Which day in May of 1951 did Al-Anon begin? The first letter is dated “May 1951” and the entire month is traditionally recognized as Al-Anon’s anniversary WSO2017-11-09T16:35:17+00:00November 9, 2017| Share This Post, Choose Your Platform! FacebookTwitterEmail Leave A Comment Cancel reply Comment Save my name, email, and website in this browser for the next time I comment. This site uses Akismet to reduce spam. Learn how your comment data is processed.