Today, May 4th, is Star Wars Day, the unofficial day for the celebration of everything 'Star Wars.' The date, May the Fourth, sounds very similar to the popular 'Star Wars' quote "May the Force be with you," which is why the date was chosen by fans to celebrate one of the greatest pop culture phenomenon in the world.
May 4 is a day that everyone who loves the 'Star Wars' universe created by George Lucas celebrates with a passion. Say “May the 4th Be With You” out loud and you’ll hear the pun that Star Wars fans worldwide have turned into a rallying cry to proclaim their love of the saga - "May the Force Be With You."
Taken from StarWars.com:
While the idea of May the 4th did not start with Lucasfilm, the film company that created Star Wars has fully embraced the spirit of fandom that makes the day so special. StarWars.com as well as the official Star Wars social media channels (hashtag #StarWarsDay) help spread the word and showcase fan activity.