Lebanon Liberation Day

Mexico Students' Day on May 23;

National Missing Children's Day in United States on May 25 (and its related observances: - International Missing Children's Day);

National Sorry Day in Australia on May 26;

Ratu Sir Lala Sukuna Day in Fiji on May 27 (The celebrations in honor of Fiji's first modern statesman actually begin a week early);

Lod Massacre Remembrance Day in Puerto Rico on May 30;

Mabo Day in Australia on June 3 (It commemorates Eddie Koiki Mabo [c. 29 June 1936–21 January 1992] a Torres Strait Islander whose campaign for Indigenous land rights led to a landmark decision of the High Court of Australia that, on 3 June 1992, overturned the legal fiction of terra nullius which had characterised Australian law with regards to land and title since the voyage of James Cook in 1770);

Birthday of Carl Gustaf Emil Mannerheim & Flag Day celebration of the Finnish Defence Forces on June 4 (Finland);

Tiananmen Square Protests of 1989 Memorial Day on June 4 (International);

June 4th revolution in Ghana on June 4 (1979);

Day of Remembrance for Children Who Died in Ukraine on June 4 (Day of Remembrance for Children Who Died as a Result of the Armed Aggression of the Russian Federation against Ukraine)