There are lots of cool holidays in April this year. April 25 is a national holiday celebrating liberation day in Italy. April holidays don’t always include Passover, Good Friday and Easter because they can fall anywhere from late March to late April. One of the most popular ways to celebrate Earth Day is to plant a tree, since Earth Day is roughly around the same time as Arbor Day. Leave a note with a message to call back a Mr. Harry Lyon, and include the number for the local zoo. April Fool’s Day is marked by the commission of good-humoured or otherwise funny jokes, hoaxes, and other practical jokes of varying sophistication on friends, family members, teachers, neighbors, work associates, etc.