A way to see the actual time corresponding to the longitude of your location.
Daylight saving will probably not work.
If You leave the "Test Custom Longitude" field empty and click the "Get Time" button, then it will ask for your location to get your longitude and then display the actual time corresponding to it, and the "Test Custom Longitude" field will then show your current longitude it got from your location.
If You fill the "Test Custom Longitude" field with longitude of your choice, then it will display the actual time correspoding to the filled longitude.