Find north without compass but your watch. by knarx:
Here is what you need:
1. a watch (like written in the intro) 2. the sun (you don't have to have a good sight, you just have to barely know the position of the sun)
Point the little needle towards the sun. Now look onto the angle between the little needle and the 12 o'clock mark. Take the middle of the angle and imagine a drawn line from the middle of the watch along the middle of the angle. The imagined line will show you South. In the opposite is North. Before 6 AM and after 6 PM always take the middle of the smaller angle.