World UFO Day
World UFO Day, observed annually on July 2, celebrates human curiosity about the unknown skies—marking both the historic 1947 Roswell incident and the first modern UFO sighting in 1947. History of…
American Zoo Day
American Zoo Day, celebrated annually on July 1, honors the opening of the Philadelphia Zoo—the first public zoo in the United States—and highlights the important roles modern zoos play in conservation,…
International Sailor Moon Day
International Sailor Moon Day, celebrated annually on June 30, honors the magical girl heroine Usagi Tsukino—Sailor Moon—and her global community of fans since its founding in 2015. See also: National Anime…
Social Media Day
Social Media Day, celebrated annually on June 30, honors the revolutionary impact of social platforms on global communication since Mashable launched the observance in 2010. See also: Community Media Day, Positive…
International Asteroid Day
International Asteroid Day, observed every year on June 30, commemorates the 1908 Tunguska event and raises global awareness about asteroid threats and the importance of planetary defense. See also: National Meteor…
International Day of the Tropics
International Day of the Tropics, observed annually on June 29, celebrates the extraordinary diversity, culture, and global importance of the tropical regions while recognizing their pressing challenges and future potential. See…
International Fisherman Day
International Fisherman Day, celebrated each year on June 29, recognizes the dedication and invaluable contributions of fishermen around the globe, honoring both their heritage and continuing role in food security,…
World Industrial Design Day
World Industrial Design Day, observed annually on June 29, celebrates the global impact of industrial design and the founding of the World Design Organization (originally ICSID). History of World Industrial Design…
Global Smurfs Day
Global Smurfs Day, celebrated annually on the Saturday closest to June 25, honors the beloved blue characters known as Smurfs and commemorates the birthday of their creator, Pierre “Peyo” Culliford….
International Ragweed Day
International Ragweed Day, observed each year on the fourth Saturday in June, raises awareness about ragweed—a fast-spreading plant whose pollen causes widespread allergies. History of International Ragweed Day International Ragweed…