On a cloudless night, drive a stick into the ground until the tip of it is at your eye level. Behind it, plant a taller stick such that the tips of the sticks line up on a bright star, as you look at them. After a few minutes, the star will appear to have moved (but remember: stars don't move; it's Earth that's rotating).
If the star seems to move . . .
- up, you are facing east.
- down, you are facing west.
- right, you are facing south.
- left, you are facing north.