From Zohar Pinchas #827, 828
Zohar Yom Kippur
“וַתָּנַח הַתֵּבָה בַּחֹדֶשׁ הַשְּׁבִיעִי, בְּשִׁבְעָה-עָשָׂר יוֹם לַחֹדֶשׁ, עַל, הָרֵי אֲרָרָט”
“and in the seventh month, on the seventeenth day of the month, the ark came to rest on the mountains of Ararat”
“וְהַמַּיִם, הָיוּ הָלוֹךְ וְחָסוֹר, עַד, הַחֹדֶשׁ הָעֲשִׂירִי; בָּעֲשִׂירִי בְּאֶחָד לַחֹדֶשׁ, נִרְאוּ רָאשֵׁי הֶהָרִים”
“And the waters decreased continually until the tenth month; in the tenth month, on the first day of the month, the tops of the mountains were seen”
Noah’s Ark rested on the mountains of Ararat on the seventeenth day of the seventh month. It is the month of Tishrei (Libra), a time that we celebrate Rosh Hashanah, Yom Kippur, Shofar, and Sukkot with the Lulav and Etrog. The Seventeenth day of the seventh month is the third day (Tiferet) of Sukkot.
After the two days of Rosh Hashanah judgment is going down and the aspect of mercy (Chassadim) is increased in the world. The waters of the flood recede because of the increased Light in the world.
Yom Kippur is a the day when our vessels are purified and ready for the Light of Chassadim. This Light increases during the holiday of Sukkot until Simchat Torah that comes 12 days after Yom Kippur.
It is the beginning of the year and in order to have a great year we should be ready for this awesome Light.
Rav Berg of blessed memory passed away between Yom Kippur and Sukkot, on the 12th of Tishrei, a time that a great Light of Chassadim is revealed in the world.