Shrimp Sandwich Day, celebrated in Sweden every October 14, honors the iconic Swedish shrimp sandwich (räksmörgås), an open-faced sandwich featuring shrimp, eggs, mayonnaise, lemon, and dill. This dish, which is believed to have originated in Denmark and gained popularity in Sweden during the mid-20th century, has become a staple in Swedish cuisine and is widely available in cafes and restaurants across the country. The holiday was established in 2010 by Stockholm Arlanda Airport and Göteborg Landvetter Airport, where shrimp sandwiches are among the most popular items sold, with thousands sold weekly. To celebrate, people often prepare their own shrimp sandwiches at home, using either rye bread or toasted baguette, and incorporating various toppings such as lettuce, cucumber, and additional seasonings.