Hanukkah, (Hebrew: “Dedication”) also called Feast of Dedication, Festival of Lights, or Feast of the Maccabees, is a Jewish festival that begins on Kislev 25 (usually in December, according to the Gregorian calendar) and is celebrated for eight days. Hanukkah reaffirms the ideals of Judaism and commemorates in particular the rededication of the Second Temple of Jerusalem by the lighting of candles on each day of the festival. This year Hanukkah is celebrated from Monday, December 19 to Monday, December 26.
If you want to know more about Hanukkah: www.history.com/topics/holidays/hanukkah
and/or en.wikipedia.org/wiki/Hanukkah