Runeberg Day is celebrated on February 5th in Finland to honor the poet Johan Ludvig Runeberg, who significantly influenced Finnish literature and national identity. This day brings people together to appreciate his works, especially "The Tales of Ensign Stål," and to reflect on Finnish culture. Traditional customs include baking and enjoying Runeberg cakes, which are filled with raspberry jam and topped with icing. People also read Runeberg’s poetry aloud, host themed gatherings, and visit libraries or museums to explore his contributions. The celebration emphasizes the importance of literature in shaping Finnish identity and heritage, making it a cherished event in the country.