Events · Facts & sources
4 sourced facts about Fridays -- superstition, shopping and the end of the work week, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Answer17-21 million
This specific phobia even has a name: paraskevidekatriaphobia.
Source: Stress Management Center & Phobia Institute (via Wikipedia) (2020) en.wikipedia.org
Answerabout 22% more
In-store foot traffic fell sharply that year while online shopping surged.
Source: Adobe Analytics (via Wikipedia) (2020) en.wikipedia.org
Answerover $100 billion
Total Black Friday spending has climbed steadily even as the share of shoppers who specifically plan to shop that day has fallen.
Source: Wikipedia (Black Friday (shopping)) (2025) en.wikipedia.org
Answer$800-900 million
Some people avoid travel, big purchases, or even work on the superstitious date.
Source: Wikipedia (Friday the 13th) (2020) en.wikipedia.org