National Sangria Day in USA
National Sangria Day in USA is held on December 20. This event in the second decade of the month December is annual. 
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Honoring the drink's red hue, the term Sangria is believed to have derived from “sangre,” the Spanish word for blood. Most food historians agree that Spaniards introduced some version of sangria to the Americas in the early 1800s. Sangria rose to popularity in the United States during the 1964 World's Fair in New York. Spain's sponsored pavilion featured the drink and the rest is history.
The history of sangria is actually pretty straightforward. Over 2,000 years ago, the Romans made their way across the Iberian Peninsula and planted vineyards along the way. As water at that time was unsafe for drinking, it was common to fortify it with alcohol to kill off any bacteria. That's how this drink came to be.
Similar holidays and events, festivals and interesting facts
Cabernet Franc Day on December 4 (It's a way to prove that this variety is “More Than a Blending Grape!”);
National Champagne Day in USA on December 31
International Furmint Day on February 1 (Official hashtag:#FurmintDay);
National “Drink Wine” Day in USA on February 18
Global Drink Wine Day on February 18 (So why should this only be a day that is celebrated in the USA?);
Open “That Bottle” Night - Open That Bottle Night on February 22 (A comic holiday is celebrated on the last Saturday of February);
National Cold Cuts Day, Mulled Wine Day and National Moscow Mule Day in USA on March 3