31, 7, 58 giza
take a number as your starting point, this will be called as a GRID VECTOR.
divide out the ARC DEGREES, then divide out the ARC MINUTES, then the remainder is the ARC SECONDS
we will use (STONEHENGE = 21,600) in the following example...
literally right there on top of it
so beware the folks that say, "yeah, but it isn't exactly 44" ... remember the saying "a stones throw as the crow flies" ...
a stones throw as the crow flies