|Angular distance, Φ, north or south, from the equator. Values can range from 90° north (the North Pole) to 90° south (the South Pole) with the Equator, exactly halfway between, being 0°. latitude and longitude
Lines of latitude are always parallel to each other and run east and west, demarcating positions north and south.
When north and south are not specified, positive angles are north and negative numbers are south.
A degree of latitude on the surface of the Earth is about 111 km (60 nautical miles, 69 statute miles).
See also longitude and lat-lon.