Here's why this is important:

* Altitude: MEO orbits are typically between 2,000 and 35,786 kilometers (1,243 to 22,236 miles) above Earth's surface. GPS satellites orbit at about 20,200 kilometers (12,550 miles).

* Orbital Period: This altitude results in an orbital period of about 12 hours.

* Coverage: The combination of altitude and orbital period allows GPS satellites to provide global coverage, meaning they can be seen from anywhere on Earth.

Let me know if you have any more questions about GPS or orbits!