The Time of Sukkot
Tabernacles falls in the autumn of the year. On the Hebrew calendar it occurs on the 15th day of Tishri, the seventh month (usually late September to mid-October), only five days after the solemn Day of Atonement. The Feast of Tabernacles lasts for seven days. The first day and the day after Tabernacles (the eighth day, known as Shemini Atzeret) are considered sacred assemblies, or sabbaths. (Lev. 23:36, 39). As such, no work or any kind is permitted on these days.
Leviticus 23:36, 39 - Seven days ye shall offer an offering made by fire unto the Lord: on the eighth day shall be an holy convocation unto you; and ye shall offer an offering made by fire unto the Lord: it is a solemn assembly; and ye shall do no servile work therein. 39 - Also in the fifteenth day of the seventh month, when ye have gathered in the fruit of the land, ye shall keep a feast unto the Lord seven days: on the first day shall be a sabbath, and on the eighth day shall be a sabbath.