This video was made by a friend named Ilpo Partanen from Helsinki.
The Gleason Map is a useful device for telling time anywhere on the earth according to this example. I suggest that we try to do more tests between north and south latitudes and see how it works. For example, if the earth was not flat is there any way that the times would be coordinated between a point in a northern latitude and a point in a southern latitude. That makes no sense to me if we lived on a globe.