Around what time will it be that the sun shines over the wall? (logic/maths question)?

Question

If the wall is 4 meters high, and is on the east, then at what time will the sun be able to shine over the wall?

This is for a story-type thing :D

Thank you!!

Answer 1

You need more details on the question

Answer 2

I don't understand the question but the sun will shine over a wall at noon.