Greek Genocide Remembrance Day
Greek Genocide Remembrance Day is held on May 19. Greece. This event in the second decade of the month may is annual.
Mullivaikkal Remembrance Day on May 18 (Sri Lankan Tamils);
National Missing Children's Day in United States on May 25 (and its related observances: - International Missing Children's Day);
Ratu Sir Lala Sukuna Day in Fiji on May 25 (The celebrations in honor of Fiji's first modern statesman actually begin a week early)