Sundials - World's Oldest Clocks

North American Sundial Society

Sundials of North America

This is a complete listing of sundials in the North American Sundial Society Registry. Click on any dial thumbnail picture or city name to display our complete listing and images. To see sundials in a particular state or province, you may click on the list at left to see all registered sundials in that state, province or country (at bottom) displayed in city order.

Pomfret Connecticut USA Pillar Dial 84
A 22 ft. high stone pillar dial built by William Ross Carpenter as a replica of the famous Charles Turnbull dial of Corpus Christi College in England dating from 1577. The pillar has multiple dials of various types. The Carpenter replica built in 1912 was restored in 1987. Ornate dial furniture with multiple inscriptions. A complex masterpiece. See the NASS Compendium Vol. 2 No. 1 for more details.
Newington Connecticut USA horizontal Dial 83
Bronze horizontal ring, suspended by curved semi-circles, with gnomon rising from the center toward the North. " can see resemblances to an anchor, a gimbal, and a mariner's compass" says designer Searle Lansing-Jones.
San Francisco California USA Horizontal Dial 82
Built in 1913 as a promotion for a housing development that was once a racetrack, this dial boasted (incorrectly) that at 34 feet in diameter and 28 foot gnomon it was the largest dial in the United States. Nevertheless it gathered much publicity and newspaper articles of the day showed young girls dancing around a small pool that surrounded the gnomon. Bronze statues of porpoise were said to be in the pool. Today the statues are gone and the pool is green painted cement. Still, an interesting dial to visit.
Aurora Colorado USA Equatorial Dial 81
A large Erickson Monument equatorial polar dial 6 feet in diameter made of light granite with a 3 inch steel rod as gnomon. The dial was dedicated as part of the bicentennial celebrations in July 1976. Hour lines from 4am to 8pm. Time is graduated by half-hour, quarter hours and 5 minute marks. Designed to be read from the upper surface in Spring/Summer, from the under side in Fall/Winter. A plaque provides the Equation of Time to convert solar time to watch time. Dial has both the bicentennial emblem and the city seal of the city of Aurora.
San Diego California USA Vertical Reclining Dial 80
This dial was originally owned and installed at Sea World in San Diego but was sold and purchased by Verlyn Kuhlmann. A 39 inch diameter reclining vertical dial of cast concrete with a 20 inch long steel gnomon. Dial reclines about 50°. Includes cast hour lines with Arabic numerals and longitude correction. A separate plaque provides instructions and an EOT graph. The dial is mounted on a 24 inch square aluminum base plate and short column support.
San Diego California USA Armillary Dial 79
An armillary dial 55 in. diameter designed by L. Gordon Plummer. Rings made of 1/75x2 in. hollow steel hoops. Possibly gone now. Member Woody Sullivan unsuccessfully attempted to locate this dial in 1992.
Huntington Beach California USA Vertical Dial 78
A 7x8 foot direct south facing vertical dial of wood with metal gnomon on the masonry stucco side of a fire station building. Hour lines are painted on wood planks bolted to the side of the building. Metal Arabic DST hour numerals are mounted to the wood planks. Longitude correction is not included and there is no EOT correction or instructions offered but dial is accurate when both corrections are applied. When built in 1978, the hour numerals marked Standard Time; when rebuilt sometime before 2010, the new hour numerals now mark daylight saving time. The fire station building wall declines approximately 18.5? east of south but the wall area holding the dial has been built out to correct (perhaps not quite enough) this angle.
Los Angeles California USA Equatorial Dial 77
A bronze equatorial ring dial with taut wire gnomon on concrete pedestal. Ring is inscribed with hour, ten-minute and minute lines. Plaque states the dial indicates correct watch time so observatory staff periodically rotates clamped ring to correct for EOT, longitude and DST. Dial is located adjacent to the Astronomers Monument atop which is a large bronze armillary. The monument recognizes Hipparchus, Copernicus, Galileo, Kepler, Newton and Hershel. The sundial was originally built into the base of the Astronomers Monument but was relocated a few feet to the south during the 2002-2006 remodeling to allow visitors to more closely approach the dial. The dial sits atop a concrete pedestal.
