The lamp is a nine-branched candelabrum, which used to be lit during a Jewish holiday — Hanukkah. It was celebrated for 8 days, during which one candle was lit every day at dusk or when stars appeared in the sky. The Hanukkah lamp has an additional, ninth candle known as the “shamash”. It was set slightly apart and used to light the remaining eight candles. The candelabrum was typically placed next to the front door or by a window with a view of the street.