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.

 
 
Columbus Indiana USA Vertical Dial 675
An approximately 10 x12 foot brick and stainless steel south-facing dial atop a 50 foot tower. This resembles an actual vertical dial but has a horizontal gnomon rather than a polar-pointing gnomon. The hour lines verify against ZW2000 software calculated angles for a due south dial but are non-functional with a horizontal gnomon. Dial face includes hour lines for 6 AM to 2 PM but no numerals. It's more sculpture than sundial.
 
 
Columbus Indiana USA Horizontal Dial 674
A 10 foot diameter horizontal dial of concrete, stainless steel and brick. The gnomon is a massive concrete structure and the Arabic hour markers are inset in the concrete dial face, which serves as a bench.
 
 
Clear Lake Shores Texas USA Equatorial Dial 673
An approximately four foot diameter ring equatorial dial of painted steel with Roman numeral hour marks and a long double-bar steel gnomon. Ring is sagging somewhat at base support, perhaps from being climbed upon.
 
 
Denver Colorado USA Horizontal Dial 672
A cast bronze round horizontal dial with 4 AM to 7 PM hour lines and Roman numerals. The gnomon has an unusual curved root, making it appear to be misplaced to the south on the dial face when it appears to actually be correctly placed. Dial sits on a marble pedestal
 
 
Newport Rhode Island USA Vertical Dial 671
An 8x8 foot vertical dial of carved stone with hour lines and Arabic numerals and with Zodiacal symbols around dial perimeter. Dial declines to the west and has a bronze gnomon. Access to view dial is available to all campus visitors.
 
 
Chattanooga Tennessee USA Horizontal Dial 670
An 18 foot diameter horizontal dial of concrete and pebble with a cast bronze figure of a boy with outstretched arm, the 8 foot high finger tip of which serves as a point-in-space gnomon. The dial face includes hour marks and declination lines. An open book plaque on the bronze statue base gives instructions. Substantial surrounding building clutter blocks the sun for much of the day, rendering the dial without shadow.
 
 
Albuquerque New Mexico USA Horizontal Dial 669
A 36 inch diameter brass and copper horizontal sundial with a gnomon depicting a bird standing and a bird in flight. The bird motif reminds of "The Bird of Time has but a little way to fly--and Lo! the bird is on the Wing" by Omar Khayyam. The gnomon is buttressed for strength and includes a brass ball at the top as a safety feature in light of a nearby middle school.
 
 
Calgary Alberta Canada Analemmatic Dial 668
An analemmatic dial with 14.8 foot major axis with hour posts and date line of concrete on a grassy playground. Date line includes footprints of cut aluminum.
 
 
Omaha Nebraska USA Analemmatic Dial 667
A 20 foot square dial painted on concrete. Painted hour markers in two arcs for ST and DST include longitude correction. A nearby plaque provides instructions for use of dateline but has the hour marker arcs miss-labeled for ST and DST.
 
 
Calgary Alberta Canada Analemmatic Dial 666
An analemmatic dial with 14.8 foot major axis of concrete, pebble and rock with cast concrete hour markers. Hour lines are longitude corrected and mark DST. A Zodiac date line of colored concrete is inlaid on the dial face. Seasonal markers for sunrise and sunset are included.
 
 
Omaha Nebraska USA Horizontal Dial 665
A bronze horizontal dial with 5 AM to 7 PM hour lines and Roman numerals. Placed on a cast concrete pedestal 3 feet high in the form of a tree trunk with an image of a bird cast into the base.
 
 
New Haven Connecticut USA Vertical cylindrical Dial 664
A nearly 50 foot tall vertical concave cylindrical projection dial of precast concrete lined with aluminum panels and with an aluminum band projection gnomon. The curvilinear interior surface is inscribed with vertical hour lines and horizontal solstice and equinox marks. The band gnomon features a 2.5 inch diameter hole that projects an image of the sun on the silver-colored interior surface against a shadow cast by the gnomon band itself.
 
