Let us bless the light
On February 2, we celebrate the Feast of the Presentation of Our Lord Jesus Christ in the Temple. Since that's a mouthful, this celebration is usually just called Candlemas.
This day marks six weeks since Jesus's birth - the appointed time for all firstborn sons to be presented in the temple for consecration unto the Lord. Upon his arrival in the temple, Jesus is recognized by the elderly Simeon and Anna for who he is - the long-awaited messiah!
In celebration of Jesus being a "light for revelation to the Gentiles" (as Simeon prays), Candlemas is generally celebrated by blessing a church's candles for the coming year. Hence the name Candlemas!