Mexico Students' Day
Mexico Students' Day is held on May 23. This event in the third decade of the month may is annual.
Ratu Sir Lala Sukuna Day in Fiji on May 24 (The celebrations in honor of Fiji's first modern statesman actually begin a week early);
National Missing Children's Day in United States on May 25 (and its related observances: - International Missing Children's Day);
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)