 
Victoria British Columbia Canada Analemmatic Dial 663
A 20 foot overall tinted concrete analemmatic dial with brass numerals, aluminum and granite slabs. Distance between major axis and small hour marks is 16.4 feet. Brass Roman numerals 10 inches high are set in a grey outer ring. Longitude and EOT corrections are marked beside the monthly date marks. A plaque commemorating the British Columbia 150 year celebration includes instructions on use and information on the dial designers and sponsors. Andrei Golovkine, a local designer and community activist conceived, designed and proposed the project to the sponsors. Dr. Dmitry Monin, an astrophysicist at the nearby NRC Herzberg Institute provided the gnomonic design.
 
 
Portland Oregon USA Vertical Dial 662
A classic stone 20 x30 inch south facing vertical dial with bronze gnomon on brick building above sally port about 30 feet above grade. Hour lines with Roman numerals are corrected for longitude. Flanking the sally port are carved figures of Lux, or light, with open eyes on the east and Nox, or night, closing its eyes for sleep on the west. Reed College is a west coast "Ivy League" college following the Collegiate Gothic traditions of Oxford, Cambridge and the eastern US colleges.
 
 
Calgary Alberta Canada Horizontal Dial 661
A 9 inch diameter horizontal dial of Welsh green slate with brass gnomon. Hour lines show DST with longitude correction. Declination lines are shown for solstices and equinoxes. The gnomon includes a NASS logo. The dial sits atop a stone plinth with 12 inch diameter top. The original Sundial of Hope, sponsored by Child Find of Alberta, was placed in 1993 on an original plinth dating to before WW2. The simple dial installed in 1993 had been vandalized and the gnomon was missing. Roger Bailey designed and built this replacement dial to commemorate the 10th Anniversary of the founding of NASS. The new dial was unveiled during the 2003 NASS Conference Sundial Tour.
 
 
Portland Oregon USA Vertical Dial 660
A 4 x 2.5 foot south-facing vertical dial of mosaic tile whose hour lines include longitude correction.
 
 
Vancouver Washington USA Equatorial Dial 659
A 2 meter diameter ring equatorial dial of welded anodized aluminum plate. The dial face shows Arabic numerals with hour and quarter-hour marks. This face can be moved for longitude correction and DST, and was originally adjusted to correct periodically for EOT. In 2009, the original straight gnomon was replaced with an analemmic gnomon, eliminating the need to adjust or correct for EOT.
 
 
Redlands California USA Vertical Dial 658
A 60x40 foot vertical dial of stucco, wood and brass, filling the south exterior wall of the building. Roman hour numerals show PST; Arabic hour numerals show PDT. Summer and winter solstice and the equinox lines are shown; the shadow of a nodus on the gnomon indicates the date. Dr. Nordgren explains that the shadow of the 10-inch diameter nodus "is just the right size to take into account periods when sundials are fast or slow relative to clock time. When dials run their slowest, the leading edge of the nodus shadow gives the accurate time. During periods when dials run their fastest the trailing edge gives the accurate time." Dr. Nordgren was among the seven designers of the sundials used on the NASA Mars Rovers in 2004.
 
 
Gold Canyon Arizona USA Horizontal Dial 657
Built as an Eagle Scout project, this 10 x 5 foot semicircular concrete and steel dial features a 3 foot tall figure of a coyote as the gnomon. The tip of the coyote's nose functions as a point-in-space gnomon. The figure is placed well forward, limiting the times and dates the nose-tip shadow will fall within the hour circle to about 9 am to 3 pm on dates near the summer solstice.
 
 
Colwood British Columbia Canada Horizontal Dial 656
A 12 inch octagonal stone horizontal dial with Roman hour numerals. Dial face depicts sun rays radiating from a central Beau Soleil to the hour numerals and outer time scale, which displays 5 minute graduations. This historic dial dates from the original Pendray House on the Havenwood, built in 1928. The dial was in poor condition and the gnomon was missing. In July, 2009, NASS member Roger Bailey cleaned the dial, highlighted the markings and fabricated and installed a new brass gnomon. The property is now Essencia at Esquimalt Lagoon, a private resort community but with public access for community activities. A stone path and arch lead to the dial, nearly overshadowed by a large tulip tree.