Sundials - World's Oldest Clocks

North American Sundial Society

Selected Sundials of North America

This is a selected listing of sundials in the North American Sundial Society Registry. Click on any dial thumbnail picture or city name to display the full dial description with additional information and images.

 

Rhode Island

 
Providence Rhode Island USA Noon Mark or Meridian Dial Dial 949
At first glance this is a gleaming stainless steel sculpture 15 feet long by 4 feet high in the shape of a Mobius strip. Although it fits its name "Infinity Possibility", it also contains a meridian noon mark sundial. At the south end of the Mobius, high up on its curved surface is a hole to allow the noontime sun to create a beam of light that hits a lower portion of the Mobius strip. Engraved on the strip is an analemma adjusted for the longitude of Brown University that shows date and civil time throughout the year. The analemma has monthly markers and is delineated with ticks every 5 days.
 
 
Pueblo Colorado USA Sun Alignment Dial 200
Stonehenge type dial designed by Judy Guttormsen and built in 1984 . Stonehenge itself an amphitheater. If you stand on a brass marker in the center of the stage, on the solstices and equinoxes, you can observe the rising and setting of the sun aligned with metal posts viewed through slits in the wall. At the south edge of the site is a 6 foot horizontal dial laid out in the concrete floor. There are two rings of numbers, one for standard time, one for daylight time. Not corrected for longitude, but the location is very close to the center of the time zone. The gnomon is cement and is unusually thick (approximately 40 cm), making it very sturdy, presumably to prevent vandalism. The surface of the gnomon is very rough, having embedded pebbles, making it an uncomfortable place to sit or climb. The metal inscription plate on the gnomon has faded too badly to read. The site also has a North Star finder made of wrought iron and has a small bench for children to use.
 
 
Puerto Penasco Sonora Mexico Analemmatic Dial Dial 600
A concrete analemmatic dial set in the El Camaronero Plaza on the Sea of Cortez. The dial is 20 feet E-W across the hour markers. The dateline displays the 1st, 10th and 20th of each month. Dial includes 34 minutes longitude correction. Instructions in Spanish and English are displayed nearby.
 
 
Punta Gorda Florida USA Horizontal Dial Dial 721
A monumental sculpture of steel and stone including a 12 foot diameter horizontal dial with six foot high gnomon. Stone dial face includes hour markers and Roman hour numerals. Titled Spirit of Punta Gorda, the sculpture is dedicated to the spirit of the people of Punta Gorda in the aftermath of Hurricane Charlie on August 13, 2004. Two nearby bronze plaques identify and dedicate the sculpture.
 
 
Quebec Quebec Canada Vertical Dial Dial 87
Vertical dial on a board, about 1.5m high by 1 m wide. White with red lettering. It is placed above a doorway on an interior courtyard of the old Seminary, founded in 1663 by Mgr de Laval. The building now houses the architecture school of the Laval University. Although the school and Seminary buildings are private, access is available to the courtyard.
 
 
Queens New York USA Sculpture/Artwork Dial 592
A 6 foot diameter bronze sculpture reclined 50° (latitude is 40° 45' N) with slit gnomon and hour marks. Gift of Joan and Richard Scheuer in 2000. More sculpture than sundial, it does have some hour marks but reclines and appears to be out-of-plane.
 
 
Queens New York USA Vertical Dial Dial 409
A 20 foot high x 15 foot wide x 4 foot deep painted aluminum vertical dial entitled '"Winged Shadows." Has declination lines for the solstices and equinoxes. Declines west. On the back wall of the Main Building. Can be viewed from Woodside Ave. Designed by Robert Adzema in 1987.
 
 
Queens New York USA Vertical Dial Dial 246
A vertical dial on the cupola above the main entrance. Declination 70° 12' 04" E. Painted all white so that no hour lines can be seen.
 
 
Queens New York USA Horizontal Dial Dial 247
Paul Manship was commissioned to make the sundial for the 1939 World's Fair in New York. The dial was named "Time and the Fates of Man." Manship wrote, "The Perisphere and Trylon at the World's Fair suggests to me measurements of time and space, so my sundial… relates to the background of the central motif of the Fair." His white plaster sculpture was the biggest sundial in the world, standing 80 feet tall.
 
 
Quincy Illinois USA Analemmatic Dial Dial 784
A 10 foot x 18 foot analemmatic dial built of Keystone Blue granite from the quarry in Elberton, Georgia. Hour markers for 7 AM to 5 PM show Arabic numerals and identify the organizations donating to fund the dial. Each hour marker depicts the morphology of a leaf from a tree located in the nearby arboretum. The hour markers are 15 inches in diameter and 6 inches thick, weigh 102 pounds each and are placed flush with the soil to reduce potential for vandalism.
 
 
Raleigh North Carolina USA Horizontal Dial Dial 864
Known as the Primrose Sundial, the bronze dial plate is a little more than a foot in diameter and sits on a small stone pillar about four feet high. The dial has simple hour lines from 4am to 8pm marked on the hour in Roman numerals. The open bronze gnomon is about 1/2 inch thick, held by both tenon and two large screws.
 
