What is co-latitude?

Co-latitude is the distance from somewhere on Earth to the North Pole, measured in degrees.

Imagine you have a toy globe and a friend who lives far away, maybe in a place like Sydney or Brazil. You want to know how close they are to the North Pole, but not the latitude (which is how far they are from the equator). That's where co-latitude comes in!

Think of Earth as a big playground swing. The North Pole is like one end of the swing, the top, and the South Pole is the other end. If your friend is at the equator, they're right in the middle of the swing, so their co-latitude would be 90 degrees (halfway to the North Pole). But if your friend is at the North Pole, their co-latitude would be 0, they’re already there!

If you live near the equator, like in Kenya, your co-latitude is about 90 degrees. That means you're halfway from the equator to the North Pole! But if you live in Norway, closer to the North Pole, your co-latitude might be just 45 degrees, meaning you’re only halfway there!

So co-latitude helps us measure how close something is to the North Pole, like a fun way to play with distances on Earth.