I always get nervous this time of year when I look at the calender on my kitchen wall. According to that document, there are no days after December 31. I always fear the end of everything, until the VFW sends me a new calender in the mail, and I see that we have been granted another year of existence.
I suppose if someone digs up an old copy of one of these 2,000 years from now, they will wonder how we "predicted" the end of the world every 12 months.