The Cyrillic script or azbuka is an alphabetic writing system. It is based on the Early Cyrillic, which was developed in the First Bulgarian Empire during the 9th century AD at the Preslav Literary School. It is the basis of alphabets used in various languages, past and present, in parts of the Balkans and Northern Eurasia, especially those of Slavic origin, and non-Slavic languages influenced by Russian. As of 2011 around 252 million people in Eurasia use it as the official alphabet for their national languages. About half of them are in Russia. Cyrillic is one of the most used writing systems in the world.
Bulgarian alphabet has 30 letters now but when my grandma was studying there were a few more that she told me got removed.
People in front of the Library putting floral wreaths at the statue
These are Saints Cyril and Methodius who created the Glagolitic and Cyrillic alphabets in order to translate the Bible and other texts into the Slavic languages.
Back home we celebrate on 24 May the „Bulgarian Education and Culture, and Slavonic Literature Day“ (Ден на българската просвета и култура и на славянската писменост), it’s a national holiday celebrating Bulgarian culture and literature as well as the alphabet, Saints Cyril and Methodius Day.
In Sofia we have a Statue of the two Saints in front of the SS. Cyril and Methodius National Library
This is the Glagolitic alphabet or Glagolitsa which is the oldest known Slavic alphabet from the 9th century. We don’t study this one in school.
Also in school we were taught that the word azbuka comes from the first letters of the Glagolitsa.