It's scheduled for December 21st, so that's after the olympics, but you can skip buying the Christmas presents. The Earth is going to reverse its poles, so is the sun, we're gong to he hit by an asterisk, the Long Count finishes, the Last Judgement will happen, Auntie Christ will appear, Last Orders will be called, Lord Lucan will be found, Elvis will return, and it will rain or go dark before morning.