Which would you be more interested in: an end of year game jam or start of year game jam?

I'm thinking of pulling together an 8 hour game jam in the near future. My idea is either to end the year right by making a game on December 31st, or starting the year right by making a game on January 1st or 2nd. Does this sound like fun to you? If so, which would you be most likely to actually participate in?