,000 years ago, has been discovered by archaeologists.

The timekeeping system, unearthed at the Gobekli Tepe site in mountains of Anatolia in Turkey, suggests people were accurately recording dates 10,000 years before it was documented in Greece in 150 BC.