Hanukkah is a Jewish holiday also known as the Festival of Lights. It lasts 8 days and is celebrated with a nightly menorah lighting, special prayers, and fried foods. It's celebrated because in the second century BCE, the Seleucids took over and tried to force the people of Israel to accept Greek beliefs and they refused. In fact, the Jews fought back and drove the Greeks off their land and reclaimed their Holy Temple in Jerusalem and rededicated it to God. When they went to light the Temple's menorah, but found only a single cruse of olive oil. They lit the menorah and the one day supply of olive oil lasted 8 days until the new oil could be prepared under a ritual that purified it.