Sundials - World's Oldest Clocks

North American Sundial Society

Rock Island  

Sundial: 632
State/Province:  Illinois Country:  USA
Dial Type:  Horizontal Dial Condition:  Restored; good
  Latitude and Longitude: 41° 31.400' N  90° 32.900' W
  • Rock Island Arsenal
    Rock Island, Illinois
    Intersection of Gillespie and Blunt roads on north shore of Arsenal Island
  • A horizontal dial approximately 30 inches diameter reportedly cast from an old brass (bronze, likely) cannon and weighing 175 pounds. Dial was weathered and damaged by vandals but restored in 1970 using black light to reveal the original engraved markings, which were re-engraved. Access may require admission to arsenal.
General Information:Inscription:
  • Owner: Rock Island Arsenal
  • FUGACES LABUNTUR HORAE (Fleeting Hours are Gliding Hours)
    "Rock Island Sun Dial, Dedicated September 1877"
  • Designer:
  • Builder:
  • Construction Date: Sept, 1877; restored Sept, 1970
  • Sightings column of March 2008 Compendium