Holidays calendar December 1999‹ November 1999January 2000 ›DatePopular holidaysOther holidays and observances1 WednesdayWorld AIDS Day2 ThursdayInternational Day for Abolition of Slavery3 FridayInternational Day of Persons with Disabilities4 Saturday5 SundayInternational Volunteer Day for Economic and Social Development6 Monday7 TuesdayInternational Civil Aviation Day8 Wednesday9 Thursday10 FridayInternational Animal Rights Day,Human Rights Day11 Saturday12 SundayWorld Choral Day,Worldwide Candle Lighting Day13 Monday14 Tuesday15 Wednesday16 ThursdayDay Of Reconciliation17 FridayWright Brothers Day,Underdog Day18 Saturday19 Sunday20 MondayGames Day21 Tuesday22 Wednesday23 Thursday24 Friday25 SaturdayChristmas Day26 SundayBoxing Day27 MondayChristmas Day (substitute day)28 TuesdayBoxing Day (substitute day)29 Wednesday30 Thursday31 FridayNew Year's EveSuccess!Error!