Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary, Cathedral and Mulberry Streets; 10:45 a.m.; Archbishop William E. Lori celebrates Mass, local observance of Our Lady of Lourdes feast day (Feb. 11) instituted under St. John Paul II; confession before Mass for those requesting Anointing of the Sick, general blessing for all who are ill; Knights of Malta offering Lourdes water; presentation by Dr. Jacek Mostwin of Johns Hopkins Berman Institute of Bioethics to follow at Catholic Center; mariealberte1115@gmail.com