Sundials - World's Oldest Clocks

North American Sundial Society

Tenango de Doria  

Sundial: 459
State/Province:  Hidalgo Country:  Mexico
Dial Type:  Vertical Dial Condition:  Excellent
  Latitude and Longitude: 20° 20.211' N  98° 13.476' W
Location:
  • At the entrance of the Colegio de Bachilleres Tenango de Doria (high School)
 
Description:
  • A very striking vertical reclining dial 85 x 115 cm created from hand painted tiles, each individually fired in a kiln and assembled at Tenango de Doria by David Canyedo. In addition to hour lines, the dial includes declination lines for the solstices and equinox. The dial includes constellation maps of both the northern and southern hemispheres, a celestial sphere, and rose of winds (compass). The artistry also includes NAHUI OLLIN (the fifth sun which is the era we are living in according to the Aztecs). The dial has an equation of time that allows conversion from local solar time to standard time. The dial was designed to arouse interest of high school students in astronomy.
 
General Information:Inscription:
  • Owner: Donated to the High School
  • Inscribed, "Como una sombra se va la vida" (Life goes by like a shadow)
  • Designer: David Canyedo
  • Builder: David Canyedo
  • Construction Date: 1998
 

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