It is forbidden to light a fire on Shabbat, which extends from sunset on Friday evening until nightfall of Saturday night. Therefore, on Friday afternoon, light the menorah before the Shabbat candles. Shabbat candles are traditionally lit eighteen minutes before sundown. Use additional oil or larger candles for the Friday night Chanukah lights, as they must remain lit until one half hour after nightfall - approximately 1½ hours after the Friday afternoon lighting time. Note: The standard 30-minute Chanukah candles cannot be used on Friday.
For the duration of Shabbat, do not relight any flames that have gone out or move the menorah, nor should you prepare the Saturday night Chanukah lights during the Day of Rest.
On Saturday night, light the menorah after Shabbat ends at nightfall. Traditionally, the menorah is kindled immediately after the havdalah service.
