White Mass for Healthcare Workers: Sunday, October 14, 2018 Posted on March 15, 2018March 11, 2019 by stlouiscma Sunday, October 14, 2018 at 10am Cathedral Basilica of Saint Louis, 4431 Lindell Blvd, St. Louis, MO 63108. Archdiocesan White Mass for health care providers in honor of St. Luke, patron of physicians.