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.

 
 
Villahermosa Tabasco Mexico Multiple Dials Dial 380
A "Gnomonicon", or multi-indication dial, made of concrete, aluminum, brass and copper. The dial stands approximately 5 feet high and has multiple solar time dials in many orientations plus a flat equatorial, a concave equatorial, a revolving equatorial and a rare spherical dial. Also a solar calendar and representations of the ecliptic and the zodiac.
 
 
Ypsilanti Michigan USA Vertical Dial 379
A 10x15 foot vertical wall dial. On a stucco wall, the dial is tile with an aluminum gnomon. This dial atop Sherzer observatory is scheduled for repainting and renumbering. A new and larger brass gnomon is in the works as well. The newer campus landmark is visible from as far away as Wasahtenaw Avenue.
 
 
Westminister Vermont USA Horizontal Shadow Plane Dial 378
A large shadow plane approximately 10 ft across with a nylon cord for a gnomon. Hour points are painted on the dial. To read local apparent time on this sundial, the user must hold the gnomon cord taut and move until its shadow falls across the center of the dial. The entire dial lies south of the cord's point of attachment.
 
 
Highland Park Illinois USA Polar Dial 377
This cast iron polar dial is centered in a 7 foot diameter, echoing the form of a "train wheel", matching the theme of a small park situated between a historic train station on the ancient Green Bay Trail and a pioneer cemetery. The polar dial has raised hour lines on the cast iron plate. Designed by Stephen Luecking and built at St. Mary's Foundry.
 
 
Lafayette Indiana USA Equatorial Dial 376
An 8 foot high equatorial dial of welded stainless steel with a brass gnomon and brass equatorial ring. The 60 inch diameter equatorial ring is engraved with hour marks and Roman numerals. Dial was commissioned by the cities of Lafayette and West Lafayette in celebration of the Millennium. Dial sits atop a short concrete pedestal.
 
 
Hibbing Minnesota USA Equatorial Dial 375
An 8 ft high equatorial sundial designed and built by David Aho. Made of welded stainless steel with a brass gnomon and brass equatorial arc dial. The 60 inch diameter equatorial dial is engraved.
 
 
St. Mary's City Maryland USA Cylinder Dial 374
Cement cylinder dial with an inside radius of about 18 inches and a concrete gnomon 5 inches thick. The hour is read on the top 9summer) face in Roman numerals from VII to XVII; the scale is offset for longitude correction. The cylindrical inner face is stainless steel with an engraved grid of quarter hours and months, with an equation of time curve on every hour.
 
 
Hollywood Maryland USA Horizontal Dial 373
A 26 inch hexagonal, English-made slate horizontal dial with a 3/8-inch thick, knife-edge bronze gnomon and no noon gap. Dial face has hour, half-hour and quarter-hour marks in inner bands, and 3-minute marks in the outer band. Hours are marked with Roman numerals. The dial sits on a hexagonal pedestal carved with coats-of-arms of families that lived at the plantation, including the Plater, Briscoe and Satterlee families. The dial face has four concentric bands of hour numerals. The outer band reads local time with an inscription that notes local noon is also noon at Boston, Peru and C. Redondo, and midnight at Borneo and Chinese Tartary. The second band shows noon in New Zealand, London and other locations. Two additional inner bands show noon in still other cities around the world. The plantation house overlooking the Patuxent River was constructed between 1710 and 1717 by James Bowles. Bowles died in 1727 and Sotterley Plantation passed through Plater and Briscoe ownership. The plantation was bought by Herbert L. Satterlee in 1910 and restored, including his vision of an 18th century garden in which he placed this sundial, received as a gift, in 1925. Admission fee is required. Call 301-373-2280 for hours.
 
 
Bowie Maryland USA Vertical Dial 372
A small vertical stone dial with a weathered wood gnomon is mounted with iron brackets to the wall of Sacred Heart Chapel. The dial is about 26 inches wide by 16 inches high. The inscribed longitude of 00 deg 20 min East is correct for the United States Prime Meridian which goes approximately up 16th Street in Washington DC. In 1853, fire destroyed everything but the walls of the chapel; it was reconstructed in 1858. The present stone dial is reported to have been made by Francis J. Deutsch, Sr., replacing and duplicating the original. See NASS Compendium Vol. 5, No. 3, Sept., 1998. The whole dial is now covered with white paint and the gnomon which is set at 42? is placed upside down. The wall is 7? SE but the dial was designed for true south.
 
