For those who believe in God, no explanation is necessary. For those who do not believe, no explanation is possible. Feast Day Mass Celebration, February 11 at 11 a.m. and 4:30 p.m. Enroll a loved one, to be remembered during this Mass celebration, asking Our Lady to cast a merciful glance upon your intention, one who may be suffering, struggling against difficulties. May our Mother's intercession to her Jesus grant hope and peace to your loved one. On December 8, 1854, Pope Pius IX proclaimed the dogma of the Immaculate Conception in the apostolic constitution Ineffabilis Deus. A little more than three years later, on February 11, 1858, a young lady appeared to Bernadette Soubirous. This began a series of visions. During the apparition on March 25, the lady identified herself with the words: “I am the Immaculate Conception.”