Polar Orbit

Polar Orbit (PO) satellites are generally Low Earth Orbit (LEO) satellites that have an orbit near or over the poles. These satellites orbit from north to south at low altitudes of around 600 miles and can pass over the north and south poles many times a day.
Typical applications of polar orbit satellites are for observation of the Earth and reconnaissance.
Click on this link to review the wikipedia resource on polar orbiting satellites.
Click on this link to go to a website that contains detailed maps of satellite positions.