iCoyote's Other Realities > Superstitions > Friday the 13th
There won't be another Friday the 13th until February of 2009. Then March comes along with another one. And there is one more showing up in November.
Be very afraid! You could deny your fears and superstitions, and go to work anyway, or you could admit to having frigga triskaidekaphobia and make it a 3-day weekend.