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.

Baltimore Maryland USA Analemmatic Dial 843
Volunteers painted a 16 x 5 foot analemmatic dial for the elementary and middle school students. The dial has 8-inch circles for hour numbers from 5am to 7pm using standard time. The dial walkway is painted with yellow month lines and abbreviations for each month to the side. The words "summer" and "winter" are at the solstice lines. Bailey points are painted as small yellow circles to indicate the direction of sunrise and sunset from the observer's position on the walkway.
Ocean Shores Washington USA Horizontal Dial 842
This large horizontal dial has a gnomon in the shape of an anchor and concrete minimalist dial surface in the shape of a triangle, keeping the theme of the location "Triangle Park". Three time Arabic hour numbers of 9, 12 and 3 are embedded into the concrete slab and two other time marks of 6am and 6pm are on separate pads located outside the main dial area.
Milwaukee Wisconsin USA Vertical Dial 841
This large vertical south facing sundial is fabricated from aluminum. Eight slender hour lines delineate the time. At the top of the hour lines along the winter solstice are acrylic numbers on the circular hour plates showing time from 10am to 5pm. At the bottom of the hour lines along the summer solstice are additional acrylic numbers showing daylight saving time from 11am to 6pm. A short horizontal bar shows the equinox.
Sheridan Wyoming USA Horizontal Dial 840
This monumental horizontal dial is 15 ft. in diameter sitting on a foundation of poured concrete and rebar. The dial face is etched on 4 large granite slabs from Canada. The gnomon is a 6-inch diameter steel pipe 97inches tall with a welded nodus ball and a triangular sheet beneath the gnomon that has a sun and the school logo (a mountain range) cut into it casting projected images onto the sundial face.
Twin Falls Idaho USA Analemmic Equatorial Dial 839
This beautiful stainless steel equatorial is approximately 1m in diameter with brass inlay for the equatorial time, divided down to the minute. This is also an analemmic sundial where the brass gnomon is cut out in the shape of an analemma allowing the user to directly correct for the equation of time. The analemma is marked with 365 individual date marks.
South Lee Massachusetts USA Vertical Dial 838
On the transom of a brown wood shingled and stone building that looks like it once was a church is a vertical south declining wooden sundial about 2 x 2 feet square. The sundial is painted red with a nicely cut wood gnomon. Hour lines and Roman numerals from VI to VI are chiseled into the wood, along with an inscription. The dial is framed in wood as well but the contrasting grey paint is flaking off.
Bloomfield Hills Michigan USA Horizontal Dial 837
In the Cranbrook Gardens, where works of art topiary and American crafts are displayed, one can find a brass horizontal dial transformed into a beautiful sculpture of a swan with the tail serving as the style, and the hour lines are the feathers of the wings. A small circle with Arabic numbers delineates the hours.
St. Louis Missouri USA Horizontal Dial 836
A horizontal sundial made on an octagonal brass plate, measuring 12 inches from side to side. The engraved hour lines are divided with marks for half, quarter and eighth parts of the hour. The hour numbers themselves are outward facing Roman numerals. The brass gnomon is bent slightly to the west by vandals. The pedestal is 37.5 inches tall with a 17 inch circular top cap of pink marble. Unfortunately the dial is located near a tree, so it is in shade for part of day.
State College Pennsylvania USA Analemmatic Dial 835
A simple analemmatic dial about 12 feet across. Square unmarked flagstone or pavers mark the hours. The walkway has a concrete base covered by the same flagstone or pavers. The walkway months are embossed in the stone.
Lucedale Mississippi USA Analemmatic Dial 834
This analemmatic dial (sometimes called a human sundial) is designed for children. Approximately 16 ft wide, it is constructed of red brick with steel hour marks. The numbers for standard time are large silver and the numbers for daylight saving time are smaller and black. A black steel walkway is located in the center of the dial with embossed months of the year. Children stand on the month. Their shadow marks the time. Large numbers are standard time. Small numbers are daylight saving time.
