In celebration of the Irish feast day, this parade begins on the corner of King and Radcliffe streets, makes its way down to Broad Street, and ends at the Cathedral of St. John the Baptist. Watch a procession of step dancers, fiddlers, marching bands, and more. An 8 a.m. mass will be held at St. Patrick’s Catholic Church and an Irish flag will be raised over City Hall at 11:30 a.m. King & Radcliffe sts. Monday, 10am. Free. www.aohcharleston.com