The precise origins of Margarita Day are somewhat elusive, but it is believed to have originated in the United States as a way to celebrate and appreciate the classic cocktail. The Margarita itself, however, has a more traceable history. Some credit the creation of the Margarita to a socialite named Margarita Sames, who allegedly concocted the drink during a vacation in Acapulco in the late 1930s.
Others suggest that it was invented by a bartender in Tijuana in the 1940s. Regardless of its exact birthplace, the Margarita quickly became a worldwide sensation and earned its place as a timeless favorite.