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Appendix

Sun Path Diagrams*

Sun path diagrams are representations on a flat surface of the

sun's path across the sky. They are used to easily and quickly

determine the location of the sun at any time of the day and at

any time of the year. Each latitude has its own sun path

diagrams.

The horizon is represented as the outer circle, with you in

its center. The concentric circles represent the angle of the sun

above the horizon, that is, its height in the sky. The radial

lines represent its angle relative to due south.

The paths of the sun on the 21st day of each month are the

elliptical curves. Roman numerals label the curves for the

appropriate months. For example, curve III (March) is the

same as curve IX (September). The vertical curves represent

the time of day. Morning is on the right (east) side of the

diagrams and afternoon on the left (west).

Courtesy

Architectural Graphic Standards

by C.G. Ramsey and H.R. Sleeper, John

Wiley

Sons, New York, N.Y. 1972.

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