National Ramen Day is observed worldwide on April 4 each year, celebrating the popular Japanese noodle dish, ramen. The holiday highlights the dish's rich history, which dates back to the early 20th century when modern ramen originated in Yokohama Chinatown. Ramen consists of Chinese-style wheat noodles served in a flavorful broth, typically made from pork or chicken, and is accompanied by various toppings such as barbecued pork, seafood, and vegetables. The first specialized ramen shop opened in Tokyo's Asakusa district in 1910, and the dish gained widespread popularity after World War II, particularly with the introduction of instant ramen in 1958. People celebrate National Ramen Day by dining at their favorite ramen restaurants, experimenting with homemade ramen recipes, or participating in ramen cook-offs. The holiday has been recognized since at least 2017, and enthusiasts often share their celebrations on social media using hashtags like #NationalRamenDay and #RamenNoodleDay.