National Brown-Bag-It Day and National Wine Day in USA
National Brown-Bag-It Day and National Wine Day in USA is held on May 25. This event in the third decade of the month May is annual. 
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In the United States, an informal meeting at work, over lunch, where everyone brings a packed lunch, is a brown-bag lunch or colloquially a “brown bag”. Paper bags are a vital part of a sustainable paper circle.
National Brown-Bag-It-Day is being celebrated on May 25. You might find it odd that there is actually a National holiday designated to brown bag lunches.
Similar holidays and events, festivals and interesting facts
International Chardonnay Day on May 23 (Celebrated on the Thursday before U.S. Memorial Day each year thanks to the creator Rick Bakas);
International Drink Chenin Blanc Day on June 15 (Happens annually on the 3rd Saturday of June);
Lambrusco Day on June 20 (Lambrusco is a sparkling red wine made from the Lambrusco grape);
International Rosé Day on June 28 (Celebrated on the 4th Friday of June);
International Albariño Days on August 1
National Mead Day and Mustard Day in USA on August 3 (First Saturday of August);
Champagne Day on August 4 (âirthday of champagne in 1693);
National White Wine Day in US on August 4