Aztec solar farmers
efore the arrival of the Spanish in 1519, the basin now known as Mexico City was home to around three million people. To feed so many people in a region featuring a dry spring and summer monsoons, the Aztec farmers needed a precise understanding of when seasonal variations would happen. The question has been, how did they achieve such specific understanding? Some refer to the so-called “Aztec calendar” as represented by the Sun Stone, but that stone was in fact solely
