May the Force be with you this May 4th. Today people around the world will celebrate Star Wars Day. The unofficial holiday honoring Jedi, droids and the Force doesn't get its roots from a galaxy far, far away. Instead, it dates back to 1979 in Britain when Margaret Thatcher was named Britain's first female prime minister. To celebrate her victory, her party took out an ad in the London Evening News saying "May the Fourth Be With You, Maggie. Congratulations." The catchy pun has since been the unofficial greeting for Star Wars fans on the holiday.