Linking pages
- Mesoamericans Have Been Using a 260-Day Ceremonial Calendar for Millennia | Science| Smithsonian Magazine https://www.smithsonianmag.com/science-nature/earliest-evidence-of-260-day-calendar-use-found-in-mexico-180981399/ 70 comments
- Earliest Evidence For Maya Calendar Found In Guatemalan Pyramid | IFLScience https://www.iflscience.com/editors-blog/earliest-evidence-for-maya-calendar-found-in-guatemalan-pyramid/ 13 comments