Carl,
Last year the Lord gave me a dream of a calendar page being highly esteemed (valued) in the future, which had written on it the first day as the new year, and then the 21st day of that year being highlighted. In Nisan, the 21st day is always day 7 of Passover. And in the fall, the 21st day is always day 7 of Sukkot, and Hoshana Rabbah. My understanding is that this will be a great day in the future millennium. As Zechariah mentions that during the millennium Sukkot will be celebrated by all nations, I believe this is the day of the Lord's return.
 
God bless