No, but Christmas is symbolic anyway - it celebrates the fulfilling of a prediction, if that's what you believe. It's celebrated in the dark of winter because the Romans celebrated Lupercalia and the two came together for convenience. No decent shepherd would have sheep out on the hillsides in winter, and the suggestion that Jesus was born in the spring seems most likely if Gabriel came to Mary in the sixth month (ie June) - if He was born in December, the annunciation would have been in March (which is when Christians now celebrate it, conveniently).