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.

Palo Alto California USA Horizontal Dial 900
This horizontal bronze dial is 14.5 inches in diameter, mounted on a fluted pedestal. The gnomon angle is set for the latitude and is 5 5/8 inches tall. Graceful hour lines extend from 5am to 7pm marked by Roman numerals. It is delineated only with half-hour lines. Surrounding the dial face is a zig-zag decoration.
Santa Cruz Island California USA Vertical Dial 899
This vertical dial has undergone a number of restorations since it was set in lime in 1889. A photograph from 1900 shows the placement of a gnomon rod is horizontal. In 1992 before the National Park Service restoration in 2012 the gnomon is set in a polar orientation. But it doesn't really matter since the hour lines are marked at nearly regular 15 degree intervals with half hour sub-marks.
Webster Groves Missouri USA Horizontal Dial 898
This horizontal sundial is mounted on a hexagonal graceful concrete pedestal 43 inches high. The top of the pedestal is slightly sloping hexagonal 17 inches on a side. The circular bronze dial at the center is 11 inches in diameter. The hour lines meet a chapter ring with time marked in 15 minute intervals. Roman numerals mark the hours from 6am to 6pm. The 5 1/2 inch gnomon is of badly rusted steel, with iron stains covering the central part of the dial face. The sundial was vandalized at some time in the past and the original gnomon stolen.
Frankenmuth Michigan USA Vertcal Decliner Dial 897
The dial is elegantly painted on the south wall declining 30 deg west. Dial shows daylight savings time using dark red Roman numerals on a golden ribbon banner. The gnomon is a simple rod held firmly to the wall by an ornate bracket. Above the dial is a large smiling sun surrounded by a sky blue band.
Frankenmuth Michigan USA Armillary Dial 896
This is a mass produced armillary dial held at the latitude of Frankenmuth by the statute of a boy with raised arm. All this sits on a pedestal with a Greek motif. The meridian circle made of iron is about 2 feet in diameter. The equatorial band is about 3 inches wide with some corrosion present. Inside the equatorial there appears to be an aluminum interior band of Arabic numbers riveted to the equatorial. Hours and half hours are marked by dot bumps in the aluminum. There is an iron latitude ring for decoration. The bronze gnomon extends the meridian circle with both an arrow point and feathered tail.
Opp Alabama USA Equatorial Dial 895
An equatorial sundial made of diesel engine parts by the students of Lureen B. Wallace Community College, under the guidance of Eddie Spann, instructor for diesel and heavy equipment and designed by the college president, Dr. Herbert Riedel. The stand is a crankshaft from a Cummins engine, while the dial base and dial faceplate are flywheels. The gnomon is a heavy duty diesel cylinder liner puller. The gear teeth on the faceplate mesh with a small gear to allow easy adjustment for the equation of time. Hours are marked by bolts, and on the winter side are painted hour numbers.
Andalusia Alabama USA Reflective Equatorial Dial 894
This dial is one of Bill Gottesman's uniquely designed Renaissance dials of cast and structural bronze with a 27 inch diameter time telling helix whose axis is aligned to the celestial-north pole. Time is told by a focused beam of light from a long cylindrical unsilvered mirror situated on that N-S axis, reflecting sunlight into a slit of light onto the helix, telling time throughout the day. A sliding time scale within the helix is adjusted for longitude, date's equation of time correction and daylight saving time. Once this scale is adjusted for date, the dial shows civil (local clock) time with an accuracy of under one minute. The dial base is cast bronze that allows adjustment for latitude and is placed on a sandstone plinth.
Opp Alabama USA Equatorial Dial 893
This 2-foot diameter equatorial disk is of quarter-inch aluminum plate with hourly time marks cut through with slots. Shorter slots mark half our and fifteen minute intervals. The noon mark is surrounded by short holes made at five minute intervals. At the top of the dial is a cut fleur de lis.
Grand Rapids Michigan USA Analemmatic Dial 892
The brightly colored analemmatic dial is approx 10.5 feet in diameter, surrounded by a ring of alternating red and white concrete with cardinal points. Time marks are set in a ring of black concrete, with large engraved hour numbers. Time is adjusted for daylight saving time.[Note that to tell time correctly, the time marks should be set on an ellipse.] The walkway for standing to cast your shadow has monthly names impressed into the concrete.
