The Aztecs, just like the Mayans, used three distinct calendars, which led to a very complex form of astrology being formed. This art associates a sign of the day, a sign of the month and a sign of ...

Scientists suggest in a new study that ancient Mesoamericans tracked leap years using a sunlit horizon. By Becky Ferreira Long before Europeans colonized North America, the Indigenous peoples in the ...

Without clocks or modern tools, ancient Mexicans watched the sun to maintain a farming calendar that precisely tracked seasons and even adjusted for leap years. Without clocks or modern tools, ancient ...