Medicinal Sun Dial
Sundials, are the earliest known timekeeping devices. They were first used during the second millennium BC in China, Egypt and the Middle East. In the first century AD, it was discovered that at any given time, shadowns fall in the same direction during all 365 days of the year. This sundial is based on position of the sun adjusted to the longitude and latitutde of Ada. It features hour points rather than hour lines and a moving gnomen (the thing which casts the shadow) namely you.
To tell the time, stand on the center of the plinth so that the middle of your foot is on approximately the correct day in the correct month. Your shadow will fall on the correct local time. Because Ohio is in the middle of the time zone, for EST add 35 minutes to this time, for Daylight Savings Time add 1 hour and 35 minutes.