what is the difference between hanukkah and christmas

Well, Hanukkah is a Jewish holiday that commemorates the rededication of the Temple in Jerusalem after its desecration by the Syrian Greeks. It is observed for eight days and nights, beginning on the 25th day of Kislev on the Hebrew calendar, which typically falls in December on the Gregorian calendar. Christmas, on the other hand, is a Christian holiday that celebrates the birth of Jesus Christ. It is celebrated on December 25th every year.