September 12 is the Feast of the Most Holy Name of Mary.
Excerpts from the Breviary for the Feast of the Most Holy Name of Mary (Sept. 12)
It is said: And the Virgin's name was Mary. Let us speak a few words upon this name, which signifieth, being interpreted, Star of the Sea, and suiteth very well the Maiden Mother, who may very meetly be likened unto a star. A star giveth forth her rays without any harm to herself, and the Virgin brought forth her Son without any hurt to her virginity. The light of a star taketh nothing away from the Virginity of Mary. She is that noble star which was to come out of Jacob, whose brightness still sheddeth lustre upon all the earth, whose rays are most brilliant in heaven, and shine even unto hell, lighting up earth midway, and warming souls rather than bodies, fostering good and scaring away evil. She, I say, is a clear and shining star, twinkling with excellencies, and resplendent with example, needfully set to look down upon the surface of this great and wide sea.