August 21 Holidays and Memorable Dates: Blackberry Day Gladiolus Day International Dаy of Remembrance and Tribute to the Victims of Terrorism Internet Self-Care Dаy No Makeup Dаy Old Wineskin Day Oratorical Art Day Poet`s Dаy Slavic holiday "Stribog Day" Wild Herb Harvest Day World QR Code Day #Russian Officer's Day Philatelist Day (Día del Filatelista Argentino) - Argentina Women's Football Day (Día de la Futbolista Argentina) - Argentina Gold Cup Parade - Canada Civil Aviation Day (Día de