Simchat Torah: Complete the annual reading of the Torah (Five Books of Moses) after reviewing a portion each week; occurs in the fall.
Shavuot: Commemorates the "covenant" made between God and Jews with the giving of the Ten Commandments and Torah on Mount Sinai; occurs in the spring.
Sukkot: Commemorates Israelites who wandered the Sinai desert for 40 years. Build a sukkah to replicate the moveable huts in which they lived; occurs in the fall.
Tu B'Shevat: Jewish Earth Day, the Birthday of the Trees; takes place in late January or early February.
Yom Ha'atzmaut: Israeli Independence Day; takes place in April or May.
Yom HaShoah: Holocaust Remembrance Day. Memorial to those who were killed in the Holocaust; takes place in April or May.