Instead of fooling with magnetic headings, why not use the shadow cast by
the tower at local noon? Its shadow will point true north at local noon!
Now... How to determine local noon? Just use the SH/SUN command in
PacketCluster! SH/SUN 8P sez sunrise is 0938Z and sunset is 2225Z.
Assuming these times are correct, local noon is midway between those
times, if my math is right, local noon in 8P is at 1601Z.
Just mark the tower's shadow at 1601Z and thats true north! I assume
sunshine isn't a big problem in 8P...
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