OCTOBER 6/TISHREI 21

Hoshanah Rabbah

The seventh and culminating day of Sukkot known as the "final sealing of judgment," is marked by a synagogue service in which seven circuits are made by the worshippers with their lulav, etrog, myrtle and willow leaves, while reciting special prayers. It is also customary to stay up studying Torah the night before.

Brockhaus and Efron Jewish Encyclopedia (Public Domain)