Sundials - World's Oldest Clocks

North American Sundial Society

Selected Sundials of Massachusetts

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Greenfield Massachusetts USA Hours To Sunset Dial 475
A 5 foot diameter pink Canadian granite horizontal hours-until-sunset dial. The 8 inch thick granite slab weighs 2000 pounds and rests on a short recessed pedestal, appearing to float above the grass dome of a memorial garden. Lines for hour periods 2-12 are marked with Arabic numerals. The gnomon is a 3/8 inch brass rod protruding 4 inches above the dial face. The dial face is engraved, "HOURS UNTIL SUNSET" and, "READ TIP OF SHADOW." This sundial does not function in the usual manner that tells time of day. Rather, this dial tells the number of hours from the present time of day to the time of sunset. These are equal-period hours counted down until sunset. Since it shows a time period, rather than time-of-day, the dial accuracy is not affected by season of year, daylight saving time or longitude location within the local time zone. Further, this particular design uses a horizontal dial face, while most hours-until-sunset dials use a vertical face. This dial is dedicated as a memorial to Dr. Pallav Parakh, a much-loved surgeon who was killed in a tragic auto accident while walking in a crosswalk.
Greensboro North Carolina USA Equatorial Dial 277
33 ft. Bronze Sundial consisting of two intersecting semi-spherical arcs. Gift of the Greensboro Council of Garden Clubs, 1981. Mounted atop a 12 sided granite base.
Greenville Delaware USA Equatorial Dial 530
A 15-inch cast aluminum equatorial sundial designed and built by Richard Schmoyer originally installed in 1972 and replaced in 1985 after theft. A three-dimensional analemmic gnomon corrects for Equation of Time. The observatory is open to the public every weekday morning.
Greenwich Connecticut USA Horizontal Dial 345
Large horizontal dial is 130 ft. diameter and uses 15 hour stones to mark the time. Dial designed by Shope Reno Wharton Associates and built by sculptor Mark Mennin of Bethlehem, CT. The striking gnomon is a bronze tapered spike 8 in. at the base and 35 ft. 2 in. in overall length set in a 4 ft. bronze web, producing a 20 ft. high tip above the average grade. The noon stone is a flat marble slab 5 ft x 8 ft with a center score line. The 14 other hour stones are sculpted marble, each about 3 ft x 5 ft, abstractly depicting the progress of mankind's social progress across time. Only the first and last stone are marked with a time arrow. On the ground are two marble cubes with didactic bronze plates. Dial is adjacent to a pair of bronzed driftwood horse sculptures (full size). Dial site will be the first stop on the Bruce Museum school tour route. Gift from the Millennium Committee to the city of Greenwich
Guaymas Sonora Mexico Equatorial Dial 388
Dial is of stone, carved in a thick semi-circle ring about 200 degrees in extent. Dial is 36 inches in diameter and 10 inches thick. The inner rim of the dial is a "vee" shape. The gnomon is an iron rod protruding from the equatorial ring at the 12-hour mark, and at the center of the ring turns at a right angle to align to the north pole. The massive stone dial is set on a masonry block pedestal 40x40x20 inches. The pedestal is neither level nor cardinal.
Guelph Ontario Canada Horizontal Dial 370
On the Sunnyside Estate front entrance is a small horizontal dial on a white pedestal surrounded by a flower garden. The original of this sundial is reputed to be the one that was mounted on the stump of the tree felled by John Galt in his ceremonial founding of Guelph on April 23rd, 1827. The original dial and pedestal were carved from Guelph limestone, and are in very poor condition. They were moved indoors during renovations in 1979. A replica now stands in the original position. See NASS Compendium Vol. 6 No. 3, Sept. 1999.
Habana La Habana Cuba Horizontal Dial 564
A monumental horizontal dial with rod gnomon and central cannon. First documented sundial in Cuba.
Hagerstown Maryland USA Horizontal Dial 701
A 16 inch octagonal bronze horizontal dial with hour lines and Arabic numerals. Dial face includes boldly raised representations of five different flowers identified by botanic names. Original gnomon has been replaced. Dial is placed atop an octagonal concrete pedestal with stone base.
Halifax Nova Scotia Canada Horizontal Dial 337
