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.

 
 
Pocatello Idaho USA Vertical Dial 742
A south-facing vertical dial split into two sculptures separated by a walking path. The dial faces are vertical powder coated steel sculptures with cut hour lines. The gnomons are travertine limestone blocks with the top edges pointing to celestial north. The edges of the gnomon stones cast the shadow onto the vertical dial faces. One dial face shows the morning hours, the other shows the afternoon hours. The gnomon styles extend to both sides of each dial face allowing extended time and season use. This sculpture, "PASSAGE OF TIME," was commissioned by the City of Pocatello to represent Pocatello as the "Gate City," historically known as the gateway to the Snake River Plains. The meandering sidewalk path represents passage through both time and space.
 
 
Philadelphia Pennsylvania USA Equatorial Dial 741
An equatorial projection dial with a 12 inch diameter stainless steel equatorial ring incised with Arabic hour numerals that project onto a grooved central support shaft of Cipollino and Carrara marble set on a bluestone foundation. A hole near the top of the central marble shaft emits flowing water that runs down the central groove and is recirculated in the warm months. The sundial/fountain marble shaft is 7 inches wide, 36 inches high with a 24 by 55 inch wide base. The dial and nearby Cipollino marble bench rest on a 13-1/2 foot diameter foundation of bluestone pavers set on concrete. Direct sunlight on the dial is limited by two of the three nearby buildings. In summer with a high elevation sun, sunlight casts gnomon shadows mid-day and for a few hours in the afternoon. The sundial/fountain sculpture was commissioned by Society Hill Towers in honor of I. M. Pei, Architect of the Towers and was dedicated on the 40th anniversary of the Towers in 2003.
 
 
Palos Verdes Estates California USA Armillary Dial 740
A 1.5 meter diameter bronze armillary sphere atop a beige stone pedestal at the center of a 9 meter diameter pond or fountain. The Armillary includes meridian, equatorial and horizon rings as well as Arctic and Antarctic circles. The equatorial ring is perforated with Roman hour numerals and Zodiacal symbols. The central gnomon rod has a ball at the north end and an arrow tail at the south end.
 
 
Ottawa Ontario Canada Calendrical Dial 739
A projection calendrical dial that illuminates the headstone of the Unknown Soldier on Remembrance Day, November 11 at 11:00 AM, commemorating the end of World War I. Remembrance Day is celebrated on the 11th hour of the 11th day of the 11th month of each year. The east-west axis extends to the Peace Tower, while the north-south axis parallels the path of the sun across the building on November 11. The concrete walls, grooved with large offset rectangles, are reminiscent of the rows of white grave markers in Allied war cemeteries. The headstone of the Unknown Soldier is the lone artifact, a simple bench the only furniture in Memorial Hall.
 
 
Oak Bay British Columbia Canada Horizontal Dial 738
A 10 inch square brass or bronze horizontal dial atop a 22 inch square concrete base with cross-shaped plinth 42 inches high. The natural patina developed by the corrosive sea air has reduced the contrast of the markings. Stylized Arabic hour numerals are engraved in circles. Engraved scrolls add interest but some confusion to the dial face. The dial face and gnomon are only one-eighth inch thick but remain intact.
 
 
North Little Rock Arkansas USA Horizontal Dial 737
A cast bronze horizontal dial atop a concrete pedestal. The dial face includes hour lines, quarter hour marks and Roman hour numerals. The dial face includes inscribed (not in original casting) lines that indicate the sunrise and sunset times for the longest day (L-Day VI-21), shortest day (S-Day XII-21) and equinoxes (12-H Day IX-21).
 
 
Langford British Columbia Canada Horizontal Dial 736
A cast bronze horizontal dial with thick bronze gnomon. Dial face shows hour lines and quarter-hour marks, and Roman hour numerals. Dial center includes a compass rose.
 
 
Tucson Arizona USA Projection Dial 735
A fused silica glass spherical lens projects a solar image spot onto the inner surface of a spherical segment of glass with a frosted area inscribed with hour lines and Arabic hour numerals. Time is read from the bright spot of light on the frosted surface while standing under the dial. Dial is mounted atop a pipe pillar on the patio of the Visitor Center.
 
 
Carlsbad California USA Vertical Dial 734
A large vertical dial on an east-declining south stucco wall of an elevator tower in the parking lot of McClellan Airport. The gnomon, hour and declination lines and Arabic numerals are stainless steel. The dial design is flawed, incorrect for either a point-in-space nodus dial or a polar-inclined gnomon dial. The installed gnomon is horizontal but if intended to support only a nodus, the location is wrong; the nodus shadow is outside the lower declination line in the photos. The hour lines radiate from the gnomon base as for a polar-inclined gnomon; they should radiate from a point much higher if for a point-in-space nodus.
 
 
Kalamazoo Michigan USA Combination Dial 733
A combination horizontal, vertical, polar and equatorial dial 4 x 5 x 6 foot tall made of drilled aluminum plate with rod gnomon. The vertical plate shows the EOT graph and depiction of Earth showing polar tilt, celestial equator and Earth equator using drilled holes. The bottom plate below the equatorial face includes a compass rose that also shows the direction of sunrise and sunset at the solstices. All dial faces are marked using Arabic numerals with hour and 15 minute marks. The Kalamazoo Nature Center is open most days and charges an admission fee.
 
