Sundials - World's Oldest Clocks

North American Sundial Society


Sundial 465
State/Province:  Arizona Country:  USA
Dial Type:  Horizontal Condition:  Good
Latitude:   32° 30' N Longitude:   111° W
  • On the north side of Steward Observatory at the University of Arizona
  • A simple square horizontal dial 20 x 20 inches carved in a 3 inch block of granite with a bronze gnomon. The dial has hour lines from 6am to 6pm for local solar time. No graph or table for longitude and Equation of Time corrections. Dial sits atop a 3 foot square pedestal.
General Information:
  • Owner: University of Arizona
  • Designer:
  • Builder: