In geography, latitude is the distance on the earth’s surface, north or south
of the Equator, expressed in angular measurements from 0° at the
Equator to 90° (North or South). Southern latitudes can also be
expressed as negative number where -90° is at the South Pole.
Lines of latitude run parallel to the Equator. Latitude and
longitude can be used together
to specify a precise location on the Earth.