Death Valley California USA Vertical Dial 76
Prospector and con man Walter Scott convinced Chicago millionaire Albert Johnson to invest in his gold mine in the Death Valley area. The mine was a fraud, but Johnson began building his Spanish Revival Villa in 1922 that continued until the stock market crash of 1929. Martin de Dubovay was the architect, Mat Roy Thompson was the engineer and head of construction, and Charles Alexander MacNeilledge was the designer
Tempe Arizona USA Equatorial Dial 75
An equatorial dial designed by R. Newton Mayall with a "curved triangular gnomon over a curved face approximately 1ft. wide. Tells the day of the year and standard time noon." Has a plaque explaining the Equation of Time.
Seattle Washington USA Analemmatic Dial 74
27' Bronze, concrete Viewer becomes the gnomon. As of 1994, structure is unstable and corroded. Badly in need of refurbishing. Press release w/quotes from designer on file.
Williston Vermont USA Horizontal Dial 73
Pyramidal shape. Markers trace the paths of the shadows cast by the top of the pyramid on solstice and equinox days. Originally at the Brattleboro Museum, it was moved to its present location in 1993.
Swanton Vermont USA Horizontal Dial 72
Cedar wood 10' cedar pole covered with copper tiles forms the gnomon. Flowers and an evergreen hedge mark shadow paths of equinoxes and solstices. IAPS Listing survey May 1992. Some hour markers missing.
Johnson Vermont USA Horizontal Dial 71
One of Kate Pond's first dials, a winning design for an 18 foot diameter dial that now resides on the Johnson State College green. Concrete, Stainless Steel. On the ground concrete paths mark the N-S and E-W axes. The gnomon is a 3 inch stainless steel pipe 9 feet long attached to a concrete base. The hours are marked with 1 foot diameter Vermont granite stones, and at the cardinal points are larger stone markers. Kenneth Leslie, Assistant Professor of Art, remarked, " I have the idea of a student sitting against the North marker, reading a newspaper for a noon class, and knowing it's time to leave when the shadow crosses his paper."
Jerico Vermont USA Horizontal Dial 70
50 foot diameter horizontal dial of steel, concrete and stone. Called "Polaris". The gnomon is 10 foot high forming a stone pyramid. As the sun shines through a hole at the center, an analemma is traced on the ground. Markers identify equinox sunrises and solstice sunsets. The dial was built by Kate Pond and her students. See NASS Compendium Vol 1, No. 2, May 1994.
Toddsbury Virginia USA Horizontal Dial 69
Houston Texas USA Dial 68
Large gnomon with a lens which focuses the noonday sun near the equinoxes. Hour lines built to compensate for equation of time.
Amarillo Texas USA Gnomonic Dial 67
The Centennial Time Tower begins as a tetrahedron of stainless steel pipes each 18 feet long. Then a central pipe towers to the sky, giving an overall height of about 50 feet. The Time Tower is situated on a circle about 100 feet in diameter. The dial was erected for the hundredth anniversary of the discovery of Helium. Each individual pipe is a time capsule filled with helium. The plaque under the center of the tower shows when each one is to be opened.
Trois Rivieres Quebec Canada Vertical Dial 66
A declining vertical dial approximately 6 feet wide and 8 feet tall of painted wood. Diol declines 58? west of south. Dial includes a two-lined analemma noon mark that shows noon corrected for EOT. Hour lines with Roman numerals show local time from 10 AM to 7 PM. Dial is located about 30 feet high on a wall, above an alcove with a statue of the Virgin Mary. The gnomon length is correct for the shadow of the tip to fall on the noon mark. Dial furniture includes a lunar crescent and a depiction of a beaver carrying a tree branch, in a classic French tradition and similar to dials of Zarbula's overall design.
Stanstead Quebec Canada Horizontal Dial 65
A horizontal dial "sculptural triptych" called "Zig-Zag". Three steel pipes 8x15x13 feet define the sundial. The shadow from its highest point will run along the lower horizontal section exactly E-W at the equinoxes. Stainless steel bolts on the horizontal section serve as hour markers to that time is recorded throughout the year, with the first section of the zigzag serving as the gnomon. The dial-sculpture was funded in part by a 1991 award of a Vermont Community Fund Grant. See NASS Compendium Vol. 1 No. 2, May 1994