Here's the beginning of an OJ article that I found amusing...I asked my astrologer friend to comment, see her answer below...
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LAS VEGAS - In a city where luck means everything, O.J. Simpson came out the big loser — and his unlucky number in a case full of bizarre twists was 13.
He was convicted of an armed robbery that happened on Sept. 13 and was found guilty on the 13th anniversary of his Los Angeles murder acquittal. The Las Vegas jury deliberated for 13 hours after a 13-day trial.
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How did the stars line up?
I've definitely seen it in my life, but of course that's only subjective evidence. There's are several discussions going on at the astro.com forum. I can only find one right now;
http://forum.astro.com/cgi/forum.cgi?num=1222140716/187#187
but I'm sure that if you do a search you could find more.
YES, A BIT SUPERSTITIOUS INDEEDY!