Ancient inhabitants of the Basin of Mexico kept an accurate agricultural calendar using sunrise observatories and mountain alignments
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DOI: 10.1073/pnas.2215615119
Abstract: Significance Without the navigational and calendric instruments of the 16th century Europeans (like gnomon, compass, quadrant, or astrolabe), the inhabitants of the Basin of Mexico were able to keep an accurate agricultural calendar that allowed… read more here.
Keywords: calendar; agricultural calendar; basin mexico; inhabitants basin ... See more keywords