Final answer:
After the seven-day Jewish festival of Sukkot, the holidays of Shemini Atzeret and Simchat Torah are celebrated. Shemini Atzeret is a day of assembly marking the end of Sukkot, while Simchat Torah celebrates the conclusion and restart of the Torah reading cycle.
Step-by-step explanation:
The holidays that immediately follow Sukkot are Shemini Atzeret and Simchat Torah. Sukkot itself is a seven-day Jewish festival, also known as the Feast of Booths or Tabernacles, which celebrates the gathering of the harvest and commemorates the Israelites' wandering in the wilderness.
After Sukkot, Shemini Atzeret is observed, which is a day of assembly and marks the end of the Sukkot festival. The following day is Simchat Torah, a celebration marking the conclusion of the annual cycle of public Torah readings and the beginning of a new cycle.