Overview This function set allows you to calculate the distance between two points on the surface of the Earth. Coordinates of locations are now entered in the standard Latitude and Longitude order instead of Longitude and Latitude order. You can set the default answer to be in Kilometers, Miles or Nautical miles so that an extra conversion is no longer necessary. Each primary button has on-line help using the RPN help system. See the example screen below.
North latitudes are positive, south latitudes are negative.
Your home longitude is 79 degrees 26 minutes West. Enter 79.26 Press hlon x - Calculate the distance between two locations who's decimal latitude and longitude are the top 4 elements on the stack and return the answer in kilometers. 11040.323390 which is the answer in kilometers. 6860.138907 which is the answer in miles. 3841.085897, which is the answer in miles.