April 7 was National Beer Day in the United States. National Beer Day is not a real holiday. But a lot of Americans are celebrating on social media. One Twitter user, RadarX, wrote, “I hear it’s #NationalBeerDay and I feel fortunate to live where they make so much of it.” Other Twitter users joined in by posting photographs of glasses of cold beer. The magazine Men’s Journal published a list of what it called the “100 Best Beers in America.” The beers are listed alphabetically by the state where they are produced. Some of the beers have unusual names, such as Sloth, Fuzzy Baby Ducks and Lizard King. April 7 is an important day in beer history. On that day in 1933, Americans could legally buy beer again after 13 years. Sales of beer had been barred under the U.S. Constitution. The 18th Amendment to the constitution took effect in 1920.