World Day Against Child Slavery
World Day Against Child Slavery is held on April 16. This event in the second decade of the month april is annual.
International Biomedical Laboratory Science Day on April 15 (is celebrated annually on 15 April to promote and acknowledge the role of biomedical laboratory professionals in diagnostic and preventative healthcare organisations);
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);
World Amateur Radio Day 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);