Black Ribbon Day in Lithuania
Black Ribbon Day in Lithuania is held on August 23. 1939. This event in the third decade of the month august is annual.
International Day of Remembrance for Victims of Violence Due to Religion or Belief on August 22 (International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief - established since May 28, 2019 - UN A/RES/73/296);
National Day of Service and Remembrance in United States on September 11 (September 11 attacks-related observances);
Day of Remembrance of Salvador Allende in Chile on September 11 (The anniversary of the 1973 military coup);