Jan 01 In the year 0001 origin of Christian Era
Mar 25 Origin of Dionysian Incarnation of the Word on this day in history.
Dec 25 On this day in history 1st Christmas, according to calendar-maker Dionysus Exiguus
Dec 25 Christmas, according to calendar-maker Dionysus Exiguus in the year 0001.
Important Dates And Events In History - Hisdates.Com