I wanted to have sun shadows that were appropriate for my house (which is not oriented North-South-East-West.
Using Geolocation, I set the location of my house model by importing the Google image.
I then rotated my house so that it was oriented as per the Google image.
Shadows look great now.
I then changed RGB axes so that they are oriented with the rotated house foundation, so that creating new lines worked with the re-oriented foundation.
Now my Front, Back, Left, and Right views are skewed.
Is there a way to twist my F, B, L, and R views so that they are perpendicular to the appropriate walls?