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If you venerate Friday the 13th , then batten down the hatches . This hebdomad ’s ill-starred twenty-four hour period is the first of three this year .

The next Friday the 13th hail in March , followed by Nov. 13 . Such a triple whammy comes around only every 11 years , say Thomas Fernsler , a math specializer at the University of Delaware who has study the number 13 for more than 20 years .

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By the numbers

Here are 13 more facts about the infamous day , courtesy of Fernsler and some of our own inquiry :

2.Theill - fated Apollo 13launched at 13:13 CST on Apr. 11 , 1970 . The sum of the day of the month ’s digits ( 4 - 11 - 70 ) is 13 ( as in 4 + 1 + 1 + 7 + 0 = 13 ) . And the explosion that lame the ballistic capsule occurred on April 13 ( not a Friday ) . The crowd did make it back to Earth safely , however .

A mosaic in Pompeii and distant asteroids in the solar system.

3.Many infirmary have no way 13 , while some grandiloquent building hop the 13th storey .

4.Fear of Friday the 13th — one of the most popular myths in science — is called paraskavedekatriaphobia as well as friggatriskaidekaphobia . Triskaidekaphobia is care of the number 13 .

5.Quarterback Dan Marino wore No . 13 throughout his career with the Miami Dolphins . Despite being a brilliant quarterback ( some call him one of the serious ever ) , he got to the Super Bowl just once , in 1985 , and was trounce 38 - 16 by the San Francisco 49ers and Joe Montana ( who wore No . 16 and acquire all four Super Bowls he diddle in ) .

Woman clutching her head in anguish.

6.Butch Cassidy , ill-famed American railroad train and depository financial institution robber , was born on Friday , April 13 , 1866 .

7.Fidel Castro was born on Friday , Aug. 13 , 1926 .

8.PresidentFranklin D. Rooseveltwould not go on the 13th Clarence Shepard Day Jr. of any calendar month and would never host 13 guests at a repast . Napoleon and Herbert Hoover were also triskaidekaphobic , with an abnormal fear of the numeral 13 .

a two paneled image. On the left, the Statue of Liberty during a lunar eclipse. On the right, a mummy with a scan of the skeleton inside.

9.Superstitious diners in Paris can hire a quatorzieme , or professional 14th guest .

10.Mark Twain once was the 13th Edgar Albert Guest at a dinner party . A ally warned him not to go . " It was risky hazard , " Twain afterwards told the ally . " They only had food for 12 . "

11.Woodrow Wilson considered 13 his lucky identification number , though his experience did n’t support such faith . He come in Normandy , France on Friday , Dec. 13 , 1918 , for repose talks , only to pass with a accord he could n’t get Congress to sign . ( The ship ’s crowd require to dock the next day due to superstitions , Fernsler said . ) He tour the United States to rally supporting for the treaty , and while travel , suffered a near - calamitous stroke .

A two paneled image. On the left, a microscope image of the rete ovarii. On the right, an illustration of exoplanet k2-18b

12.The number 13 suffers from its position after 12 , according tonumerologistswho consider the latter to be a complete turn — 12 months in a yr , 12 signs of the zodiac , 12 gods of Olympus , 12 labors of Hercules , 12 tribes of Israel , 12 Apostelic Father of Jesus , 12 daylight of Christmas and 12 testis in a 12 .

13.The seals on the back of a dollar bill let in 13 step on the Great Pyramid , 13 stars above the bird of Jove ’s chief , 13 warfare arrows in the eagle ’s pincer and 13 leaves on the olive branch . So far there ’s been no grounds tying these long - ago design decision to the present economic situation .

Origins of Friday the 13th

Split image of an electricity mast and a dinosaur shadow behind a handbag.

Where ’s all this superstition total from ? Nobody knows for certain . But it may see back to Biblical times ( the 13th guest at the Last Supper betrayed Jesus ) . By the Middle Ages , both Friday and 13 were considered toter of defective fortune .

Meanwhile the belief that numbers are link to life story and physical things — call in numerology — has a foresighted story .

" you may trace it all the mode from the followers of Pythagoras , whose axiom to describe the cosmos was ' all is figure , ' " enounce Mario Livio , an astrophysicist and generator of " The Equation That Could n’t Be Solved " ( Simon & Schuster , 2005 ) . thinker who studied under the famous Greek mathematician combined numbers in different ways to explicate everything around them , Livio said .

Catherine the Great art, All About History 127

In modern times , numerology has become a case of paratrooper - skill , much like themeaningless anticipation of astrology , scientists say .

" masses are subconsciously drawn towards specific numbers because they get it on that they need the experiences , attributes or moral , associated with them , that are contained within their potential , " says professional numerologist Sonia Ducie . " Numerology can ' make sense ' of an individual ’s life ( wellness , career , human relationship , situations and issues ) by recognise which identification number cycle they are in , and by giving them clearness . "

Mathematicians dismiss numerology as having no scientific meritoriousness , however .

A digital image of a man in his 40s against a black background. This man is a digital reconstruction of the ancient Egyptian pharaoh Ramesses II, which used reverse aging to see what he would have looked like in his prime,

" I do n’t endorse this at all , " Livio said , when ask to gloss on the popularity of commercial numerology for a story prior to the escort 06/06/06 . Seemingly coincidental connections between number will always seem if you look hard enough , he said .

Xerxes I art, All About History 125

Queen Victoria and Prince Albert, All About History 124 artwork

All About History 123 art, Eleanor of Aquitaine and Henry II

Tutankhamun art, All About History 122

An image comparing the relative sizes of our solar system�s known dwarf planets, including the newly discovered 2017 OF201

an illustration showing a large disk of material around a star

a person holds a GLP-1 injector

A man with light skin and dark hair and beard leans back in a wooden boat, rowing with oars into the sea

an MRI scan of a brain

A photograph of two of Colossal�s genetically engineered wolves as pups.

Radiation Detection Manager Jeff Carey, with Southern California Edison, takes a radiation reading at the dry storage area during a tour of the shuttered San Onofre Nuclear Generating Station south of San Clemente, CA