Feast of Corpus Christi Procession Sunday June 19th after 8:00 AM Mass at the St. Isidore Parish - St. Celestine Campus. Join us for the traditional Corpus Christi procession immediately following the 8:00 am Mass. We'll adore Christ in the Blessed Sacrament as we process around the grounds, stopping at four outdoor altars for brief prayer and music. (We will be done by the 10:00 AM Mass.