Sundials - World's Oldest Clocks

North American Sundial Society

Honolulu  

Sundial 278
State/Province:  Hawaii Country:  USA
Dial Type:  Horizontal Condition:  Good
Latitude:   21° 18' 26" N Longitude:   157° 48' 38" W
Location:
  • In the courtyard of the Hawaii Institute for Astronomy, University of Hawaii Campus, 2680 Woodlawn Dr.
 
Description:
  • The dial is a raised horizontal circle 18 inches in diameter. The nearly inch-wide brass gnomon supports a raised relief globe, with the Hawaiian Islands uppermost to accurately show which part of the world is in sunlight. The dial has hour lines and a ring of 5-minute marks. Hours are numbered from 6 until 18. Cardinal points and magnetic north are indicated. Dial shows some signs of deterioration. Designer Ginnosuke Ohara is a dialist with Japan's Research Institute for Sundials. The dial base is a mushroom design of concrete about 40 inches high and 40 inches in diameter. A time capsule is located in the base, to be opened in 2030.
 
General Information:Inscription:
  • Owner: University of Hawaii
  • An attached plaque reads: "The first science which primitive people discovered was the movement of the heavenly bodies/ Dialist Ginn. Ohara" A second plaque has the Equation of Time incorporating longitude correction. A third plaque explains the EOT corrections.
  • Designer: Ginnosuke Ohara
  • Builder:
  • Construction Date: Dedicated 1979
 
References:
  • IAPS Listing, May 95
    Star Bulletin, (Honolulu) Jan 22, 1980, p. A2.