Kalevala Day, also known as Finnish Culture Day, is observed in Finland every February 28. This day commemorates the publication of the Kalevala, the national epic of Finland, which was first compiled by Elias Lönnrot in 1835 from Finnish and Karelian mythology and oral folklore. The celebration of this day serves to honor Finnish culture and heritage, with the Finnish flag being flown from all public buildings from 8 AM to sunset. The Kalevala played a crucial role in shaping Finnish national identity and influenced the country's language strife, contributing to Finland's declaration of independence in 1917. The day is marked as one of Finland's official flag days, emphasizing its cultural significance.