Angelo Rizzuto, photographer

I was looking at this Library of Congress collection of Angelo Rizzuto photographs from the 1950s/1960s:

https://www.loc.gov/search/?fa=contributor:rizzuto,+angelo

One that caught my eye was this one:

source: https://www.loc.gov/item/2020636826/

There are five sets of windows high up but the middle one doesn't emit the sunbeams, why ??  It must be something mundane like a cloud passing by or a building casting a shadow.

But it makes me wonder :)

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm