The seventh day of Sukkot is called Hoshana Rabba (Great Hoshana).
On the night of Hoshana Rabba it is customary to stay awake, reciting the tikkun and Psalms.
During the morning service of Hoshana Rabba, after the Hoshana prayers, having marched with the lulav seven times around the Bimah, the "Four Kinds" are put away-, and the Hoshanas (willow-branches) are taken in their stead, and beaten upon the floor, while saying a special prayer.