A long time ago in a galaxy far, far away there was a woman who would go on to become the first female Prime Minister of the United Kingdom. On this day, 36 years ago, her ruling party took out an ad in the London Evening News with a simple message of congratulations.
So, what the heck does any of this have to do with a day typically associated with lightsaber fights, kissing droids and arguably one of the most influential franchise in movie history? Well, just watch the video above to find out the origins of Star Wars Day.
And May the Fourth be with you... because it's the One Thing You Should Know Today.
More from HuffPost Canada's One Thing You Should Know Today series.
Also on HuffPost