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For you, every day may be National Beer Day, but it's actually only one day a year, April 7.

Let's drink to beer. (Thinkstock)

National Beer Day is upon us once more, and with it, an excellent reason to drink beer.

The holiday marks the anniversary of the signing of the Cullen-Harrison Act of 1933, which legalized the sale of beer in the United States with an alcohol content of 3.2% or lower. Selling beer had been illegal ever since the start of Prohibition in 1920.

The bill was signed into law by President Franklin D. Roosevelt, who knew how to have a good time, if this photoshop job of him enjoying a brew is any indication:

The kind of president you'd want to get a beer with. (Getty)

The bill was signed on March 22 and went into effect on April 7. On that day, people gathered at their local breweries and pubs to buy their first legal beers in years. And that's why we continue to celebrate National Beer Day to this very beer day.