Black Friday is a major shopping event in the retail industry that takes place annually on the day following the U.S. Thanksgiving holiday. Falling on the fourth Friday of November, Black Friday marks the beginning of the holiday shopping season. Retailers offer substantial discounts, promotions, and doorbuster deals, attracting large crowds of eager shoppers both in-store and online. The term "Black Friday" is said to originate from the idea that retailers move from being "in the red" (operating at a loss) to being "in the black" (profitable) due to the surge in sales during this event. It has become a significant cultural phenomenon, not only in the United States but also in various countries worldwide.