St Cyril and St Methodius Day in the Czech Republic celebrates two Greek brothers who brought Christianity to the Great Moravian Empire.
Saints Cyril and Methodius Day is celebrated as a public holiday in the Czech Republic because they are considered co-patron saints.
The commemoration is held on July 5. The Roman Catholic Church celebrates the feast day of Saints Cyril and Methodius on February 15.
According to legend, on July 5 in 862, the two missionaries came to Moravia from the Balkans to propagate literacy and Christian faith.
Saints Cyril and Methodius were the principal Christian missionaries among the Slavic peoples in Pannonia and Great Moravia.
They are credited with introducing Orthodox Christianity to these areas and influencing the cultural development of all Slavs.
They created the oldest known Slavic alphabet, the Glagolitic alphabet, also known as Glagolitsa.