For the calculation of the VSAT site location it is important to consider the coordinates using the measurement of Longitude and Latitude. Latitude is the angular distance north or south of the earth's equator, measured in degrees along the meridian of the earth. Lines of Latitude are parallel lines around the earth that represent the angle of line from the surface of the earth through the center of the earth with respect to the earth’s axis of rotation. The equator is the Zero Latitude line.