A.D. 2099 December 20–26

Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Saturday

Sunday, December 20

  • The Fourth Sunday in Advent
  • O Oriens

Monday, December 21

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

Tuesday, December 22

  • The Fourth Tuesday of Advent
  • O Emmanuel

Wednesday, December 23

  • The Fourth Wednesday of Advent
  • O Virgo Virginum

Thursday, December 24

  • The Fourth Thursday of Advent
  • Christmas Eve

Friday, December 25

  • The Nativity of our Lord (Christmas Day)

Saturday, December 26

  • Saint Stephen, the first Martyr
  • The Second Day of Christmas