Day of Remembrance for the Victims of the Caucasian War in Abkhazia (Circassian Day of Mourning)
Celebrated on 21 MayDay of Remembrance for the Victims of the Caucasian War in Abkhazia (Circassian Day of Mourning)
Other holidays on 21 May
- UN Holidays - International Tea Day
- International holidays - International Space Day
- UN holidays - World Day for Cultural Diversity for Dialogue and Development
- Russian Holidays - Polar Explorer Day
- Russian Holidays - Military Translator Day
- Russian Holidays - Day of the Pacific Fleet of the Russian Navy
- Funny Holidays - World Rose Day
- Russian holidays - Unemployment Protection Day
- Russian holidays - BTI Workers' Day (Inventory Day)
- Holidays of Kazakhstan - Day of Workers of Culture and Art
- Holidays in Bulgaria - Predoj
- Holidays of Montenegro - Independence Day
- Holidays of Greece - Pirovassia (fire walking) (Anastenaria)
- Holidays of Bulgaria - Day of Equal-to-the-Apostles Tsar Constantine and his mother Queen Helena
- According to the folk calendar - Ivan the Dolgy
- Memorial Day of St. John the Evangelist (patron saint of authors, editors and publishers)
- Memorial Day of St. Arseny the Great