The twelve days of Christmas isn't capitalized here because it's not a song title but a reference to the day of Christ's birth (celebrated on December 25) and the Epiphany on January 6 in celebration of the coming of the Magi.
It seems in our contemporary secular society that there's really a 30 or so days before Christmas in which to engage in shopping frenzy, a three or so days before Christmas to fonish the wrapping and baking and a few hours to relax before the world resumes at breakneck speed on Wednesday.
It doesn't have to be that way, though. The twelve days of Christmas should be the real time to celebrate Christ's birth, not in the commercial sense but in a spirit of personal reflection and service.
It's not too late to write a letter to a friend, donate service or resources to those in need, visit the ill or infirm or even write a Christmas card. This is only the first day of Christmas.
The shopping (except for exchanges and buying next year's wrapping paper at 50% off) is over. Now can we focus on the real reason for the season?