Saints Cyril and Methodius Day

Culture of origin: Christian · Cultural

Holiday sources: Eastern Orthodox · Eastern Orthodox (new calendar)

Cyril and Methodius, the "Apostles to the Slavs", devised the Glagolitic alphabet, the first used for Old Church Slavonic, and from 863 translated the Gospels and the liturgy into it; their disciples later developed Cyrillic. 24 May is a national holiday in Bulgaria, the Day of Bulgarian Education and Culture and Slavonic Script, and in North Macedonia. In Russia it is Slavonic Literature and Culture Day, a church feast (11 May Julian) and not a public holiday.