National Beer Day is a celebration of the Cullen–Harrison Act being signed into law by President Franklin D. Roosevelt on March 22, 1933. That law went into effect on April 7 of that year, allowing people to buy, sell and drink beer again as long as it was < 3.2% alcohol-by-weight (4.05% alcohol-by-volume). People across the country responded by gathering outside breweries, some beginning the night before. On that first day, 1.5 million barrels of beer were consumed, inspiring the future holiday. Today, April 7 is recognized as National Beer Day and April 6 is known as New Beer's Eve.