It ends on Shemini Atzeret, and, outside Israel, it is immediately followed by Simhat Torah.
It is the descendant of the Biblical hag ha-asif, and it is the last of the three Shalosh R'galim on the calendar. Its seventh day is Hoshana Rabba, when the aravah, hadas, etrog, and lulav are carried about. It ends on Shemini Atzeret, and, outside Israel, it is immediately followed by Simhat Torah. It begins on the fifteenth of Tishri. For 10 points, the harvest and years of wandering are commemorated via certain structures on this holiday, often celebrated by sleeping in a makeshift "booth" outdoors?
It is the descendant of the Biblical hag ha-asif, and it is the last of the three Shalosh R'galim on the calendar.
{Sukkot}h [or {Sukkos}]