Kennett Square  

Sundial: 328
State/Province:  Pennsylvania Country:  USA
Dial Type:  Analemmatic Dial Condition:  Excellent
  Latitude and Longitude: 39° 52.367' N  75° 40.483' W
  • Longwood Gardens on US 1
    South east of the conservatory, in the topiary garden at ground level,
    West Tour.
  • 37.2 ft x 23.8 ft. This is probably the world's largest analemmatic, unusually designed to show standard time directly. It took 8 years of daily readings to perfect the sundial, which is accurate to within 2 minutes. Hour markers are bronze Roman numerals. Minute lines inscribed in limestone curbing. The gnomon itself is a moveable pole that is set on an AM or PM daily curve. NASS member P. Kenneth Seidelman was instrumental in correcting this design in 1978.
General Information:
  • Owner: Longwood Gardens, Inc.
  • Designer: Knowles R. Bowen
  • Builder: Pierre S. du Pont
  • Construction Date: 1939
  • Sawyer, Fred. 'Of Analemmas, Mean Time and The Analemmatic Sundial - Part 1', BSS Bulletin, 94.2 (June 1994), pp. 2-6, and 'Part 2', in 95.1, (February 1995, pp. 39-44.

Last Revised: 6/27/2012 15:25