National Lobster Day is observed in the United States on June 15, celebrating the culinary delight of lobster. While some also recognize it on September 25, the day encourages people to enjoy lobster in various forms, with boiling and dipping in melted butter being the most popular method. Historically, lobster was considered a food for the lower classes and even served in prisons, but it gained popularity among New Yorkers and Bostonians in the mid-19th century. Today, it is often viewed as a luxury food. A common way to enjoy lobster on this day is through a lobster roll sandwich, which is made by mixing lobster meat with a flavorful sauce and serving it in a hot dog roll lined with lettuce. The day presents an opportunity for culinary exploration, inviting people to try new lobster dishes.