Christmas is a commemoration of the birth of our Lord Jesus Christ. No one has the accurate time and date when Jesus was born. I am not sure if there was any calendar in place at that time. The current calendars all over the world are around His person and life, dating either before Christ or after His death. We are thankful for those God used to initiate the celebration of Christmas, notwithstanding the possibility of the date coinciding with a pagan celebration. It does not