GreatCirc

GreatCirc is a tool that helps you calculate the distance between two places on Earth using a great circle. The great circle is the shortest path between two points on the surface of a sphere. GreatCirc can also display the points and the line of the circle on a map of the Earth.

GreatCirc is useful for various purposes such as travel planning, aircraft and ship tracking, and research. It is also a fun application that you can use to explore different places on Earth.

To use GreatCirc, enter the names or coordinates of two places between which you want to calculate the distance. The program will then display the distance in kilometres, miles and nautical miles. GreatCirc will also display points and circle lines on a map of the Earth.