Ottawa Ontario Canada Horizontal Dial 833
A garden variety round horizontal sundial about 12 inches in diameter. It looks like a bronze casting with iron staining from steel bolts. Hours marks only from VI to VI (6 am to 6 pm). The dial is located in a very shaded spot close to a building and surrounded by trees. Ornamental. Dial plate has inscription "Tempus Omnia Revelat" (Time Reveals All).
Hanover New Hampshire USA Vertical Dial 832
This octagonal vertical sundial is mounted on the due south facing wall of Shattuck Observatory. The dial is painted on wood. The hours are VI to VI (6 am to 6 pm) with lines for half and quarter hours. The thick triangular gnomon is rigidly mounted on the dial face. The dial is in excellent mechanical condition but the paint is flaking badly due to sun and weather exposure.
Portland Maine USA Equatorial Dial 831
Prominent in the cemetery is a large equatorial sundial about 4 ft in diameter. The dial was custom built for the location latitude and longitude. It is made of cast, anodized aluminum. The equatorial ring is 8-inch side arc with Roman numeral hours from VI to VI (6am to 6pm) with marks at 5 minute intervals. The scale is shifted to correct for longitude. The gnomon is an elegant arrow. It sits on a 4 ft plinth made of river stone, capped with a circular 6 inch block of polished granite.
Brunswick Maine USA Horizontal Dial 830
In the shade of many trees is a 12 inch circular horizontal sundial sitting on a square granite plinth. The dial plate shows solar time with Roman numerals V to VII (5am to 7pm). Half and quarter hours are shown with dots.
Falmouth Maine USA Armillary Dial 829
This bronze armillary sundial is about 18 inches in diameter. The prime meridian ring is embossed with an intricate design. A different designed with forward and backward "S" adorns the exterior of the equatorial ring while the interior has embossed Roman numerals for the the hours. The 6-hour ring is plain and there is no horizontal ring. The arrow gnomon rod is at the correct slope but the dial is free to turn on its base so that it is not oriented north.
Stanbridge East Quebec Canada Horizontal Dial 828
The sundial is a 10-inch circular bronze horizontal dial engraved with hours in Roman numerals from IIII to VIII, (4 am to 8 pm) and marks for the half and quarter hours. A compass rose shows 32 compass points. Unfortunately the gnomon is missing. It was originally fastened by two weak screws. Attempts to solder the gnomon in place failed.
Ottawa Ontario Canada Horizontal Dial 827
This sundial is a memorial for W T Macoun. The dial is a simple bronze horizontal sundial, about 12 inches in diameter. It shows solar time with hour lines from 4 am to 8 pm. Hour marks are Roman numerals. The design accounts for the thick gnomon. The stone octagonal base is about 40 inches high
Kokomo Indiana USA Equatorial Dial 826
This is a hammered wrought iron equatorial sundial approximately 30 inches in diameter with a 6 inch equatorial band. The gnomon is a thin rod bracketed by an iron slit that is manually rotated to allow a bright beam of light to surround the shadow time-telling mark. The dial is designed to show local solar time, and requires the Equation of Time to correct for the tilted earth’s rotation axis and its eccentric orbit around the sun.
Tucson Arizona USA Analemmatic Dial 825
This nearly 14-foot wide analemmatic human sundial replaces the previous sundial at the same location. The previous dial by an unknown designer had several design errors and was in poor condition. The Flandrau Planetarium replace it, choosing a sundial with a blue background and white hour numerals. Dial Markings include quarter hour marks, Solar Noon Mark, Date Line with one week marks, Alignment Marker for Sunrise and Sunset (Bailey Points) with Solstice and Equinox lines, and the four Cardinal Points of the compass. The dial has a built-in longitude correction and shows Mountain Standard Time when readings are adjusted for The Equation of Time
Santa Cruz California USA Globe Dial 824
This is a globe dial with a twist: a glass sphere is used to represent the earth with continent lines scribed on the globe along with hour lines, analemma figure for each hour, tropic of cancer, tropic of capricorn, equator, and a line representing the local horizon. The globe is etched with the dial site at the globe's zenith. The dial has a central gnomon. When the shadow of a pointer falls on the gnomon the time is read using the correct side of the hour line analemma.