 
Denver Colorado USA Horizontal Dial 371
The horizontal stone dial face is about 45 inches across, and is raised eight inches above ground level. It is inscribed with hours from IV to VIII. The dial was created about 1974 in memory of Persis McMurtrie Owen, who designed the west herb garden of the Botanic Gardens in 1964. See NASS Compendium Vol. 6 No. 2, June 1998
 
 
Guelph Ontario Canada Horizontal Dial 370
On the Sunnyside Estate front entrance is a small horizontal dial on a white pedestal surrounded by a flower garden. The original of this sundial is reputed to be the one that was mounted on the stump of the tree felled by John Galt in his ceremonial founding of Guelph on April 23rd, 1827. The original dial and pedestal were carved from Guelph limestone, and are in very poor condition. They were moved indoors during renovations in 1979. A replica now stands in the original position. See NASS Compendium Vol. 6 No. 3, Sept. 1999.
 
 
Reston Virginia USA Horizontal 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.
 
 
Denver Colorado USA Vertical Dial 368
On the southwest side of the Emerson School Building (now an office building and historic landmark) is a large white stone vertical dial with a stone gnomon. The large stone dial is part of the original brick building erected in 1884. Local history holds that the original architect was somewhat staid and stuffy and only agreed to include the sundial "because of its educational value." The dial was restored when the building was refurbished. See "Sightings" in NASS Compendium Vol. 6 No. 4, Dec 1999.
 
 
Casper Wyoming USA Horizontal Dial 367
The horizontal dial is a bronze circle 13.4 inches in diameter with raised lines and numbers and mounted on an iron plate on a pedestal of green stone. The angle of the gnomon is roughly 20 degrees, and the hour lines are designed for a latitude of about 22 deg, clearly not designed for Casper's latitude of 43 deg N. See "Sightings" in NASS Compendium Vol. 6 No. 4, Dec 1999. Pedestal is of the same green stone as the Planetarium building.
 
 
Dummerston Vermont USA Vertical Hours to Sunset Dial 366
This 4 x 8 foot vertical dial declines 8.4? west of south and displays "Italian Hours". Located on the southern gable of a hanger along a grass strip airport (fondly called the "Dummerston International"), the dial serves to tell pilots how many hours remain before sunset. The dial is painted board with vinyl lines, letters and numerals. A sign at the base explains how to read the dial. The dial was built by Mac Oglesby and Eliot Kimble. A smaller 2 x 2 foot vertical decliner is located on the western side of the hanger building as well. It too shows Italian hours.
 
 
Westminster Vermont USA Vertical Direct E/W and Polar Dial 365
This whimsical dial looking like a cut-out face is actually an East and West Vertical dial and a Polar dial. It stands about 4 feet high, and is built out of 1 inch steel plate fabricated in Windsor VT and installed on the Westminster West School grounds on a buried concrete pier. Near noon, a beam of sunlight shining through an "ear" indicates the date.
 
 
Toronto Ontario Canada Equatorial Dial 364
The face of this equatorial dial is an arc of a sphere 2 meters in diameter. A nodus on the polar gnomon casts a shadow indicating solar declination. Aligned with the dial is a 15 meter meridian line which passes through the site of the transit instrument of the former Toronto Observatory.
 
 
Williamsburg Virginia USA Horizontal Dial 363
Bronze horizontal dial 36 inches in diameter. The sundial was constructed in memory of their beloved scoutmaster Sydney "Mike" Mitchell. The $3000 cost was donated from former scouts and friends. The Boy Scout Law is cast around the outer diameter of the sundial. Various Scouting awards that the Scoutmaster received are also cast into the sundial.
 
 
Charleston South Carolina USA Vertical Recliner Dial 361
A 20 foot stone monument with a 2 foot diameter vertical recliner dial. See the NASS Compendium Vol.6 No. 1 Dec 1998. The platform in the base includes stones from the thirty-eight home states of those lost. Imbedded in the in the platform is a bronze arrow, pointing to the unmarked grave in the Atlantic.
 
 
DeLand Illinois USA Four-dialed pillar Dial 360
Granite four-dialed pillar about 5 foot high, possibly dating from the mid 17th century. Purportedly found in 1650 in Tinturn, Monmouthshire, England, and consistent with the dial latitude of 52 N. Dial face is 18 x18 inches. Gnomons on both east and west sides are turned off its original declination. A gift from Robert H. Allerton. The dial is well-traveled, and was brought to the United States in 1890 by the John Wanamaker stores. The fascinating history of this dial can be found in NASS Compendium Vol. 6 No. 1, Dec., 1998.