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How the Sundial works...On a sunny day, suspend the sundial by its black satin cord. Through a tiny hole, a thin ray of sunshine will illuminate a number on the inside of the dial showing the time of day. How the Stardial works...Set the middle wheel to the month, hold the dial upside down, and sight the North Star through the center hole. Move the top of the dial's arm to align with the uppermost stars of the Big Dipper, and read the time on the inner dial where the arm crosses the hour mark!