While the modern wristwatch slices time into frantic, equal increments of mechanical precision, the sundial offers a version of the day that is inextricably linked to the movement of the heavens. It is perhaps the most honest of all timekeepers, for it does not “keep” time so much as it reveals it. A sundial is a physical manifestation of the Earth’s relationship with its star; it is a mathematical shadow cast upon a stone face. There are no batteries to fail, no gears to jam, and no digital flicker to distract. It exists in a state of perfect, patient submission to the celestial rotation, translating the immense, silent journey of…