So I’m a huge nerd. That goes without saying. May the 4th be with you.
Here’s what Wikipedia has to say about Star Wars/Luke Skywalker Day:
This day is considered an unofficial holiday by Star Wars fans to celebrate Star Wars culture and remember the films.
May 4 is called Star Wars Day (also sometimes known as Luke Skywalker Day) because of the popularity of a common pun spoken on this day. Since the phrase “May the Force be with you” is a famous quote often spoken in the Star Wars films, fans commonly say “May the fourth be with you” on this day.
Despite efforts to start a Jediism Church with May 4 as its Star Wars Day, and despite the Catholic origin of the phrase, as of 4 May 2010there is no religion-supporting organization that promotes May 4 as Star Wars Day apart from the Church of Jediism.
In 2005 German news TV channel N24 interviewed George Lucas and asked him to say his famous sentence, “May the Force be with you.” The translator simultaneously translated to German: “Am 4. Mai sind wir bei Ihnen”. (We shall be with you on May 4). This was captured by comedy show TV Total and aired on May 18, 2005. However, the “May the 4th be with you” joke was already a known yearly joke to many before 2005.