Hanukia

Make a lampstand of pure gold. Hammer out its base and shaft, and make its flowerlike cups, buds and blossoms of one piece with them
Six branches are to extend from the sides of the lampstand
three on one side and three on the other
(Exodus 25.31-32)

Hanukkah is observed for eight nights and days, starting on the 25th day of Kislev according to the Hebrew calendar, which may occur at any time from late November to late December in the Gregorian calendar. The festival is observed by lighting the candles of a candelabrum with nine branches, called a menorah or hanukkiah

all the assembly of Israel determined that every year at that season the days of dedication of the altar should be observed with joy and gladness for eight days, beginning with the twenty-fifth day of the month of Chislev

(Macabeem 1 4.59)