Why is it called Candlemas Day?

Why is it called Candlemas Day?

This is the day when candles are blessed in the Church and traditionally have been lit in celebration of the feast.

Pope St. John Paul II said, “Christian traditions of the East and West have been interwoven, enriching the liturgy of this feast with a special procession in which the light of candles both large and small is a symbol of Christ, the true Light who came to illumine his people and all peoples.”