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.

 
 
Lake Forest Illinois USA Vertical Dial 805
A vertical south-facing dial, simple in design and visible to the shoppers in the U-shaped town square below. The dial face is plane white with Roman hour numbers fastened to a rod bent in an ellipse. No other delineation (such as solstice and equinox lines) is on the dial face. The gnomon is a simple rod held by an "S" shaped support.
 
 
Logan Utah USA Analemmatic Dial 804
Work to design and make the Analemmatic Sundial was done by students of the sixth grade science class and teacher Eric Newell in 2005. The central walkway uses stepping stones sandblasted with the name of the months. John Westenskow's ceramics classes at Mount Logan Middle School made the time stones. Students surveyed and plotted the location of the stones and provided the physical labor to dig holes and pour cement.
 
 
Pennington New Jersey USA Cylindrical Dial 803
This is an adaptation of the dual cylindrical sundial design by Hoffmann Albin of Butgenback, Belgium that provides for two separate dials to be displayed. In this variation, the two dials are separately displayed after being rotated and locked into viewing position every six months on the solstices. Except for two bronze sleeve bearings, all parts are 304 stainless steel that has been glass bead blasted to reduce reflection, machined, welded or laser cut. The analemmal hour lines, equinox and month lines are laser etched into the stainless steel dial plates. The dials and their supporting cradles are 12 gauge with 12" diameters. The post is 1.75" in diameter.
 
 
Round Lake Beach Illinois USA Horizontal Dial 802
This is an octagonal-shaped horizontal dial 240 mm (9.5 inches)across. The photo-etched plate has a central compass rose and delineated with a half hour circle and second circle dividing the time into quarter-hour increments. Roman numerals mark the hours from 6am to 6pm, with an extra hour mark to extend the dial's time-telling from 5am to 7pm. The dial is adjusted for the longitude of the site. Atop the dial face is a sturdy filigree gnomon approximately 5mm wide and 90mm (3.5 inches) high. South of the gnomon is a graphic Equation of Time.
 
 
Mesa Arizona USA Analemmatic Dial 801
This concrete analemmatic dial is set is a larger concrete plaza located in a City park with an overall theme of Sonoran Desert environmental education and nature-based play.
 
 
Magnolia Arkansas USA Analemmatic Dial 800
A 22 by 17 foot analemmatic dial of stained concrete with Arabic hour numerals of polished brass. The dial perimeter and hour numerals are set in a blue decorative polymer "U" arc, appearing as a large mule shoe that represents the university Muleriders mascot symbol. Dial colors represent the royal blue and gold school colors.
 
 
Wooster Ohio USA Vertical Dial 799
A vertical dial on a 15 x 40 foot section of a second story brick wall declining 11° east. The gnomon, hour lines and 7 am to 4 pm Arabic hour numerals are aluminum.
 
 
Georgetown District of Columbia USA Vertical Dial 798
A vertical dial, perhaps one foot square, above the front door of the Georgetown University Astronomical Observatory (the Hayden Observatory). The dial face has Roman hour numerals near its perimeter.
 
 
Cranford New Jersey USA Horizontal Dial 797
A 15 foot diameter horizontal dial with 5 foot high welded stainless steel plate gnomon. The dial face is elevated 18 inches by a white marble-faced platform above a 50 foot diameter concrete plaza that includes inset stainless steel hour line extensions. The dial face is rimmed with Bluestone and has elevated stainless steel hour lines for 4 am to 8 pm and elevated three inch stainless steel Arabic hour numerals. Cardinal directions are marked with elevated 6 inch stainless steel letters.
 
 
Shoreline Washington USA Analemmatic Dial 796
An 8 foot diameter concrete and pebble analemmatic dial with engraved stainless steel inserts for central date line and simple instructions for use. The dial face is raised one foot on a fluted column above the perimeter concrete and stainless steel walkway and has stainless steel Arabic hour numerals for 6 AM, 12 PM and 6 PM. The walkway has stainless steel inserts showing hour lines, magnetic north, true north, winter solstice, equinox and summer solstice directions.
 
 
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.