National Friendship Day was originally founded by Hallmark in 1919. It was intended to be a day for people to celebrate their friendship by sending each other cards. However, by 1940 the market had dried up, and eventually, it died out completely. Then, in 1998 Winnie the Pooh was named the world’s Ambassador of Friendship at the United Nations. In April 2011, the United Nations officially recognized 30th July as International Friendship Day; although most countries celebrate on the first Sunday of August! (Click to learn more about National Friendship Day)