Science. 1973 Sep 7;181(4103):939-41. doi: 10.1126/science.181.4103.939.
The sacred 260-day Mesoamerican calendar probably originated near a latitude of 15 degrees N, where there is a 260-day interval between transits of the zenithal sun. Archeological and faunal evidence favors an origin in the Pacific lowlands rather than in the highlands near Copán, Honduras, although Copán, which is located at the 15th parallel of latitude, later became the principal Mayan astronomical center.
可能起源于北纬 15 度附近的中美洲 260 天历法，那里的天顶太阳两次经过之间有 260 天的间隔。考古学和动物群证据表明，它起源于太平洋低地，而不是洪都拉斯科潘附近的高地，尽管位于北纬 15 度的科潘后来成为主要的玛雅天文中心。
