As David mentioned, this month is Yom Kippur, the most Holy Day of the year on the Jewish calendar. Also Sukkot, or the Feast of Tabernacles, begins at sundown on October 8.
Sukkot, the last of the last annual festivals found in Leviticus 23, is like a bookend to the Feast of Passover, the first of those holidays listed. Passover is but one day, but combined with the Feast of Unleavened Bread it lasts for eight days; Sukkot lasts seven days, and is followed on the eighth day by what the Bible calls “a holy convocation.” Passover focuses on how God redeemed us out of Egypt, and Sukkot reminds us that after the redemption He blessed us with His presence and provision.
You’ll find great articles, videos and all kinds of resources; plus, you’ll be able to see if we are holding holiday services near you at both these links!