Distance calculation using Haversine formula

Compute the distance between two locations using the Haversine formula

This program calculates the distance between two locations (latitude and longitude) using the Haversine formula. The Haversine formula gives the shortest distance between two points over the earth's surface, ignoring elevation, hills, etc...
The program accepts two inputs that can be locations specified as either degrees, minutes, and seconds or by decimal degrees. The output is the distance in km, n.mi, and miles.

Examples:

haversine('53 08 50N, 001 50 58W', '52 12 16N, 000 08 26E') returns 170.2547

haversine([53.1472 -1.8494], '52 12.16N, 000 08.26E') returns 170.2508

haversine([53.1472 -1.8494], [52.2044 0.1406]) returns 170.2563