Menorahs lit for Hanukkah.Jacek Boczarski/Anadolu via Getty Images Hanukkah means "dedication" in Hebrew. It's usually in December, but the dates change every year since Judaism follows a lunar calendar. The national menorah lit in Washington, DC, is 30 feet tall and requires a lift from a cherry picker to light. The Jewish holiday of Hanukkah, also known as the Festival of Lights, takes place from December 25 through January 2 this year.Hanukkah celebrates the victory of a small group of Jewish rebels over an enormous Greek army to defend their heritage, and a miraculously long-lasting flame that continues to serve as a symbol of hope and perseverance.