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.

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.
Sudbury Ontario Canada Terra Globe Dial 359
A monumental dial in stainless steel. At one end of 'Polaris Boulevard' which includes Terra, a segment of the globe oriented with Sudbury directly at the top. Celeste is a giant (12.8 meter or 42-foot) stainless steel sundial located at the south end of Polaris Boulevard. It consists of two arches, one which represents the equator in the sky, and one which represents the meridian, or the line from the North Pole to South Pole. A large steel pipe makes up the gnomon of the sundial.
Burmingham Pennsylvania USA Armillary Dial 358
An armillary dial in poor shape.
Columbus Ohio USA Sculpture Dial 357
"Hora Novem" An unusual 'solar calendar water sculpture' incorporating water jets which converge at center of a 17ft equatorial ring.
Durham North Carolina USA Sculpture Dial 356
"Gnomon", a large sculpture consisting of two monoliths made of steel-reinforced concrete slabs. Includes a noon indication.
Flemington New Jersey USA Horizontal Dial 355
Horizontal dial with an intricately hand cut stainless steel gnomon with a cast bronze dial face. The shadow casting style is the lower edge of the large gnomon. A second short gnomon indicates solstice and equinox dates. Dial sits atop a 700 lb stone pedestal base.
St. Louis Missouri USA Horizontal Dial 354
A horizontal dial sculpture called "Child Sundial" depicts a daydreaming child figure playing with a sundial gnomon that is part of a working sundial. The gnomon is about 5 1/2 inches high and the hour lines are adjusted to show standard time in St. Louis. The sculpture and dial are at ground level surrounded by a bed of creeping thyme, perhaps a gentle Herb garden pun. Statue constructed of lead, 12 x 21 inches
Augusta Georgia USA Analemmatic Dial 353
An analemmatic dial in brick and stone.