National Rice Ball Day is observed worldwide every year on April 19. This day celebrates a variety of rice ball dishes from different cultures, with a particular focus on Japanese onigiri, which are typically triangular or cylindrical in shape. The history of onigiri dates back to the 11th century, originally consisting of salted rice without fillings. Over time, they evolved to include various fillings and are often wrapped in nori. Other notable rice ball dishes include Chinese zongzi, which are made from glutinous rice and filled with sweet or savory ingredients, and Indian pindas, traditionally prepared for Hindu funeral rites. Italian cuisine also features rice balls, such as arancini and suppli, which are stuffed and deep-fried. Additionally, Ghanaian omo tuo rice balls are made from broken rice and served with soup, showcasing the global diversity of rice ball dishes.