Mark (GunMetal) says about lighthouses...
Contrary To Popular Belief, Water Can Go Down The Drain In Either Direction, Hemispheres And The Coriolis Effect Notwithstanding!!!!
After Much Perusing, Clockwise Rotation Would Be The Standard That Was/Is Used On Premodern Lighthouses...
Maybe you can answer him to say thanks when you thank him for your birthday wishes (below this on your profile page)