Bartender and Mixologist Day is observed worldwide on the last Saturday of June to celebrate the skilled individuals who create and serve cocktails. This informal holiday was established by Jace Shoemaker-Galloway, a freelance writer and cocktail enthusiast, to honor the art and science of mixology. People celebrate by visiting their favorite bars, asking bartenders for surprise cocktails, and leaving generous tips. Additionally, individuals may read books on mixology and host cocktail parties to experiment with making various drinks. The day highlights the differences between bartenders, who primarily serve drinks, and mixologists, who focus on creating innovative cocktails. Bartender and Mixologist Day complements other related observances, such as World Bartender Day on February 24 and Bartender Appreciation Day on the first Friday of December.