The dial is a circle 8 feet in diameter on the ground, with Roman numerals. The gnomon is concrete, stone, standing about 4 foot high It is a memorial to the original black settlers who lived on Campbell Road in Africville and to the members of the Seaview United Baptist Church. The stone sundial, approximately four feet high and eight feet in diameter, rests on a concrete base and points North toward Bedford basin. Inscribed on the side of the monument are the family names of some of the early Africville residents.
Halifax Nova Scotia Canada Armillary Sphere Dial 343
This armillary sphere, made of steel and brass, is approximately 2 meters tall. The dial is the result of a collaboration between students from the 1997 Industrial Engineering class of the Technical University of Nova Scotia (now called DAL TECH) and a local shipbuilding firm who did the construction. The theme of industrial engineering is reflected in the cogwheel-like metal rings used in the construction. Initials of every classmate are punched into the cogs. On the plinth is the Equation of Time.
Halifax Nova Scotia Canada Horizontal Dial 93
Bronze horizontal dial on a granite base. Has Roman numerals showing time noting "Mean solar time in Halifax is 1 hour and 14 minutes behind Atlantic Standard Time."
Halifax Nova Scotia Canada Horizontal Dial 455
This bronze horizontal dial is approximately 25 cm across on a one-meter high pedestal. Both the dial and dedication plate have a blue-green patina. The gnomon is slightly bent and appears to have been re-attached to the dial. The orientation remains true. Roman numerals mark the hours from 5 am to 7 pm. Hour lines plus half-hour marks. The concrete base is badly cracked and small pieces have fallen away. The dial is well-situated in an open area, but a nearby tree might shade the dial near midday during fall, winter, and spring.
Halton Hills Ontario Canada Analemmatic Dial 539
A stone analemmatic dial with engraved seasonal dates and brass hour markers. The dial is located in Lucy Maude Montgomery Garden, built to celebrate the author of the Anne of Green Gable stories and who lived in Norval, now known as Halton Hills.
Hamilton Ontario Canada Analemmatic Dial 341
Construction of the dial and garden was supported by the Richard and Jean Ivey Fund of London, Ontario. An analemmatic dial about 25 feet wide with stone markers and metal numbers.
Hamilton Ontario Canada Gnomonic Dial 856
At first glance this appears to be a gnomonic dial with a concrete vertical gnomon about 15 feet tall casting its shadow onto a horizontal dial face about 60 feet in diameter in a slightly irregular pattern at one corner of a grass park. But something is seriously wrong for this to be a working sundial. Gnomonic dials tell time by the tip of their gnomon. The size of the gnomon implies that only several hours around noon in the summer could possibly tell time. We would expect that the gnomon is displaced from the center of the hour lines proportional to the height times tangent of the latitude. But here, the brick hour lines radiate centrally from the gnomon. More interesting, the hour lines (and their Roman numeral hour designation) are separated by a nearly uniform increment of 18 degrees per hour. That is, only five hours marks span from North to East.
Hamilton New York USA Horizontal Dial 403
A small brass horizontal dial 9 1/2 inches in diameter. Has a compass rose in the center. Hour lines branching to half hour and quarter hour. Roman numerals showing 5am to 7pm. To the south of the gnomon is a graph of the equation of time. Donated to Colgate University by Fred Sawyer. The dial sits upon a rectangular granite column.
Hamilton Ontario Canada Vertical Dial 492
On the outside south wall of the library, about 15 feet above the ground is a vertical dial about one meter square. Dial is declined 18 deg 6 min west. The 1pm and 8pm numbers are missing. The dial is stone with aluminum gnomon and numbers.
Hanover New Hampshire USA Vertical Dial 832
This octagonal vertical sundial is mounted on the due south facing wall of Shattuck Observatory. The dial is painted on wood. The hours are VI to VI (6 am to 6 pm) with lines for half and quarter hours. The thick triangular gnomon is rigidly mounted on the dial face. The dial is in excellent mechanical condition but the paint is flaking badly due to sun and weather exposure.
Hanover Vermont USA Vertical Dial 702
A four foot octagonal dial painted on the south wall of Shattuck Observatory. Dial face has hour lines with 15 minute marks and Roman numerals. Dial need repainting.
Hartford Connecticut USA Pillar Polyhedral Dial 27
This is an 18th century polyhedral dial (dodecahedron). The dial was originally located at The Abbey, Storrington, Sussex, England. Carved stone with ten dials on a dodecahedral, some sunken, some planar. Pillar is about 12 ft. high.