Three Friday the 13ths, 13 weeks apart, a rarity

Three Friday the 13ths, 13 weeks apart, a rarity: It's a bad year for people who suffer from paraskevidekatriaphobia - fear of Friday the 13th.

Why? There are three this year, instead of the usual two. There was one in 2011.

That's not all. For the first time since 1984, these three Friday 13ths - today, April 13 and July 13 - exactly 13 weeks.

Three Friday 13ths to happen every few let.Posledny was in 2009, and further, to 2015. What is special in 2012 - and what does not happen again until 2040 - is that it occurs during a leap year, says Tom Fernsler, University of Delaware professor of mathematics, who sometimes goes by the name of the doctor 13.

It's hard not to feel something on Friday 13th, Fernsler said. "I believe that 95% of people in the world, something superstitious, and the other 5% are liars," he said.

Number 13 and Friday recurring presences in the mythological, spiritual and religious traditions. In Christianity, 13 people attended the Last Supper to "betrayal of Judas and Jesus death on the Norwegian pyatnitsu.Mif warns of adverse consequences for the dining room in groups of up to 13 years. Friday the 13th was the date of the medieval Knights Templar was imprisoned. And although and not as a historical, rapper Tupac Shakur died Friday, September 13, 1996, after a shot on September 7.

For many pagans, 13 is a lucky number because it represents the number of full moons each year, says Ivo Dominguez Jr., owner of Bell, Book and Candle, pagan and occult books and gift store in Dover, Delaware

Although Friday the 13th can feel special, it's not. In the 400-year period, the 13th falls on a Friday than on any other day: 688 times, Fernsler said.

Fernsler made a hobby to find dates and events related to the number 13 and Friday 13 go.Den held several well-known genera, such as Fidel Castro and Butch Cassidy.

Dominguez argues, Friday 13th fears "self-fulfilling prophecy," adding that "there are strong power of the people, convincing himself that something unlucky happens."