Hi! Very glad you shared this :) There is a third way to do it. You can also avoid using a mod by having a map theme that corrects this. See the "finding north" section of this guise for the map theme setting to corrrect the backwards sun rotation :)
I just learned this from the guide, so I will have it correct in any new map theme I make http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=875340826