In Anthroposophy, a field of study developed by Rudolph Steiner, the nights between the nativity and the epiphany, roughly December 25th to January 6th, are thought to be the time when the veils are the most thin between the spirit realm and the human realm.  These nights are the best time of year to set intentions, to plant seeds, and to go inward in prayer and meditation.  Each of the Holy Nights represents a month of the following year.  When close attention is paid during these days, sometimes people get a brief glimpse into their upcoming year.

Maybe it's true or maybe it's not, but regardless, it is still a great time to meditate and set intentions for the new year.  

Update: We just added a new blog post from Claudia McLaren Lainson, an expert on the Holy Nights, if you would like more information.