Bulgaria: Alphabet Day celebrated in Sofia.

Sofia, Bulgaria - May 25, 2026 Bulgarians celebrate the Day of Bulgarian education, culture and the creation of the Slavonic alphabet during a national festival in Sofia, Bulgaria on May 25, 2026. The annual celebration commemorates brothers Cyril and Methodius, who invented the first alphabet for Slavic languages in 855. (Video by Zhou Hailun, Wen Qi/Xinhua/Sipa USA) *** World Rights Except China *** CHINA OUT ***