In Bulgaria it is celebrated on 24 May and is known as the "Bulgarian Education and Culture, and Slavonic Literature Day" (Bulgarian: Ден на българската просвета и култура и на славянската писменост), a national holiday celebrating Bulgarian culture and literature as well as the alphabet. It is also known as "Alphabet, Culture, and Education Day" (Bulgarian: Ден на азбуката, културата и просвещението). SS Cyril and Methodius are patrons of the National Library of Bulgaria. A monument of them is present in front of the library. SS Cyril and Methodius are the most celebrated saints in the Bulgarian Orthodox church, and icons of two brothers can be found in every church.
