Here's the sun at twelve-thirty Eastern Daylight Time (not too far from local noon) on the first day of summer.
That's the window wall on the left. The sun reaches almost sixteen inches inside. (And the windows are about fifteen feet tall in the center of the peak.)
At winter solstice, the sun hit the front door at midday, about twenty feet from the south side. (I didn't think to take a picture six months ago.)
(Looky! A post related to the supposed subject of this blog!)