What is "tonatico"

Tonatico Municipality is one of the municipalities of the State of Mexico, in Mexico located 153 kilometers from Mexico City, 105 from Cuernavaca, 84 from Toluca, 68 from Taxco and 5 from Ixtapan de la Sal. Tonatico, of Náhuatl origin, is from the Náhuatl word tonatihco, place of the sun.