Question: what are the festivals of judaism?
Answer: Passover.
Rosh Hashanah - Jewish New Year.
Yom Kippur - the Day of Atonement.
Sukkot / Sukkoth.
Hanukkah.
Tisha B'av. Tisha B'av is a solemn occasion because it commemorates a series of tragedies that have befallen the Jewish people over the years.
Tu B'Shevat. ... 
Yom Hashoah.