silently corrects or discards entered coordinates on clicking save, would probably be better to have a popup asking if the following corrections is correct, or leave it as entered.
problem case: you enter a coordinate, it gets changed to whatever, then you realize it was wrong, go back in and enter the new one slightly incorrectly, it gets coordinate-not-okay'd, but the user never sees that it was rejected and the old one remains.
If invalid coordinates are entered, it will now prompt you and prevent you from proceeding without (a) good or (b) blank field.
i've rounded the coordinates to 6 decimal places
silently corrects or discards entered coordinates on clicking save, would probably be better to have a popup asking if the following corrections is correct, or leave it as entered.
problem case: you enter a coordinate, it gets changed to whatever, then you realize it was wrong, go back in and enter the new one slightly incorrectly, it gets coordinate-not-okay'd, but the user never sees that it was rejected and the old one remains.
also, 12 decimal places for minutes is probably.... unnecessary. https://xkcd.com/2170/