Sundials - World's Oldest Clocks

North American Sundial Society

Selected Sundials of California

Click on any photo or city name to get more sundial details and more photos.

 
 
Oakland California USA Projection Dial 613
One of Bill Gottesman's unique-design Renaissance dials of cast and structural bronze with a 27 inch diameter helix with a celestial-north aligned axis. Time is told by a focused beam of light that moves around the helix throughout the day. The light beam is reflected from a long cylindrical unsilvered mirror in a structure that supports the helix. A sliding time scale within the helix can be adjusted for EOT and DST and includes longitude correction. Once this scale is adjusted for date, the dial shows civil, or clock, time. The dial base is cast bronze allowing adjustment for latitude and placed on a concrete pedestal.
 
 
Oakland California USA Horizontal Dial 236
Large horizontal dial, with steel gnomon 22 ft. long, 14 ft. high. Constructed of three welded pieces of 2-inch thick steel plate, the dial sits in a courtyard. There are no hour lines, only hour markers are placed on the lawn and brick patio around the dial. EOT values for every 5 days are shown on the north face of the support.
 
 
Oberlin Ohio USA Calendrical Dial 63
When is a flag pole more than a flag pole? When it has cement walkway curved for the summer solstice, a path for the winter solstice and a distinguishing straight cement line for the spring and fall equinox. This dial has no hour markers, and is intended to show the seasons. The tip of the flag pole will follow these lines at the appropriate day of the season.
 
 
Oberlin Ohio USA Vertical Dial 219
Once, high on the physics building south wall was a student made vertical dial. The 5'x8.5' resin coated particle board made by Mark Kearns in 1979 had curved hour lines to account for the equation of time, declination of wall, and offset from standard meridian. This dial has not been on display for some time. Perhaps some student would create a new dial. The brick wall is an excellent location.
 
 
Ocean Shores Washington USA Horizontal Dial 842
This large horizontal dial has a gnomon in the shape of an anchor and concrete minimalist dial surface in the shape of a triangle, keeping the theme of the location "Triangle Park". Three time Arabic hour numbers of 9, 12 and 3 are embedded into the concrete slab and two other time marks of 6am and 6pm are on separate pads located outside the main dial area.
 
 
Oliver British Columbia Canada Horizontal Dial 809
A lovely horizontal dial with an 8-foot high stainless steel gnomon. The hour lines are done as colorful alternating red and cream segments set in a 8-foot radius semi-circle. The gnomon is triangular in cross section with a single thin edge casting the shadow. The dial hour numbers are set for daylight, since all of the winery's 100,000 annual visitors are seasonal, coming when Pacific Daylight Time is in place.
 
 
Olympia Washington USA Horizontal Dial 319
John W. Elliot, a Seattle master craftsman designed and execute the Territorial Sundial. The 6 foot dial is hand-hammered in brass with a bronze rod gnomon. The dial plate has eight bas-relief panels depicting events in Washington State's history including the discoveries of Captain George Vancouver in 1792, the Medicine Creek Treaty between the US and Puget Sound Native Americans in 1854 and the first railroad to Puget Sound, built in 1883. The dial rests on a large slab of Wilkenson sandstone, the same material used in the nearby State Library, supported by four, one foot nine inch tall piers.
 
 
Omaha Nebraska USA Horizontal Dial 598
A 7.5 foot diameter horizontal dial of water jet cut sheet bronze and cast bronze side molding with a 45 inch high gnomon. Very large Roman numerals show hours from 10 AM to 5 PM in Daylight Saving Time with longitude correction. The bronze dial rests on a short concrete and brick pedestal.
 
 
Omaha Nebraska USA Equatorial Dial 653
A five foot granite equatorial dial on a granite and stone pedestal with a 5 inch diameter stainless steel gnomon extending through the dial face. Arabic hour numerals for 4 AM to 9 PM are shown on the north face and for 6 AM to 7 PM on the south face. Dial is within the Henry Doorley Zoo which may require admission to see the dial, which is a memorial to Marcia Bekins Shepard. Dial sits on a granite disk atop a mortared stone pedestal.
 
 
Omaha Nebraska USA Horizontal Dial 654
A cast bronze horizontal dial with Roman hour numerals and fifteen-minute marks on a pedestal in a stone courtyard. Dial face includes a depiction of an hour glass with wings and a motto, GROW OLD ALONG WITH ME THE BEST IS YET TO BE. Dial sits on a three foot high fluted circular cast pedestal.
 
 
Omaha Nebraska USA Armillary Dial 655
A five foot diameter stainless steel armillary dial with central gnomon rod and equatorial, horizon, meridian and equinoctial colure rings. CST and CDST hours are marked with Arabic numerals. The dial rests on a polished black granite base of two supporting arms. The dial is located at the center of the Robert H. Storz Family Rose Garden within Lauritzen Gardens. Dial sits atop a two-arm polished black granite base approximately 4 feet tall. Viewing the dial requires paid admission to the Gardens.
 
 
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.
 
 
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.
 
 
Oracle Arizona USA Horizontal Dial 6
A brightly colored horizontal dial 4 feet in diameter. Dial is white ceramic with tile edging. Hour lines are bright arrows, adjusted for local longitude. At the north point is a graph of the Equation of Time and at the south point is the bright face of a sun. Ringing the dial is an inscription. Base is a concrete "flower" approximately 2 feet high. Near by is an approximately 15 foot long Noon Mark or Meridian Line with the months of the year marked on it. The shadow is cast by a small electric power pole.
 
 
Orange Massachusetts USA Vertical Dial 527
A vertical sundial built from Eastern White Pine local-grown timber. The dial face is 35x44 inches and the gnomon is a 3 inch long aluminum rod. Hour lines include analemmas and the spring and fall lines are painted different colors with corresponding dates identified. Solstice and equinox lines are shown.
 
 
Orlando Florida USA Horizontal Dial 37
This plain dial formed on a concrete base has an elegant gnomon, designed with an interior curve and oval. But alas, don't go to Florida to find it. Sometime in 2013 as Harcourt closed its Florida office, the new tenet had no use for the sundial and had it scheduled for demolition.
 
 
Orlando Florida USA Obelisk Dial 294
Bronze, granite An obelisk which, at the noon hour, will cast a shadow on a noon mark plaque positioned on the ground.
 
 
Orlando Florida USA Pillar Dial 89
Reconstruction of a 4-sided pillar dial.
 
 
Oro Valley Arizona USA Analemmatic Dial 871
This analemmatic sundial is painted on concrete. It is similar to John Carmichael's human sundial at Flandrau Planetarium at the University of Arizona. The orange background was painted by hand with acrylic paint on top of the blue acrylic court surface. Lettering and other markings were painted with Rustoleum spray enamel using stencils from Stencilease.com. Final touch up painting was done by hand. It took a three man team ten days to paint. It's quarter hour time marks are longitude corrected and shows Standard Time when readings are adjusted using the Equation of Time. It includes a central Date Line for standing, using monthly and weekly marks. There is a Solar Noon mark, and Bailey Points to indicate the direction of sunrise and sunset.
 
 
Oro Valley Arizona USA Combination Dial 713
A massive, 24 foot tall combination almost-vertical and calendrical dial facing southwest so that northeast bound traffic can easily view the dial. The 13 foot diameter vertical ring dial of welded, zinc-coated steel declines 45? west and reclines 12? from vertical. The 3 inch diameter, 20 foot long polar-pointing gnomon tube is supported in space by a 10 inch diameter support tube with a cone nodus on the bottom end. The vertical dial shows longitude-corrected MST with hour and half-hour marks and Arabic numerals on the outer stainless steel chapter ring. The calendrical dial solar noon line is a bronze plaque atop a triangular, fin-shaped concrete pedestal and inclined at the latitude angle, allowing the equinox mark to be in the center of the date line with the indicating shadow cast by the cone nodus on the bottom of the gnomon support tube. Other significant dates indicated include the solstices, date of dial dedication, date of Oro Valley incorporation and the date of Arizona statehood. As of July, 2012 the date line of the calendrical dial remains fully designed but incomplete and uninstalled so this portion of the dial is not functional. Dialist John Carmichael reports this is the most difficult and complex project he has designed. The dial base is a modern sculpture of welded steel plates by artist Jon Seeman. This 10,600 pound monumental dial was three years in design and fabrication.