Derry Christmas O Come Let Us Adore Him 2018 Christmas Mass Schedule St. Louise de Marillac St. Joan of Arc Church Church Christmas Eve Saturday, December 24 4:00 pm (gym), 4:00 pm (church) 6:00 pm, 8:00 pm and Midnight Mass Christmas Eve Saturday, December 24 4:00 pm, 6:00 pm, 8:00 pm and Midnight Mass Christmas Day Sunday, December 25 Christmas Day Sunday, December 2:5 9:00 am and 11:00 am 9:00 am, 11:00 am and 12:30 pm 320 McMurray Road Upper St. Clair, PA 15241 stlouisedemarillac.org 412.833.1010 6470 Library Rd. South Park, PA 15129 mystjoan.org 412.833.2400