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True south app
Hi Peter,
If you have an android tablet or phone, download an app called Solar Polar Align. It will calculate true south for your location during the day as you need any vertical shadow or edge. You can do this at any time during the day it will automatically adjust the angle.
Basically once it calculates, you align the small middle parallel lines with your vertical shadow and the sides of the tablet/phone are aligned to true south and top and bottom are at 90 degrees so you can get a plank of wood and put the 2 rear legs against the wood.
The app updates every 2 mins. Ensure the small middle line with the bulb on the end is pointing towards the sun as that represents sun direction.
Regards
Kon
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