 
Randolph City Vermont USA Armillary Sphere Dial 266
10 foot Cor-ten steel, concrete Entitled: Armillary VII. Contains an ecliptic ring, an equatorial ring and a gnomon ring. Engraved with the signs of the zodiac.
 
 
Redding California USA Horizontal Dial Dial 518
When is a bridge not a bridge? When it's almost a sundial. The 217 foot high suspension span called Sundial Bridge wants to be a sundial, and has come very close. The suspension pylon is aligned true north, but unfortunately performs as an inaccurate gnomon with an inclination of 49 deg (for bridge functionality) rather than for the 40.6 deg latitude of the site. The bridge is 700 feet long and weighs 1,600 tons. Funding for the bridge comes from the McConnell Foundation, Redding Redevelopment Agency, Federal Highway Administration, and Turtle Bay Exploration Park
 
 
Redlands California USA Equatorial Dial Dial 293
Equatorial dial designed by Russ Busher. A semicircle of metal, pierced with numerals. Sun shines through numerals onto metal plate with vertical line mounted below. Semicircle in equatorial plane, plate in polar plane. Such a dial is frequently advertized in "Wind and Weather" catalog. Placed atop a wooden post.
 
 
Redlands California USA Vertical Dial Dial 658
A 60x40 foot vertical dial of stucco, wood and brass, filling the south exterior wall of the building. Roman hour numerals show PST; Arabic hour numerals show PDT. Summer and winter solstice and the equinox lines are shown; the shadow of a nodus on the gnomon indicates the date. Dr. Nordgren explains that the shadow of the 10-inch diameter nodus "is just the right size to take into account periods when sundials are fast or slow relative to clock time. When dials run their slowest, the leading edge of the nodus shadow gives the accurate time. During periods when dials run their fastest the trailing edge gives the accurate time." Dr. Nordgren was among the seven designers of the sundials used on the NASA Mars Rovers in 2004.
 
 
Regina Saskatchewan Canada Vertical Dial Dial 878
This vertical dial is mounted directly onto the stucco wall of the house. The gnomon is a triangle of aluminum cut from 3/16 inch sheet, with a 2-inch hole as a breather to relieve stress from cross winds. More interesting are the hour lines, made of a double strand of heavy copper wire, with each extending from winter to summer solstice, held with pegs (from Canadian Tire). A middle peg shows the equinox as well. Hour lines extend from 7am to 6pm, shown in simple Arabic numbers. The sundial is operational in clear weather from 8:30am - 6pm through all seasons.
 
 
Rehoboth Beach Delaware USA Horizontal Dial Dial 321
A bronze horizontal dial about 18 inches in diameter. The sundial was designed by Col. W.S. Corkran in 1930 and placed in the Homestead House garden, a 3 1/2 acre site maintained by the Rehoboth Art League since 1938. Col. Corkran died in 1962. The sundial was restored in 1999, set atop a capstan from an old sailing ship. Since 1999 the salt air has continued to deteriorate the plaques and gnomon. The dial face is still quite readable, with Arabic hours from 6am to 6pm delineated in 5 minute intervals. Symbols of the zodiac decorate the dial in a circular arc.
 
 
Renton Washington USA Horizontal Dial Dial 524
A 44 x 60 foot horizontal dial with 20 foot tall stainless steel gnomon. This may be the largest horizontal dial in the state of Washington. Five colors of concrete define distinct parts of the dial and pathways (the 8 o?clock and 5 o?clock hour lines are walkways between buildings). Other hour lines have concrete benches and stainless steel discs to mark each hour, plus inlaid bronze discs for daylight saving time. Hour lines have inset disks to indicate the hour, one disk for each counted hour 6 AM to 7 PM. The mid-day N-S hour line features thirteen hour disks; the previous hour has 12 disks and the next hour is marked with two disks. The N-S hour line may include one disk that is also a light to illuminate the gnomon at night.
 
 
Reston Virginia USA Analemmatic Dial Dial 773
An analemmatic dial with 8 foot semimajor axis painted on the asphalt playground of the Neil Armstrong Elementary School. Hour marks for 5 AM to 7 PM include longitude correction; Arabic hour numerals for both standard and daylight saving time are shown. The date line is decorated in bright colors with icons symbolic of holidays and seasonal weather. The dial was the Boy Scout Eagle Service Project of William T. Spriggs and was painted by local Boy Scouts and their fathers.
 
 
Reston Virginia USA Horizontal Dial Dial 369
A modernistic seven foot diameter flagstone horizontal dial with hour lines. The design features a gnomon of folded stainless steel plate. Gnomon is truncated too short for shadow to reach edge of dial face. See "Sightings" in NASS Compendium Vol. 6 No. 4, Dec 1999.
 
Cookies make it easier for us to provide you with our services. With the usage of our services you permit us to use cookies.
More information Ok