St. Louis Missouri USA Horizontal Dial 891
This horizontal sundial is part of a sculpture set, formed as a lily pad, and surrounded by three circular flowers with centers that are small water fountains (no longer working). The dial face is no longer flat and the graceful gnomon does not point true north. There is a short cylinder at the end of the gnomon with a hole, perhaps for casting a beam of light on a certain day. The hole is at a 34.4 deg angle, aiming toward the slot in the dial face. Now, the dial is located in dense shade preventing operation.
Palo Pinto Texas USA Horizontal Dial 890
The 21 inches in diameter sundial started as a sculpture. A call went out to the boy and girl scouts (and alum men and women) to contributed fossils, and other artifacts. This included an arrowhead found at camp. These objects were incorporated into the finished wax, with the arrowhead embedded on the style edge at the very tip of the gnomon. A mold was taken of the completed sculpture and used to create a casting wax replica of the sculpture.
St. Louis Missouri USA Horizontal Dial 889
Sitting on a classic sundial pedestal is the Concordia sundial made of thin bronze plate in the shape of a hexagon about 8 inches between opposing sides. Hour lines radiate from where a thick gnomon would have stood, with Arabic numbers from 4am to 8pm counting the hours. The gnomon had gone missing in 2009 when the dial was vandalized. A new gnomon fitting the position of the old was designed by Don Snyder of St. Louis and made of bronze plate by William Turner of Turner & Associates, a metalworker also of St. Louis.
Monegaw Springs Missouri USA Compass Dial 888
This compass is carved in rock showing cardinal points. For some reason the N mark is backward and a W mark is upside down. A surrounding circle of 10 inches in diameter defines most of the compass. A smaller circle encompasses the letter N and a partial circle carved from the center is approximately 4 inches in diameter.
Natchez Mississippi USA Horizontal Dial 887
In 1716 the French built a fort on the bluffs of Natchez and named it Rosalie in honor of the Countess of Pontchartrain. In 1820 Peter Little, who came to Natchez from Pennsylvania in 1798 at the age of 17, purchased a portion of that land on which to build his home. He decided to keep the name Rosalie in honor of the fort and its settlers. The mansion and land was purchased in 1938 by Mississippi State Society, Daughters of the American Revolution.
Ridgeland Mississippi USA Vertical Dial 886
This is a small 7 x 10 inch vertical dial declining due south. It is made from wood with hour lines, half hour lines, and Roman numerals engraved using a wood burning tool. The simple gnomon is 1/8 inch steel.
St. Louis Missouri USA Obelisk Dial 885
The obelisk is constructed of North Carolina pink granite. At the base it is 18 x 16 inches and soars 18 feet into the sky. The obelisk displays a cross in its own shadow at solar noon on three days each year – the vernal equinox on about March 21, the summer solstice on about June 21, and the autumnal equinox on about September 22.
Wills Point Texas USA Horizontal Dial 884
This starburst sundial is 6-3/4 inches in diameter, made of 1/8 inch aluminum plate. The dial is actually set in a 12-point compass rose, showing the azimuth every 30 degrees. Time marks are every 15 minutes with hours in Arabic numerals. All marking, latitude, longitude, and inscription are engraved into the dial plate.
St. Louis Missouri USA Horizontal Dial 883
The circular bronze dial sits on an iron pipe, surrounded by a picket fence and protected from the elements by a brass hood. It is a nearly identical dial to the one at the St. Louis Arsenal (NASS dial #847), and was manufactured in the same year, 1859. It is likely that master armorer N. Engels, machinist A. Schaedel, and engraver W. Hawksley created this dial.
Perryville Missouri USA Horizontal Dial 882
The square 14.5-inch dial is made of while milk stone with graphics highlighted using lithochrome paint. The gnomon is made of stainless steel 303-alloy and has the letter P held between the base and style. The dial sits upon a square frustrum pedestal 3-feet tall, 24-inches square at the base, tapering to 17.5-inches at the top. The pedestal is supported on a 32-inch square base.
La Canada California USA Equatorial Dial 881
The bronze equatorial dial is about 24" diameter, and has equatorial, meridian and horizon rings. It sits on top of a stone pedestal. The equatorial ring is supported by 24 spokes, spaced at 15 degrees. Around the rim 24 hour numerals in Arabic. The twelve signs of the zodiac are spaced every other hour on the equatorial rim. The orientation to true north and inclination were verified to be correct for the site. The sundial was a gift from the Kresser Smith family to the Descanso Gardens Guild in 1987 on the occasion of the guild's 30th anniversary.