Who is Prime Meridian?

The Prime Meridian is like the starting line for measuring east and west on Earth.

Imagine you're playing a game where you run around a track. The starting line is like the Prime Meridian, it’s where we begin counting how far east or west you’ve gone. Just like your race has a clear beginning, the Prime Meridian helps us know exactly where to start when we measure places on Earth.

Earth is round, and people all over want to know their exact location. The Prime Meridian is a special line that goes through Greenwich, which is a place in London. This line divides the world into two halves, one half is east of it, and the other half is west of it.

When we say someone lives at 45 degrees east or west, we're using the Prime Meridian as our starting point. It's like having a ruler that starts right where you are, so you can measure how far away other places are from you, just on a giant globe!

So next time you see a map with lines going around it, remember: those lines help us find our way, and the Prime Meridian is the one we start counting from.