A Mexican holiday that commemorates the Mexican army's impro …
The festival is observed by the kindling of the lights of a unique candelabrum, the nine-branched Menorah or Hanukiah, one additional light on each night of the holiday, progressing to eight on the final night. The typical Menorah consists of 8 branches with an additional raised branch. The extra light is called a shamash (Hebrew: שמש, "attendant" or "sexton") and is also lit each night for the purpose of lighting the others, and is given a distinct location, usually above or below the rest. The "shamash" symbolically supplies light that may be used.
-taken from Wikipedia