Fruits and Nuts: Persimmons, 1 by Clementine

Clementine wrote:
Here is my question about the Jiro persimmon, see picture below (with my Saijos). they are hard as rocks, but acc. to the "Fruits and Exotics" website posted earlier, they should be ripe in October. When I try to pinch them, they don't give AT ALL.

We are supposedly getting a frost tonight and a freeze tomorrow. Should I pick them? And if so, how should I store them until they are ripe? I had only one or two fruits last year and don't remember how they behaved.

Thanks for your advice,
C.