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.

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
University Park Pennsylvania USA Armillary Dial 64
A bronze armillary dial with meridian and equatorial rings and Arctic and Antarctic circles on a stone pedestal.
Oberlin Ohio USA Calendrical Dial 63
When is a flag pole more than a flag pole? When it has cement walkway curved for the summer solstice, a path for the winter solstice and a distinguishing straight cement line for the spring and fall equinox. This dial has no hour markers, and is intended to show the seasons. The tip of the flag pole will follow these lines at the appropriate day of the season.
London Ontario Canada Helioscope Dial 62
A brass Pilkington-Gibbs heliochronomer aligned to the celestial equator. Rotate the helioscope until the sun shines from the upper hole to the lower plate, then read the time from an accompanying dial. The Pilkington-Gibbs dial includes a patented cam mechanism to adjust for the Equation of Time.
Great Falls Montana USA Equatorial Dial 61
A monumental bow-string equatorial dial of curved 4x6 inch welded steel I-beams forming a 14 foot diameter equatorial arc. Stainless steel Roman hour numerals 5 AM to 7 PM are welded to the arc. Metal for the dial was once used at Rainbow Dam and was formed and welded at Rainbow Powerhouse. This dial was the inspiration of Gary Trescott, a River's Edge Trail volunteer who planted hundreds of trees along the trail and helped improve the trail for many years. Gary died in June 2012 but his work on the sundial was continued by Dana Woodward (Gary's cousin), Doug Norwick and others.
Rochester New York USA Equatorial Dial 60
A large 40 foot equatorial dial. The dial band is about 5 feet wide with raised Roman numerals at each hour mark. The gnomon is a rod approximately 15 feet long, ingeniously suspended by wires at the center of the dial. No shadow of the support wires can be seen, just the line of the gnomon appears on the dial band.
Mineola New York USA Horizontal Dial 59
ca 30' diameter circle Concrete, with metal hour lines and Roman numerals Very large horizontal dial at ground level. Donald E. Axinn (a builder) donated it to the county. He and Gencorelli designed it. The gnomon was originally positioned incorrectly but has since been moved to the proper position. However, it is wrongly oriented, with a bearing of 342 degrees rather that true North.
Albuquerque New Mexico USA Polar Dial 58
Of copper, with gem quality smoky quartz crystal at tip of gnomon. Parallel to earth's axis, on vertical wall.
Albuquerque New Mexico USA Vertical Dial 57
Aluminum & Copper Of light gauge aluminum and copper on stucco wall. 3x4'.
Albuquerque New Mexico USA Analemmatic Dial 56
5.5' stile, hour lines marked by 1/2' wire rope on grade. Total area is about 1000 square feet
Highland Park Illinois USA Horizontal Dial 55
A cast bronze horizontal dial with hour, half-hour and quarter-hour lines and Roman hour numerals for 5AM to 7PM. Dial face symbol depicts a winged hourglass.
St. Louis Missouri USA Vertical Dial 54
This modernistic vertical south declining dial was designed by Mel Meyer and installed in 1989. The dial is an 8 by 10 foot stainless steel sundial with ribbed hour lines. No numerals are used. The gnomon is a solid triangle 3.5 inches wide by 85 inches high.
Brunswick Maine USA Vertical Dial 53
A set of three declining vertical dials each approximately 3x4 foot of carved Indiana Limestone set into the east, south and west facades of Hubbard Hall. Dial faces include hour lines and Arabic hour numerals. Each bronze gnomon rod is additionally supported at its end. The dials are not corrected for longitude and there is no EOT correction provided. With corrections, all three dials tell accurate time. The building south wall declines approximately 18? west of south.
Bar Harbor Maine USA Vertical Dial 52
A vertical west-facing dial.
Gaithersburg Maryland USA Compound Polar Dial 51
Briggs Commemorative Sundial. One of the more complex and elaborate ones in the US. The dial plate lies parallel to the earth's axis of rotation. The dial has three gnomons. The upper and lower point out Eastern Standard time, the middle one indicates local apparent (solar) time throughout the year. A copy of the brochure is in the NASS Archives.