In the 6th century, Feb. 2 (39 days after Christmas) was declared the Feast of the Purification of Mary. The theme of purification remained a link between the two holy days. Christ is called a light for revelation.
Candles are brought to church to be blessed by the priest on Feb. 2. In Hungary, according to Dorothy Spicer in The Book of Festivals, Feb. 2 is called Blessing of the Candle of the Happy Woman. In Poland, it is called Mother of God Who Saves Us From Thunder. (2)