As part of the events in honor of the holy brothers Cyril and Methodius on May 24, 2021, the Ministry of Foreign Affairs of the Republic of Bulgaria and the Ministry of Foreign Affairs of the Republic of Northern Macedonia in the spirit of the Treaty of Friendship, Good Neighborliness and Cooperation agreed countries, including those in Belgrade, Kiev, Prague and Warsaw, to celebrate together and with appropriate events this important holiday for our common history and for the culture of all Slavic peoples.