Answer:
Hanukkah is a Jewish festival that lasts eight days, commemorating the 'oil miracle' in Jerusalem's Second Temple in 164 BC. The first day of this festival begins after sunset on the 24th day of the Jewish month of Kislew.
The feast marks the rededication of the Second Temple in 164 BC celebrated by Judas Maccabeus. After the rededication, according to the description of the miracle of the oil in the Talmud, only one jar of kosher oil was available to burn the menorah during the cleansing of the Temple. However, the jar did not run out until fresh pure oil was prepared, but poured enough oil to keep the menorah burning for eight days. Therefore, Hanuka ends at the end of the eighth day of festivities.