Long before the advent of clocks and modern tools, the ancient Mexicans devised a precise farming calendar that allowed them to track seasons, adjust for leap years, and avoid weather-related risks. Recent research by the University of California, Riverside, reveals that the Aztecs achieved this precision by observing the rising sun from a single spot, Mount Tlaloc, and using the whole Mexican Basin as their working instrument.
By pinpointing specific landmarks where the sun would rise, the Aztecs were able to detect solstices, equinoxes, and even “solar declination.” Their remarkable calendar system demonstrates the ingenuity and sophistication of ancient civilizations.
