Sundials - World's Oldest Clocks

North American Sundial Society

Selected Sundials of Michigan

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Ann Arbor Michigan USA Vertical Dial 618
A painted steel on building brick vertical dial with a 6 foot gnomon. Gnomon includes decoration of two children and a gear wheel. Hour markings are Roman numerals.
Ann Arbor Michigan USA Vertical Dial 199
A stone and bronze vertical dial approximately 10x6 feet just below the roof of the Mack School. Dial face includes Roman numerals showing Eastern Standard Time and a polar gnomon. Inscription appears below gnomon.
Annapolis Maryland USA Self-Orienting Dial 174
4'x4' Bronze & Brass 4' Dial plate is elaborately engraved bronze with hour and date lines. Self-orienting dial. Locate line for the date; rotate dial until shadow tip touches that line. Read time from intersection of the shadow's tip and the time line radiating from dial center. Gnomon is a model of a naval missile, resting on an anchor. A ship's binnacle supports rotating sundial plate. As of July, 2012 the missile gnomon is missing.
Annapolis Maryland USA Horizontal Dial 181
18" Bronze on stone Gnomon 10" long, 6.25" high 'United States Naval Hospital Annapolis MD' on dial face below 6AM/PM lines. Tells local apparent time. Has Arabic numerals, hour lines and shorter half-hour lines. Dial sits atop a circular stone pedestal with beveled capital.
Annapolis Maryland USA Armillary Dial 765
A bronze armillary dial with meridian, horizon and equatorial rings on a concrete pedestal. Dial is located in Government House residence and requires a tour of the property for access.
Anthem Arizona USA Alignment Dial 821
The Anthem Veterans Memorial in Anthem, AZ was dedicated on November 11, 2011 at 11am (11-11-11) to honor the service and sacrifice of the United States armed forces and to provide a place of honor and reflection for veterans, their family and friends. Veterans gather here annually on November 11th to watch a solar alignment at 11:11am when the sun precisely illuminates a 3-foot medallion of The Great Seal of the United States.
Arcata California USA Armillary Dial 192
Armillary dial with horizon ring 4 ft. 4.5 in. diameter designed by Ken Lynch. Dial is made of brass and horizon ring has signs of the zodiac on it. Mounted at ground level with a separate plaque with Equation of Time. After the dial was installed the university ordered the point on the end of the gnomon sawed off. It was feared that someone might become impaled on it. Gift of Harvy S. Kieval, Professor Emeritus - Math.
Arvada Colorado USA Horizontal Dial 22
A large horizontal dial of brick and stone with a formed structural steel gnomon in the form of a modern sculpture. Roman numeral hour marks doe DST are on raised brick pillars.
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.
Atlanta Georgia USA Equatorial Dial 272
This equatorial dial 1 meter in diameter. Made of iron, it has both an equatorial and meridian arc. There is an east-west thin vertical hoop that holds the arcs together. The sundial gnomon is an arrow held by the meridian arc and pointing to the north celestial pole. The dial rests on a triangular base that has the German eagle carved on all three sides.
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.
Auburn Maine USA Point in Space Dial 690
A point-in-space dial painted on an asphalt parking lot using the tip of a vertical light pole as the gnomon. Dial face includes hour lines, solstice and equinox lines and a compass rose showing true north direction. Markings include an analemma on the noon line with monthly marks. The dial is used as a teaching tool with formal lessons for students. The dial was designed using calculations from Naval Observatory.
Augusta Georgia USA Analemmatic Dial 353
An analemmatic dial in brick and stone.
Augusta Maine USA Horizontal Dial 872
This historic brass dial is about 18 inches in diameter, set upon a square, concrete pillar. The dial plate has Roman numbers and is delineated in quarter hours. Magnetic variation is engraved at degree intervals. The dial originally had a removable wood cover, then a metal one, which became permanently closed. It was removed in 2009 and now has a plexiglass cover. From Betty Adams in the Kennebec Journal, "At the uncovering, a half dozen people strained to read some of the lettering on the dial: 'Arc for magnetic variation', [and on an interior circle] 'Moses B. Bliss - Circumferentor' which means surveyor's compass... The meridian monument was one of those erected at county courthouses in Maine between 1869 and 1871, according to research by Harold E. Nelson, senior geodesist at the Maine Department of Transportation's property office...Nelson said the monument would have been used by local land surveyors to test their compasses against true north."
Aurora Colorado USA Equatorial Dial 81
A large Erickson Monument equatorial polar dial 6 feet in diameter made of light granite with a 3 inch steel rod as gnomon. The dial was dedicated as part of the bicentennial celebrations in July 1976. Hour lines from 4am to 8pm. Time is graduated by half-hour, quarter hours and 5 minute marks. Designed to be read from the upper surface in Spring/Summer, from the under side in Fall/Winter. A plaque provides the Equation of Time to convert solar time to watch time. Dial has both the bicentennial emblem and the city seal of the city of Aurora.
Baltimore Maryland USA Horizontal Dial 323
Nice horizontal dial sitting on a 6 x 4 foot stone pedestal. The dial itself is 5 foot in diameter with a 2.5 foot gnomon of open-work bronze. The lines, numerals and lettering of the dial face are so finely done that one cannot tell whether the dial plate was made of cast stone or was carved by an extraordinarily skilled mason. The gnomon, unfortunately, is situated incorrectly on the dial face. The point at which the stile diverges from the dial plate is about five inches south of the correct point where the hour lines converge.
Baltimore Maryland USA Horizontal Dial 324
A horizontal dial 36 inches in diameter, made of bronze, sitting on an irregular pentagonal block of granite. Gnomon missing. Calibrated to read local solar time, and has a graph of the Equation of Time to correct readings to standard time.
Baltimore Maryland USA Horizontal Dial 325
A 12 inch diameter horizontal bronze dial. A wire is stretched from the dial's center, which is decorated as a cluster of flowers, to the beak of a bird perched on the rim of the dial plate, forming the gnomon at proper angle. The bird is apparently the 'early bird' eating the worm (gnomon). The dial plate itself has hour lines and Roman numerals from 5 am to 7 pm. Dial sits atop a cast concrete post with octagonal top.
Baltimore Maryland USA Horizontal Dial 326
'Very bad small dial on a beautiful stone pedestal. The engraving on the base states that it was erected in 1908. At some point the dial face went missing. A new dial was installed sometime before 1966. It is doubtful that the existing dial is a replica of the original. The stylistic differences between the design of the pedestal and the design of the new dial which sits atop it are apparent.' (McDowell)
Baltimore Maryland USA Equatorial Dial 327
The dial is a partial cylinder held upright at the proper angle by four ornate pillars. The gnomon is a wire stretched between another pillar at the south edge and the mouth of an eagle mounted on another pillar at the north edge. On the wire is a bead, the shadow of which falls on the cylindrical plate. The cylindrical plate has an analemma for each daylight hour of standard time.' (McDowell) One of three known to be made in this design. Another dial of this design, once in front of the Physical Laboratory at Northwestern University, was placed at a private residence in New Hampshire in 1973, Evanston, IL.