 
Atlantic Beach Florida USA Polar Dial 732
A 12 x 12 inch polar dial of printed plastic. Unlike the typical polar dial, this dial uses point-in-space or nodus gnomons. The dial face is aligned in the polar plane; separate face markings and gnomons show summer-to-winter and winter-to-summer hour and date lines corrected for EOT and longitude. Time and date are read from the shadow of only the tip end of each gnomon rod. The three foot high PVC dial support allows the face to be rotated about the polar axis; the face is pointed at the local meridian for ST and rotated 15? east to set for DST. The face has hour lines for 8 AM to 4 PM and date lines for each month. The hour and date lines were designed for the dial location, median solar declination and the equation of time over a leap year cycle, atmospheric refraction and shadow shortening due to the 90? included angle conical gnomon points. The dial is accurate within two minutes. Dial face is marked with location, coordinates and designer name. This dial is located within Fleet Landing, a gated retirement community. Please contact Russell Boyd, the dial owner/designer at 904-241-8544 to arrange visiting the dial.
 
 
Asheville North Carolina USA Analemmatic Dial 731
A 16 foot major axis analemmatic dial with stained concrete, hand painted date line. Hemlock branch hour posts were cut by Estate foresters and use iron numerals hand-forged by the Estate blacksmith. The Biltmore Estate was constructed by George Washington Vanderbilt II from 1889 to 1895 and is the largest privately owned home in the United States. The home currently sits on over 8,000 acres and includes many acres of formal gardens, a winery, working farm, hotel and several restaurants. The Estate is open to visitors with purchase of admission.
 
 
Stouffville Ontario Canada Vertical Dial 730
A 46 inch wide by 52 inch high south-facing vertical dial of high density urethane with a 10 mm diameter stainless steel gnomon. Dial face has hour lines with half-hour marks and Roman numerals. Hour lines are longitude corrected. A brass plaque containing the dedication, additional information about reading the dial and an equation of time table is mounted on the building wall below the dial. An informative booklet about church sundials is available in the church.
 
 
Madison Wisconsin USA Horizontal Dial 729
An octagonal limestone horizontal dial with bronze gnomon. Hour lines are hand chiseled with no hour numerals. The noon line includes an inset bronze triangle. Viewing the dial within the garden requires an admission fee.
 
 
Bloomington Indiana USA Vertical Dial 728
An approximately 4 foot square, limestone south-facing vertical dial with a bronze gnomon. Dial face has hour lines and half-hour marks with Arabic numerals. Tall trees shade the dial most of the day.
 
 
Niceville Florida USA Analemmatic Dial 727
An interactive analemmatic dial with 6x3 meter major and minor ellipse axes and built of precast concrete, tiles and glass with Roman hour numerals. Dial face markings include Ante Meridiem, Post Meridiem, astronomical symbols for days of week and constellations of the zodiac, compass rose, Sun face, Ursa Major bear constellation with Big Dipper asterism, Polaris solar cell visible at night beneath the noon mark, artistic analemma and artist inscription. Inspired by the analemmatic dial "Keppel Henge" located at Georgian Bay, Ontario, Canada, the dial was two years in design and construction, with financial support from Ms. Dotty Blacker of Valparaiso, Florida and the NWFSC Foundation. Dial accessories include 8 and 12 foot gnomon poles with leveling clinometers allowing the dial to be used with precision for demonstration and instruction. The dial is a focal point for geoscience instruction both in the classroom and the local community. The Science Department at NWFSC offers many courses in the geosciences that benefit from the dial, including Earth Science, Physical Science, Physical Geology, Oceanography, and Astronomy; supports baccalaureate programs in Elementary and Middle School Math & Science Education; and is frequent host to a local astronomy club.
 
 
San Ramon California USA Bow-String Equatorial Dial 726
This 5 x 5 x 6.5 foot stainless steel bow-string equatorial sundial is a precise heliochronometer with internal cam mechanism to correct for the Equation of Time. This exceptional dial is made of welded stainless steel sheet and weighs 330 pounds according to the designer Lee Palmer Stephenson. The dial face of the 60 inch diameter equatorial ring is marked with hour, half-hour, 15 minute, 5 minute and one minute lines and Arabic hour numerals showing PST and PDT.
 
 
Cambridge Massachusetts USA Polar Dial 725
A small polar dial with Arabic numerals for EST and EDST
 
 
Jamestown Virginia USA Horizontal Dial 724
A 15 inch octagonal bronze horizontal dial with a bronze gnomon. Dial face shows hour, half-hour, quarter-hour and 5-inute marks with Roman hour numerals. The gnomon is damaged and analysis shows the dial hour lines are laid out for approximately 45° latitude instead of the local 37° latitude. The dial is on a white granite pillar.
 
 
Albuquerque New Mexico USA Calendrical Dial 723
An 8x36 inch polar noon meridian dial of wood and steel pipe. The dial face is inclined at the latitude angle and the shadow-casting 36-inch gnomon pole is perpendicular to the dial face, pointing at the local meridian on the celestial equator. The gnomon pole shadow shows the declination of the sun, with the shadow extending below the gnomon in spring and summer, and above the gnomon in fall and winter. Short rods at the tip of the gnomon cast a cross-shaped shadow on the dial face, marking the date on the nail head analemma on the dial face. At local noon the gnomon shadow is vertical; the face and gnomon size are selected to allow the shadow to always fall on the dial face at noon throughout the year. On the equinoxes, the cross shadow bisects the gnomon base. This dial is on private property but may be seen from the public sidewalk. For closer inspection, the owner may be contacted.