Bulgarians pay tribute to Cyrillic script forefathers on St Cyril and Methodius Day

https://www.euronews.com/my-europe/2025/05/24/bulgarians-pay-tribute-to-ancient-founders-of-slavic-script-in-ceremony-marking-holiday
Bulgarians turned out en masse on Saturday to
honour the legacy of Saint Cyril and Methodius,
the founders of the Cyrillic alphabet, during
one of their most important cultural and national
holidays in the Balkan country.
...
The two were born in today's Greece in the 9th
century and are credited with creating Glagolic,
an alphabet that was later adapted by multiple
scholars across the Balkans and evolved into the
Cyrillic alphabet.
...
Sometimes referred to in Bulgaria as "Spiritual
Easter," 11 May and 24 May are now recognised as
the "Days of Bulgarian Education and Culture and
of the Slavic Alphabet."
...