Thinking about this question a little more - during the course of a
complete year, doesn't every point on Earth get 50% light and 50%
dark?
So,
the further North (or South) you go, the more of the 50% shines on the South (or
North) facing wall.
So the
North (or South) pole is the place to go to get the maximum light shining
on the South (or North) facing wall.
Mike Shaw
http://homepage.ntlworld.com/jmikeshaw/
N 53º 21'
24"
W 03º 01' 47"
Wirral, UK.
