Hanukkah ( HAH-nə-kə; Hebrew: חֲנֻכָּה khanuká, Tiberian: khanuká, usually spelled חנוכה, pronounced [χanuˈka] in Modern Hebrew, [ˈχanukə] or [ˈχanikə] in Yiddish; a transliteration also romanized as Chanukah or Ḥanukah) is a Jewish holiday commemorating the rededication of the Holy Temple (the Second Temple) in Jerusalem at the time of the Maccabean Revolt against the Seleucid Empire. Hanukkah is observed for eight nights and days, starting on the 25th day of Kislev according to the Hebrew calendar, which may occur at any time from late November to late December in the Gregorian calendar. It is also known as the Festival of Lights and the Feast of Dedication.
The festival is observed by lighting the candles of a candelabrum with nine branches, called a Hanukkah menorah (or hanukkiah). One branch is typically placed above or below the others and its candle is used to light the other eight candles. This unique candle is called the shamash (Hebrew: שמש, "attendant"). Each night, one additional candle is lit by the shamash until all eight candles are lit together on the final night of the holiday. Other Hanukkah festivities include playing dreidel and eating oil-based foods such as doughnuts and latkes. Since the 1970s, the worldwide Chabad Hasidic movement has initiated public menorah lightings in open public places in many countries. Wikipedia