iSextant!

iSextant is a sun sign reduction program, that can be used to confirm your location in the event of GPS signal problems. It is important to note that in increasing world orbital use/misuse we are always closer to the http://en.wikipedia.org/wiki/Kessler_syndrome where there is an increasing chance of GPS outage.iSextant can also be used as an aid to learning astro-navigation. For more information about astro-navigation please refer to http://en.wikipedia.org/wiki/Astro_navigation.