This article, originally published on Dec. 3, 2015, has been updated to reflect 2016 dates.

Hanukkah, the Jewish Festival of Lights, is celebrated for eight days beginning at sundown on Dec. 24, 2016. On the Hebrew calendar, the dates are 25 Kislev to 2 Tevet in the year 5777.

An eight-day celebration, Hanukkah commemorates the rededication of the Second Temple in Jerusalem in the second century B.C. during the Maccabean revolt against oppressive Greek rulers. Jews celebrate the holiday by lighting a nine-branch candelabrum, commonly called a menorah. (Technically, the candelabrum for Hanukkah is called a hanukkiah to distinguish it from the seven-branch menorah used in the Temple and described in Exodus 25 .)

The story of Hanukkah is one of revolution and miracles: Greek influence over the Jews in the land of Israel had become an affront to Jewish culture and ritual. Antiochus, the Greek ruler, forbade Jewish religious practice, so a small group of Jews, the Maccabees , revolted. These Jews eventually prevailed and, as a first order of business, restored the Holy Temple, which had been desecrated. The menorah in the Temple needed to be re-lit because, according to tradition, it should burn continuously. The Temple liberators found one vial of olive oil, enough for one day of light. Miraculously, the oil lasted for eight days.

Today, Jews everywhere light menorahs on each night of Hanukkah . Traditionally, one candle or flame is lit for each night until the eighth night, when all eight lights shine together. The menorah has a ninth helper flame known as the shamash used to light the other candles. This is necessary because in Jewish law, the Hanukkah lights only purpose is to visually proclaim the miracle of the holiday. Jews place the lit menorah in a prominent window in order to fulfill this commandment.

Gift giving is now a common practice on Hanukkah, and it is therefore a beloved time for many Jewish children. Fried potato pancakes (latkes ) and doughnuts (sufganiyot ) are traditional fare, and a spinning top (dreidel ) with four Hebrew letters has become synonymous with the holiday . The letters nun, gimel, hei, shin form an acronym for the message of Hanukkah: A great miracle happened there.