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.

Seattle Washington USA Vertical Dial 795
A 4 foot wide by 1.5 foot high etched glass plate vertical dial. The gnomon is formed by crossed bars several inches behind the plate and casts its shadow on hour line analemmas. Roman hour numerals for 10 AM to 4 PM are scribed under each analemma; other hours are Arabic. Solstice and equinox lines are scribed across the plate, as are narrow lines at 10 day intervals. Months of the year are scribed about the plate perimeter. A description of the dial is marked on the left side of the plate and the fountains are visible through the plate
St. Petersburg Florida USA Equatorial Dial 794
A very large bowstring equatorial dial. The outer diameter of the equatorial ring is 26 feet, the height of the meridian ring is 22 feet above the base and the gnomon rod is 26.5 feet long, making this possibly the largest bowstring dial known at this time. The equatorial ring is marked on two faces with large Roman hour numerals for 7 AM to 5 PM. The dial base includes a large compass rose marked with major directions.
Washington DC USA Horizontal Dial 793
An incorrectly installed but prominently displayed 8 inch bronze horizontal dial with hour, half-hour and quarter-hour lines and Roman hour numerals from 5 AM to 7 PM. The bronze gnomon is inclined from the dial face approximately 42° and the hour lines appear correct for that latitude, though the local latitude is about 39°.
Senatobia Mississippi USA Vertical Dial 792
A south facing vertical dial placed above a window high on a wall of a high school. The dial face includes hour lines and Arabic hour numerals 6 AM to 6 PM. The dial is a separate plate affixed to the wall. The dial may be viewed from College Street side of the building.
Seattle Washington USA Vertical Dial 791
A south facing vertical dial on a chamfered triangular pillar. The gnomon is slightly bent. The dial face includes hour lines with Arabic numerals for Pacific Standard Time and PDT, the approximate coordinates and the magnetic declination.
Scarborough Ontario Canada Equatorial Dial 790
A 45 inch diameter bronze equatorial ring dial with an arrow-pointed rod gnomon. The dial is mounted atop a 36 inch square pink granite plinth with chamfered corners sitting on a concrete base.
Northern Bay Newfoundland Canada Armillary Dial 789
An approximately 24 inch diameter steel and aluminum armillary dial with wrought iron scrollwork base. The equatorial ring includes an aluminum plate inscribed with hour, half-hour and five minute marks showing time from 5 AM to 7 PM. A plaque on the pillar below shows combined corrections for EOT and longitude. The dial is mounted on a 10 inch fluted concrete pillar, reinforced with steel rebar.
Howell Michigan USA Analemmatic Dial 788
A 16 by 20 foot, two-tone concrete analemmatic dial with 7 AM to 8 PM Arabic hour numerals on 12 inch round stamped concrete disks. Instructional and use information is shown on impressed lettering colored concrete plates.
Falls Church Virginia USA Vertical Dial 787
A large vertical dial on the southwest brick wall of a private home. The hour lines are square PVC stock. Arabic hour numerals for noon to 7 PM are brass plated figures mounted on brass plaques. The dial declines 54 degrees from south to west. The ends of the hour lines indicate the solstices except for several long summer hour lines. The equinoctial points are marked by red glass inserts on the hour lines.
Capitola California USA Equatorial Dial 786
A wrought iron equatorial dial with an arrow rod gnomon. Equatorial band and support have iron scroll work depicting a bow and arrow. Dial is painted and hour numerals are obscured.
Miami Florida USA Vertical Dial 785
An east-declining vertical dial near the top of a stone winter residence building, now a museum. Dial face includes hour lines and Roman hour numerals for 5 AM to 3 PM. Building and dial were built in the early 1900s but gnomon appears to be in good condition without corrosion so it may be bronze. Dial includes a depiction of a scroll with engraved Latin inscription.
Quincy Illinois USA Analemmatic Dial 784
A 10 foot x 18 foot analemmatic dial built of Keystone Blue granite from the quarry in Elberton, Georgia. Hour markers for 7 AM to 5 PM show Arabic numerals and identify the organizations donating to fund the dial. Each hour marker depicts the morphology of a leaf from a tree located in the nearby arboretum. The hour markers are 15 inches in diameter and 6 inches thick, weigh 102 pounds each and are placed flush with the soil to reduce potential for vandalism.
