There really isn't.
On Sunday we had our flat Christmas. From now until we all travel home for the holidays there are no other free evenings where all five of us will all be in our little flat together - we're busy little bees over at 34c. So we decorated our Christmas tree and had a mini festive dinner to kick off the month long celebrations.
And we had our first kind-of-sort-of snowfall last night, I think - that combined with a tree and upcoming holiday parties... now it feels like Christmas.