Answer:
*there is not a Christmas eve eve. it would be on the calender.
*As the previous person said it does not exist on the calendar but hey! if you wish to start a family tradition on Christmas eve, eve go for it! Our family revolves around the schedules of the people that work so this year we are having a Christmas Eve, Eve and I can promise you it will be as legitimate as any Christmas Day. Jesus will show up as He always does and memories will be made!
*In some places, Christmas Eve eve is called "Tipp's Eve." It's an old tradition for people to celebrate the holiday with their friends and family before spending most of Christmas Eve in church