Genocide Remembrance Day of the Roma and Sinti in Poland
Genocide Remembrance Day of the Roma and Sinti in Poland is held on August 2. Dzień Pamięci o Zagładzie Romów i Sinti, set on the anniversary of the Roma and Sinti exterminaton at Auschwitz concentration camp, established in 2011. This event in the first decade of the month august is annual.
Assyrian Martyrs Day on August 7 (Assyrian community);
National Peacekeepers' Day in Canada on August 9 (celebrated on Sunday closest to the day);
Nagasaki Memorial Day in Japan on August 9 (Nagasaki Peace Park is a park located in Nagasaki, Japan, commemorating the atomic bombing of the city on August 9, 1945 during World War II);
End-of-war Memorial Day in Japan on August 15 (when the National Memorial Service for War Dead is held);
San Martin Day in Argentina on August 16 (the third Monday of the month);
International Day of Remembrance and Tribute to the Victims of Terrorism on August 21 (adopted by the UN on October 27, 2017)