Epiphany on Jan 6 is the start of it's own season in the Liturgical calendar. I realize counting to 12 is hard, but Dec 25 is the First Day of Christmas, so day 12 falls on Jan 5.
The Catholic Church in the United States observes the
Epiphany on the Sunday closest to January 6 (or January 6 itself if the feast falls on a Sunday). The reason for this is that the Epiphany is not as important a holiday for American Catholics as it is for their fellow Catholics in places such as Spain or Latin America, so the Church leaders in the United States agreed to observe
the feast nationally within the context of a Sunday Mass when churchgoers in this country will be able to fully make the most of this beautiful holiday. This, of course, does not take away the fact that the traditional date to observe the Epiphany remains January 6.
The following Sunday commemorates the Baptism of the Lord, which marks the end of the Christmas season in the U.S. Catholic liturgical calendar.
And the story’s writer is apparently unaware that the Baptism of Our Lord is observed on the First Sunday after the Epiphany.