13 is a bad number

The number 12 is considered the number of completeness (12 months of the year, 12 signs of the zodiac, 12 hours of the clock, and so on...) while 13, which comes after, lacks that balance. But so widely held is the belief that 13 is unlucky that many hotels do not have a 13th floor and some people prefer not to take the 13th row in a plane.

The Norse myth

According to Norse mythology, the grand feast of 12 gods was gatecrashed by a 13th invited guest – the evil god Loki. Loki tricked Hoor (the blind god of winter) into shooting his brother Baldr (the god of summer) with a magic spear. And because of this 13th unwanted guest, the number acquired negative connotations given that it led to such a great loss in the pantheon.

The Last Supper

Judas Iscariot was the 13th disciple at the last supper (held on a Thursday) who later betrayed Jesus (the next day observed as Good Friday). This might also be the origin of the superstition that if 13 people dine together, whoever leaves the table first would die within the year or become seriously ill.

The hangman works on Friday

Not only was Friday the day designated for crucifixions in Rome, but all executions in late-19th century America were also traditionally held on Fridays and it came to be called hangman’s day.

The execution of the Knights Templar

In his 2003 bestseller Da Vinci Code, Dan Brown highlighted the myth’s most popular origin. It was on Friday 13 October in 1307, when hundreds of Knights Templar were executed across France. According to legend, Templar Grand Master Jacques de Molay cursed the King and the Pope for these murders.

The Americans bought into it big time

According to The North Carolina Stress Management Center and Phobia Institute about 800 to 900 million dollars are lost in USA every year because people choose to stay indoors and not travel or shop on Friday the 13th.

Donald Dossey, the founder of the institute and author of Holiday Folklore, Phobias and Fun, says the fear of Friday the 13th, afflicts 17 to 21 million people in the United States.

The phobia associated with the date is responsible for the enduring success of the “Friday the 13th” horror film franchise that debuted in 1980, and featured a machete-wielding psychopath. The last film in the series came out in 2009.

There have been studies on it!

There have been studies conducted on how accident-prone the date actually is. One study by the Dutch Centre for Insurance Statistics (CVS) found that fewer accidents, reports of fire and theft occur when the 13th of a month falls on a Friday as compared to an average Friday.

“I find it hard to believe that it is because people are preventatively more careful or just stay home, but statistically speaking, driving is a little bit safer on Friday 13th,” CVS statistician Alex Hoen was quoted by a Reuters report on the study.

Should you be worried?

It is unlikely that Friday the 13 will do you any harm, though believing in it might. Remember the idea of time as linear is artificial. Calendars were created for our convenience. And that there were two Friday the 13ths in 2017. If you survived the one in January unharmed, there’s no reason why today should be hard on you.