World Week of Granting Independence to Colonial Countries and Peoples
World Week of Granting Independence to Colonial Countries and Peoples is held on May 25. This event in the third decade of the month may is annual.
World Turtle Day on May 23 (sponsored yearly since 2000 by American Tortoise Rescue, is to bring attention to, and increase knowledge of and respect for, turtles and tortoises, and encourage human action to help them survive and thrive);
World Digestive Health Day on May 29 (On the 29th of May 1958, the last day of the First World Congress of Gastroenterology which took place in Washington, an assembly of distinguished gastroenterologists announced the foundation of the World Gastroenterology Organisation was born.)