How to determine the direction using only the sun (and a random stick)

Using the sun as a guiding point may save your life in the wilderness, backwoods, the Sahara or any other place where you find yourself lost and without a compass (or, of course, Google Maps). It’s also an essential skill if your compass fails you. Above all, this give you the chance to brag about your incredible survival skills to friends and strangers.
Ingredients:
1 x sun

1 x long, straight object (a stick)
Time:
15-20 minutes
Execution: