By comparison, Christmas Day is an anti-climactic also-ran.
Wigilia is an occasion and Christmas Day is no big deal in Poland. New Year's Eve is another big holiday (strengthened in the PRL due to Russian influence?) but epiphany is like Christmas Day, not much happens for most people.
Christmas in America is a festive season (who does advent in the US?) and Christmas Day marks the end of it (no Boxing Day whch I had no idea what it was before I moved to Poland saw references to it on Sky TV).
New Years Eve isn't as big a deal in the US (outside a few big cities) and Epiphany is mostly known where there are orthodox (Greek where I'm from) or from Spanish speaking countries (Christmas isn'ta big holiday in Spain, Epiphany, dia de los reyes magos, has always been bigger). Latin America seems to be a mixed bag in holiday terms....