You will probably never need this. But just in case, here’s an explanation from Andy Snyder of Oxford Club’s Manward Digest:
All you need is Polaris… aka, the North Star.
It’s not a bright star, so it’s a bit tough to pick out of the sky without some help. Fortunately, the easy-to-spot Big Dipper has a couple of “pointer stars” that aim right at it.
Simply draw a line between the two stars that form the outer edge of the Big Dipper’s bowl and extend it roughly five times. It should point you right at Polaris, which happens to be the last star in the handle of the Little Dipper.
Because Polaris is the only star in the sky that doesn’t move as the night progresses, it’s the perfect way to know which way is north.
Once you have that figured out, you’re set. Stand looking at the star and you’re headed north… turn left to go west… right to go east… and turn around to go south.