Fortunately, Christmas should be EEEEEEEEASY for ASA. All 4 of our colors, both jewels, one of our Exemplars, and two of our symbols fit PERFECTLY with Christmas. Heck, Christmas is an ASA High Holy Day (lol).
Actually, you could make our dear sister/Moderator, 33girl, very happy and make it a "Christmas in July/Christmas at the Beach" and throw in another symbol.