13 Freaky Facts About Friday the 13th
LiveScience Staff
Date: 12 July 2012 Time: 06:22 PM ET
9. For pagans, 13 is actually a lucky number. It corresponds with the number of full moons in a year.
10. President Franklin D. Roosevelt is said to have avoided travel on the 13th day of any month, and would never host 13 guests at a meal. Napoleon and President Herbert Hoover were also triskaidekaphobic, with an abnormal fear of the number 13.
11. Mark Twain once was the 13th guest at a dinner party. A friend warned him not to go. "It was bad luck," Twain later told the friend. "They only had food for 12." Superstitious diners in Paris can hire a quatorzieme, or professional 14th guest. [13 Odd Occurrences on Friday the 13th]
12. Stock broker and author Thomas W. Lawson, in his 1907 novel "Friday the Thirteenth," wrote of a stockbroker's attempts to take down Wall Street on the unluckiest day of the month. Reportedly, stock brokers after this were as unlikely to buy or sell stocks on this unlucky day as they were to walk under a ladder, according to accounts of a 1925 New York Times article.
13. This fear of Friday the 13th can be serious business, according to the Stress Management Center and Phobia Institute in Asheville, N.C., which, among other things, offers therapy to help people overcome their fear of the freaky friday. Their estimates suggest hundreds of millions of dollars, up to $900 million are lost due to people's fear of flying or doing the business as usual that day, though that number isn't backed up with other estimates.