Beginner Gardening: Nanking Cherry Harvest Help, 4 by NEgardenguy

NEgardenguy wrote:
Our neighbor was really into permaculture and had kind of an urban orchard growing in his backyard. He sold his place and the new owner didn't want anything to do with any of it. He couldn't take any of his trees with him to his new place so he let us transplant as much as we wanted into our yard.

We ended up moving a couple 3-n-1 trees (pear/apple), a gooseberry, and two Nanking Cherries. Long story short, fast forward a couple years and we are looking at potentially our first harvest. But I've never had Nanking before and am a little lost when to harvest. When is a good time to harvest? And what signs should I be looking for to know when they are at their peak?