The 5th Day of Kwanzaa
The 5th day of a week long festival celebrating the African American people, their culture and their history.
On the fifth day the black candle is lit, then the farthest left red, the farthest right green, the next red and then the next green candle. This represents the 5th principle of Kwanzaa – Nia (NEE-ah): Purpose.
source: Kwanzaa on the Net – Seven Days of Celebration