@BoingBoing @chr1sa The idea for this 3D sundial may come from a Martin Gardiner column: "What in Heaven is a Digital Sundial?" August 1991
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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@BoingBoing@RiverKey2640 As for season, I think it will have to be GMT (adjusted for longitude) all year round.Thanks. Twitter will use this to make your timeline better. UndoUndo
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@BoingBoing@RiverKey2640 Latitude, in Northern Hemisphere, is accounted for by pointing the gnomon north at true, geographic noon.Thanks. Twitter will use this to make your timeline better. UndoUndo
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