The values used for the radius of the Earth 3961 miles 6373 km are optimized for locations around 39 degrees from the equator roughly the Latitude of Washington DC USA. 37 57 37203 S. 143 55 353839 E.
37 39 101561 S.
Address and DistanceFrom to find as-the-crow-flies distances. 1313327966 x ArcCos Cos a1xCos b1xCos a2xCos b2 Cos a1xSin b1xCos a2xSin b2 Sin a1xSin a2360. The distance between latitudes is about 695 miles. This routine calculates the distance between two points given the.