Paraskevidekatriaphobia Its worser than that its double Paraskevidekatriaphobia: If you take the sum of the digits the result is again 13: 10/13/2006 == 1+1+3+2+6 = 13 And this happens the second time this year: 01/13/2006 was the first one. Before that you have to go back to the year 1520 and for a double occurance to the year 1411. hehe