World Amateur Radio Day
World Amateur Radio Day is held on April 18. Every April 18, radio amateurs worldwide take to the airwaves in celebration of World Amateur Radio Day. It was on that day in 1925 that the International Amateur Radio Union was formed in Paris. This event in the second decade of the month april is annual.
Malbec World Day on April 17 (Malbec is a purple grape variety used in making red wine. MWD is celebrated to commemorate the day when president Domingo Faustino Sarmiento of Argentina officially made it his mission to transform Argentina's wine industry. On that day, back in 1853, he tasked Michel Aimé Pouget, a French soil expert, to bring over new vines);
Blah Blah Blah Day on April 17 (is the opportunity to stop procrastinating and get to grips with all those stalled projects and broken promises right now);
Ford Mustang Day on April 17 (The Ford Mustang was first introduced to the world in April of 1964);
Auctioneers Day on April 17 (is one of the world’s most ancient professions, having begun more than 2,000 years ago. Third Saturday of April);
Dancing Cow Day in Denmark on April 18 (On the third Sunday of April);
World Bicycle Day on April 19 (The events of the first LSD trip in April 19, 1943, now known as “Bicycle Day”, after the bicycle ride home, proved to Hofmann that he had indeed made a significant discovery: a psychoactive substance with extraordinary potency, capable of causing significant shifts of consciousness in incredibly low doses);