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Black Friday is regarded as the busiest shopping day of the year in the United States. Stores open in the early morning hours the Friday after Thanksgiving and offer special sales in preparation for the Christmas holiday.

Exactly why the kick-off to the Christmas shopping season was dubbed Black Friday is up for debate. Some historians say the name originated in Philadelphia in the early 1960s. Residents would use the phrase to describe the disruptive traffic that day after Thanksgiving. During the 1970s financial analysists said that Black Friday refers to the day that most retailers finish operating in the red — at a loss, and begin operating in the black — making a profit.