Sun path diagrams

From NCARB’s practice exam:

Refer to the exhibit.
A new recreation center is being proposed in the northern United States. The current design calls for the entire
north wall of the gymnasium to have floor-to-ceiling glass. The owner is concerned about direct sunlight shining into
the gymnasium in the mornings and evenings.
For which one of the following months will the potential for direct sunlight be the greatest concern?
A. March
B. May
C. September

I’m not sure how you read this diagram based on the limited info, can someone please explain?

Hi @potoczakhalle ! Thank you for your question.

A previous episode of our ARE Live covers this topic really well, and I recommend you check it out!

Let us know if you have any further questions.

Happy studying!

Kiara Galicinao, AIA, NCARB
Black Spectacles