Sundials - World's Oldest Clocks

North American Sundial Society

Selected Sundials of Texas

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San Ygnacio Texas USA Equatorial Dial 571
A stone equatorial dial with an iron gnomon. Inscribed on both sides with hour lines. Placed above an entrance to a walled fort also built in 1851. Legend says Jose Villarreal designed and built the dial to celebrate his escape in 1820 as a child after capture by Lipan Apache Indians and being guided by the north star in his return home. Dial Recorder Mary Garza is the great-great-granddaughter of Jose Villarreal.
 
 
Waring Texas USA Vertical Dial 870
This is a rare American stained glass sundial, accurately telling time and season. It occupies the center panel of a five panel window that forms a cross. The vertical sundial panel measures 28x28 inches and declines 48° west of south, so it only functions in the afternoons. The dial is longitude corrected and indicates Daylight Saving Time when readings are adjusted using the Equation of Time. The gnomon is a 3/4 inch brass ball nodus attached by a non-polar axis rod to the aluminum Sussman window frame. It is the only stained glass sundial in the world that uses frosted colored stained glass to enhance the view of the nodus shadow. It has three seasonal date lines, a solar noon mark, and other marks showing special anniversary dates. It contains the traditional fly, seen on the the lower yellow panel between 1pm and 1:30pm.
 
 
Wills Point Texas USA Horizontal Dial 884
This starburst sundial is 6-3/4 inches in diameter, made of 1/8 inch aluminum plate. The dial is actually set in a 12-point compass rose, showing the azimuth every 30 degrees. Time marks are every 15 minutes with hours in Arabic numerals. All marking, latitude, longitude, and inscription are engraved into the dial plate.