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This Rare Friday the 13th

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."

2 of 239 comments (clear)

  1. Re:Um.. not so phenomenal? by daveo0331 · · Score: 0, Flamebait

    Also Friday, March 13, 2004

    But it won't happen again until January 2024.

    What makes these uncommon is that the digits in the year can't add up to more than 8. Obviously this condition is difficult to meet late in a century, which explains the gap from 1520 to 2004.

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  2. Interesting, but... by throatmonster · · Score: 0, Flamebait

    So fucking what?

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