How To Construct A Human Sundial page 176 Created for PHCA By Dick Heckathorn 26 October 2K + 5

Locate your latitude and longitude. Parma Hts Christian Academy Latitude = o Longitude = o

Determine where you wish to locate your sundial. If on the ground, choose a major axis of 5 meters. If on a blue canvas, measure the longest length (15-16 ft). Then select a major axis 0. 4 m less

Program Needed Use the following source to find coordinate points It is recommended that one use a minimum of Daylight Savings Time but it is worthwhile to do both,.

Gather the necessary materials. Meter sticks Marking material Optional: Blue Canvas, ft long Locate the coordinate points using the following procedure.

Locate the 4 am point where X-coordinate = m, Y-coordinate = m Locate the 5 am point where X-coordinate = m, Y-coordinate = m Locate the 6 am point where X-coordinate = m, Y-coordinate = m Repeat for the March -> December data. Locate the remaining hour points Draw a straight line in an East-West Direction equal to the chosen length of the major axis. P.H.C.A D.S.T. JAN FEB MAR APR MAY JUN JUL AUG SEPT OCT NOV DEC EW Draw a N-S line that bisects the E-W line m m m m m m Locate the Jan point (-0.80 m) on the vertical axis. Locate the Feb point (-0.58 m) on the vertical axis.

It is critical to locate the coordinates in a true E-W and N-S direction. True North can be located by using the activity “Using Shadows to Determine Geographic North”

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