Scrabble Day is held on April 13. April 13th is the birthday of Alfred Butts, the inventor of the Scrabble game. This event in the second decade of the month april is annual.
In 1933, New York City architect Alfred Mosher Butts created an early version of the game we know as Scrabble. To determine how many tiles there should be and how many points each letter should be worth, he calculated letter frequency on the front page of The New York Times.
Big Wind Day on April 12 (On April 12, 1934, the staff of the Mount Washington Observatory recorded the highest surface wind ever measured, anywhere on earth. This big wind was officially recorded at 231 miles per hour.);
Walk On Your Wild Side Day on April 12 (Thomas and Ruth Roy are credited with being the creators of this celebration);
Be Kind to Lawyers Day on April 13 (Second Tuesday of April);
International Moment of Laughter Day on April 14 (is focuses on laughter as a way to de-stress);
That Sucks Day on April 14 (Throughout the history of the holiday and the organization that sponsored it, That Sucks LLC, they seek to exemplify all that is terrible and wrong in the world)