Farmington Utah USA Horizontal Dial 783
A 28 x 20 x 2 inch sandstone horizontal dial with a 1/2-inch thick, hand-tooled copper gnomon. Dial face has Arabic numerals and hour lines corrected for local longitude. Dial was hand carved with carbide chisels and maul but using techniques and natural stone used to create ancient Native American petroglyphs found in the southwest USA. Dial is mounted 2 inches above a sandstone base weighing 400 pounds by brass leveling pins; this mounting makes the dial appear to "float" above the stone base. A "Desert Varnish" finish has been applied to the dial face using a natural process that mimics what naturally happens to exposed sandstone over several thousands of years. The natural color of the stone is exposed by the carving process to create a color contrast as might be seen in a Native American petroglyph. Dial is located in the front yard of a private residence. Viewing can be arranged by contacting the owner by email at
Muncie Indiana USA Equatorial Dial 782
A 9.5 inch wide bowstring equatorial dial built using the aluminum photo drum of a xerographic copier machine. The gnomon is stretched fishing line. Hour lines and numerals are marked by lead pencil and include 5-minute marks. The hour ring can be rotated to set for standard or daylight saving time and the elevation angle is adjustable. The dial is mounted on the deck railing of a swimming pool. This dial is located in a private home. Viewing can be arranged by contacting the owner by email at or by telephone at 765-289-5890.
Calgary Alberta Canada Analemmatic Dial 781
A school yard 6 by 4 meter analemmatic dial of pigmented concrete. The Sunclocks registered design has two hour ellipses, the outer one for standard time, the inner one for daylight saving time. The zodiac table is larger for the fall and winter periods so the design is really two sundials in one. Longitude correction is included. The plaque provides instructions in French and English and notes the dial marks the 50th anniversary of Ecole Banff Trail. The plaque instruction to stand on the current month is misleading; the user should straddle the dial centerline to avoid an offset error.
Windsor Ontario Canada Armillary Dial 780
A simple armillary dial about two feet in diameter with an equatorial hour ring. The dial is mounted atop a tall, black cylindrical pillar within a formal garden of Willistead Manor. The manor is open to the public on selected days.
Windsor Ontario Canada Noon Mark Dial 779
A 12 foot high noon mark dial consisting of two closely spaced triangular vertical plates, a protruding needle and pairs of summer and winter solstice "wings" that together project a shadow onto the surrounding concrete deck within a 40 foot diameter reflecting pool. When the sun totally illuminates the narrow space between the vertical plates, it is local noon and the shadow cast by the protruding needle points true north. On the summer solstice, the shadow cast by the smaller, upper solstice wings will be at its narrowest width. On the winter solstice, the shadow cast by the lower solstice wings will be at its narrowest width.
Sterling Virginia USA Reflection Dial 778
A reflection dial using a mirror in an upper window to project a solar image spot onto the west facing vertical interior wall of a church. Copper medallions on the wall show the spot location at 10:30 AM throughout a year and depict the analemma curve.
St. Louis Missouri USA Equatorial Dial 777
A cast aluminum equatorial dial 15 inches in diameter with a rotating, two-part, three-dimensional analemmic gnomon; this is a classic Schmoyer dial completed by Bill Gottesman. One gnomon half is used from summer solstice to winter solstice; time is shown by a beam of light passing through the gnomon slit to fall on the hour ring. The other gnomon half is used from winter solstice to summer solstice.
St. Louis Missouri USA Equatorial Dial 776
A 10 inch wide, cylindrical-segment equatorial dial 8 inches high, fabricated from a section of large PVC pipe. The dial face is aluminum sheet bonded to the PVC pipe and marked by photochemical engraving with hour lines showing analemmas to correct for EOT; hour lines are corrected for longitude and show both standard and daylight saving Arabic hour numerals. Winter and summer solstices and equinoxes are marked. Time and date are read by the shadow of the intersection of the two gnomon rods. Instructions are included on the dial face and plaque.