Hoarding Day is held on May 27. This event in the third decade of the month may is annual.
In the United States, “officially recognized” mental disorders are listed in the Diagnostic and Statistical Manual of Mental Disorders (DSM), which is published by the American Psychiatric Association. The DSM details all mental disorders and their diagnostic criteria; the fifth edition was published in spring 2013.
The history of hoarding stretches from before Dante to a Smith College psychology laboratory, and now the condition may be officially recognized as a legitimate mental disorder.
National Paper Airplane Day on May 26 (United States);
Statehood Day in Rhode Island and Wisconsin on May 29 (Rhode Island - 1790 and Wisconsin - 1848);