'World's oldest calendar' discovered carved into ancient monument - Space.com
- 'World's oldest calendar' discovered carved into ancient monument Space.com
- Carvings at world’s oldest monument suggest civilisation began after comet strike The Independent
- Archaeologists discover world's oldest calendar that could rewrite birth of civilization Daily Mail
- Carvings in Ancient Temple of Göbekli Tepe Could Be Earth's Oldest Calendar ScienceAlert
- Edinburgh University archaeologists discover world's oldest calendar carved onto ancient pillar Daily Record