Are people in your neck of the world also getting married like there's no tomorrow on this 'magical' date?
Those numbers are kind of a magic spell (as well as today's date) they work in the same way as 'knock on wood' does (i.e. not at all -but they're very memorable).
WHY is it special? What does it mean? Where does it come from? Wait.. are you not allowed to tell us. Is it a Nordic secret.
^Obviously it doesn't work if you insist on counting time ass-backwards It's magic, that's how it's special, a bit like the hero of a fairy-tale always has to do three tasks... why three? -because three is more magic in the number three than in two and four put together! 7-9-13 are primes, perhaps that's why folk-'wisdom' has ordained them with super-magic powers!?! Ancient stuff, this, as I wrote; you say the numbers (and / or kock on wood three times) to ward off Nemesis.
Well that movie did suck, maybe if it had opened in the Nordic lands first y'all could have stopped it from traveling south.
I only know of the 1934 film... but I guess you're right we could have stopped it -don't know the film though so I don't know that we would've.
^Right! -don't really know what I was thinking there Here's the thing: Seven is an ancient lucky number. Nine is this extra magic you get when you have three threes and three is the most magic number of all (the Christian god is comprised of three deities - three brothers given each three tasks and the winner takes the princess and half the kingdom -thatmagic). Thirteen is also an ancient lucky-number. The expression "7-9-13" apparently is rather new: it was first found in print in 1913.
I'm sure it's been brought up already, but 9 is 3x3. The prime series you are thinking of is probably 7-11-13.