The variety of these dates is very interesting to me. In our own lives often there are many details in the calendar that are flexible because of one thing or another in the day or week. Even in celebrating a person's birthday...the date may be a certain day of the week but may be celebrated earlier or later. Tongue in cheek there are some birthdays a person may celebrate all year (you know, those huge milestones!).
The message of Christmas should also continue all year. That message is about love and relationships. Consider how to celebrate that love all year long, not just these two days. What are we doing to keep Christmas in our hearts and lives? Not just "the twelve days of Christmas".