From Slashdot – Juha-Matti Laurio writes to point out a Washington Times story about
how special this particular Friday the 13th is. The digits in the
numerical notation for the date add up to 13 — whether you write it in
the US or the European form. From the article: “The phenomenon hasn’t
happened in 476 years, said Heinrich Hemme, a physicist at Germany’s
University of Aachen who crunched the numbers to find that the
double-whammy last occurred Jan. 13, 1520.” /. Article
Link: The Washington Times article.
Wikipedia: Friday the 13th