There is the shadow tip method.
True, but test it before relying on it. I was discouraged to find that there was a substantial error factor. Maybe it's a higher lattitude issue? I dunno.
It is a combination of lattitude, time of day (itīs good around high noon) and time of year. You may get up to 30 or 40 degrees of systematic error (that is without fouling anything up). Just take a look at the face of a sun dial and you get an idea of it.
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