Honesty Day is held on April 30. United States. This event in the third decade of the month april is annual.
Green Up Day in Vermont on May 1 (observed on the first Saturday of May, is a statewide effort in the US state of Vermont to clean up roadside trash);
Children's Parade Carnival Day in U.S. Virgin Islands on May 1 (Carnival is for everyone, from small children to adults);