May 24 holds significant cultural and historical importance for Bulgarians, marking the celebration of the Bulgarian Education and Culture, and Slavonic Literature Day, known as "Saints Cyril and Methodius Day." This day commemorates the brothers Cyril and Methodius, who are credited with devising the Glagolitic alphabet, which later evolved into the Cyrillic script. The Cyrillic alphabet is used by many Slavic languages, including Bulgarian, Russian, Serbian, and Ukrainian, among others.The brothers translated much of the Bible into Slavonic. And they and their successors also translated other religious texts, including some important Old Testament Pseudepigrapha that might otherwise have been mostly lost.[...]
The day is celebrated on 24 May in Bulgaria, Ukraine, Macedonia, and Russia, and on 5 July in Slovakia and the Czech Republic. The Roman Catholic Church celebrates their saints' feast day on 14 February. It is celebrated on other days in other churches. For posts on these various days and on Old Church Slavonic in general, see here and links, plus here and here.
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