Direction from the sun

Amplitudes

North by Your Watch

A Sun Compass

At local noon the sun makes its meridian passage. It then bears due south in the northern hemisphere and due north in the southern hemisphere. Once you have found true north at local noon then it is straightforward to insert the other cardinal and inter-cardinal points around your horizon and then for the rest of the day the sun acts as a check against direction, see Figure 7.1.

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