National Play Monopoly Day is observed worldwide on November 19, encouraging people to gather for a board game night centered around the popular game Monopoly. This holiday celebrates the economic-themed game where players buy and trade properties, aiming to bankrupt their opponents. The origins of Monopoly trace back to the early 20th century, with Elizabeth Magie's patent for The Landlord’s Game in 1904, designed to illustrate economic principles. Charles Darrow later popularized the game in the 1930s, leading to its widespread success after Parker Brothers acquired it. While the exact origins of National Play Monopoly Day are unclear, it serves as a fun occasion for friends and family to enjoy the game together, often accompanied by snacks and social media sharing using the hashtags #NationalPlayMonopolyDay and #PlayMonopolyDay.