How many candles are lit on each night of Hanukkah?

During the eight-day festival of Hanukkah, the number of candles lit increases each evening to commemorate the miracle of the oil.12

Following the tradition established by the school of Hillel, one candle is lit on the first night, and an additional candle is added each subsequent night until eight candles are burning on the final evening.12

In addition to these, a special ninth candle called the shammash ("servant") is used to kindle the others each night. While the candles are inserted into the menorah from right to left, they are lit from left to right, accompanied by traditional blessings.134