* The North Star's Altitude: The North Star's altitude (its angle above the horizon) *does* directly correspond to your latitude. If you're at the North Pole, the North Star is directly overhead (90 degrees). At the equator, the North Star sits on the horizon (0 degrees).
* "Off the Horizon" is Not Specific: Saying the North Star is "off the horizon" doesn't give us enough information. It could be 1 degree off, 30 degrees off, or any angle in between.
To determine your latitude:
1. You need to measure the North Star's altitude. This can be done with a sextant, a protractor, or even a simple piece of string and a weight.
2. The angle you measure is your latitude.
Important Notes:
* This method works best in the Northern Hemisphere. The South Pole doesn't have a bright "South Star" for reference.
* The North Star is not perfectly aligned with the North Pole, but it's close enough for practical purposes.
* You'll need a clear night sky and a good view of the horizon to accurately measure the North Star's altitude.