Scholars show how multiple planet movements tie into the 819-day Mayan calendar. The 819 days of the calendar must be viewed across a 45-year time period to fully understand. The movements of all ...

Archaeologists found the calendar fragment among a total of 249 pieces of painted plaster and painted masonry block. Photograph by Karl Taube / Courtesy of the Proyecto Regional Arqueológico San ...

The Maya Civilization, from Central America, was one of the most advanced ancient civilizations, known for its significant achievements in astronomy and mathematics. This includes accurate calendars ...

Deena Shinn is a freelance writer and editor. When she's not writing or wrangling her two feisty daughters, you can find her experimenting with sourdough bread or exploring northern California.

If you thought 365 days was a long time, try resetting your calendar every 18,980 days instead. 52 solar years make up the longest cycle of the Mayan calendar – a complex and ancient system that’s ...

Ancient Mayas predict the world will end Friday if one is to believe their calendar and prophesy. Or Is it really their idea? Nobody knows for sure. Yes, Dec. 21 is supposed to mark either the end of ...

I am floating down a slow-moving river bordered by mangroves and seagrass, the water so clear I can see to the bottom. I have nothing to do but sit back and let the current take me. There are hardly ...