A more accurate method, then the pocket watch method, to find direction from the sun is the shadow stick method.

Find a spot that is flat and free of vegetation. Place a stick, about 1 m (3 ft), in level ground and mark the tip of the shadow with for example a small stone or stick.

Wait at least half an hour or more. The shadow tip should move about 10 centimeter (4 inch). Mark the tip of the shadow in the same way as the first. Draw a straight line between these two points. This is the east/west line. The first mark is west.

Stand with your left foot on the first mark (west) and your right foot on the line you drew. You are now facing north.

Shadow of stick is shortest at noon. In the northern hemisphere the shadow points north and in the southern hemisphere it points south. You are also probably aware of that shadows are longer in the winter and shorter in the summer.

I had been looking for this kind of information. Thanks for posting them. Now I know how to do this celestial navigation. In this case temperature and the air flow in the atmosphere can also play role that is the reason this type of navigation are mostly preferred during clean skies.