Ramv, I dont know if the future will confirm this, but in my yard, Yates ripened a month before Nikita’s Gift. Yates is American, smaller fruit, but awesome flavor. They are seedless and ripened without a male tree.
Back when I bought my Asian persimmon trees from Raintree, they claimed Saijo was the only Asian persimmon they could ripen at their nursery, which I think is around 100 miles NE from me but higher elevation. They didn’t make any claims about Nikita’s Gift. My Saijo are about 2 weeks or so, 0behind Nikita’s Gift.
At the time, Raintree said their Asian persimmons were on D. lotus rootstock. I don’t know if that affects ripening. The Yates is on D. virgiana rootstock
For both Nikita’s Gift and Saijo, I finish the ripening by placing them in a casserole dish with a banana or apple, and cover with plastic food wrap. Without that treatment, I don’t know if they can ripen completely here. They are a orangy color, and firm, before the banana treatment, and in 3 to 5 days become almost jelly-like and deep red. And delicious. An advantage is, by sequentially ripening batches of them, I get to eat them for more than a month.
If I buy grocery store persimmons, J also do the banana treatment, because I like them better with that jelly consistency.
Hope that is helpful info.