In a sense, Sukkot has two ” last days” — Hoshanah Rabbah and Shiminei Atsaret. The “last day and greatest day of the Feast” (John 7:37) is Hashanah Rabbah (also translated ‘the last day of the Great Feast ‘, mentioned in John 7:37.
During the Temple service, it was customary to make one procession around the altar on each day of Sukkot, and seven on the seventh day”. The priests would carry palm or willow branches in their hands — two of the four ‘species’ used to celebrate Sukkot, and contained in the “lulav”. The Temple ceremony was one of rejoicing and gratitude for a blessed and fruitful year.
Jesus and the “last day of the Great Feast”
Another ceremony, called the water libation ceremony also took place during Sukkot.
“On the last and greatest day of Feast [of Sukkot], Yeshua stood and cried out loudly ‘if any man thirst, let him come to me and drink. The one who believes in Me, as the Scriptures has said, out of his belly will flow streams of living water. “
Just below, is an excellent article , written by Adam Eliyahu Berkowitz , about this ceremony .
” The Eighth Day”
The day after Hoshanah Rabbah is the so-called “8th day” of the 7-day Feast of Sukkot called Shiminei Atzaret.
After commemorating so many significant occasions, including Yom Teruah (referred to currently as Rosh Hashanah), the ten days of Awe followed by the holiest day of the year, Yom Kippur, then the seven day Feast of Tabernacles called Sukkot, G-d asked for one more day as a sabbath. There are no special activities – no shofar, no fasting, no sukkah, no lulav. Just one more today together – just Him and us.
Tonight at sundown (Sunday October 23, 2016) until tomorrow at sundown, is this ‘last day’ of the great feast, which we take for- and with Him.