A.D. 2100 December 19–25

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday

Sunday, December 19

  • The Fourth Sunday in Advent
  • O Clavis David

Monday, December 20

  • The Fourth Monday of Advent
  • Eve of Saint Thomas
  • O Oriens

Tuesday, December 21

  • Saint Thomas, Apostle and Martyr
  • The Fourth Tuesday of Advent
  • O Rex Gentium

Wednesday, December 22

  • The Fourth Wednesday of Advent
  • O Emmanuel

Thursday, December 23

  • The Fourth Thursday of Advent
  • O Virgo Virginum

Friday, December 24

  • The Fourth Friday of Advent
  • Christmas Eve

Saturday, December 25

  • The Nativity of our Lord (Christmas Day)