Christmas Eve Mass @ St. John’s, Mt. Vernon admin July 28, 2017 Calendar When: December 24, 2016 @ 4:00 pm – 5:00 pm America/Chicago Timezone 2016-12-24T16:00:00-06:00 2016-12-24T17:00:00-06:00 Where: St. John the Baptist Church Mount Vernon IA Prelude Music to start at 3:15 pm