The Nines Prayer - Using the Rambam's Yovel
I mentioned the "Nines Prayer" in the past here in 5770 and again in 5772. In short, the Berit Menuha brings down that there is a nice Segula to pray in the ninth year after Yovel, in the ninth month (Kislev), in the ninth day of the month, and the ninth hour of the day.
It was assumed from the original Kupat Ha'ir announcement 4 years ago that the ninth year after Yovel was 5770. According to comment #1 in a Kikar article back then, the Kupat Ha'ir Rabbanim assumed so since Haza"l always consider 2 years after Shemitta "the ninth year". 5770 was 2 years after the Shemitta year of 5768.
Now, Kupat Ha'ir came out with an announcement - and as also seen on Shirat Devorah - that apparently trumps the previous announcements. That is - that according to the Rambam, every year that ends in "15" and "65" is a Yovel year. Therefore, 5765 is a Yovel year, which makes 5774 the ninth year after Yovel.
There is a FAQ in Hebrew here and in English here.
The ninth of Kislev this year falls out on Tuesday, November 12th. The window this year is 9 minutes - between 1:44 – 1:53 PM Israel time. Kupat Ha'ir says that Rav Wosner Shlit"a said the whole world should pray according to Israel time, so East Coast USA would be 6:44-6:53 AM and Chicago would be 5:44-5:53 AM.
As with all halachot, ask your LOR.