--Friday the 13th 2010...........--

Friday the 13th occurs when the thirteenth day of a month falls on a Friday, which superstition holds to be a day of bad luck. In the Gregorian calendar, this day occurs at least once, but at most three times a year. Any month's 13th day will fall on a Friday if the month starts on a Sunday.
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~http://en.wikipedia.org/wiki/Friday_the_13th
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~http://www.fridaythe13thmovie.com/
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~http://www.fridaythe13thfilms.com/
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~http://en.wikipedia.org/wiki/Friday_the_13th_%28franchise%29

--International Lefthanders Day 2010--

August 13 is designated International Lefthanders Day by Lefthanders International. It was first observed 13 August 1976. As its name suggests, it is meant to promote awareness of the inconveniences facing left-handers in a predominantly right-handed world. It celebrates their uniqueness and difference, who are from seven to ten percent of the world's population.
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~http://en.wikipedia.org/wiki/International_Lefthanders_Day
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~http://www.holidayinsights.com/other/lefthand.htm
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~http://www.associatedcontent.com/article/5678822/international_lefthanders_day_2010.html