Patent ID: 8333016

Claim:
A sundial for providing apparent solar time, the sundial comprising: a. a substantially planar solar dial having: i. an index point and a noon hour point, a longitudinal axis being defined by a line between said index point and said noon hour point; ii. a plurality of concentric latitude indicia centered at said index point; iii. at least one latitude map indicium overlaid by said concentric latitude indicia, said latitude map indicium having geographic latitudes corresponding with said concentric latitude indicia on said solar dial; and iv. a plurality of solar time indicia overlaid on said plurality of concentric latitude indicia and said latitude map indicium and radiating generally outward from said index point so as to intercept said concentric latitude indicia; b. an elongated gnomon having a first end and a second end and when operatively positioned with respect to said solar dial, said first end being located at said index point; and c. a gnomon support element providing support for said second end of said gnomon at a variable angular offset above said solar dial, thereby defining a selective angle of said gnomon with respect to said solar dial; whereby the sun's shadow cast by said gnomon intersects said solar time indicia in relation to said concentric latitude indicia corresponding to the user's geographic location as found on said latitude map indicium to provide a reading of apparent solar time at the user's latitude.