Assuming the world doesn't end on 12-21-12 pegged as the “end of the world” based on the Mayan Calendar, you then have only a little over a month to brace yourself for 2013. Just a few weeks more and you’d be joining in the chorus of the Auld Lang Syne, watching the fireworks and coming up with your New Year's resolution. But don't forget to pick out a new calendar! In case you haven't yet decided on what theme you're going to use for next year's calendar, here are 15 awesome designs that you can take inspiration from.