August 13, 2026, is the 225th day of the year, with 140 days remaining, and it falls on a Thursday — in the thirty-third week of the year.
With just 3 national and international days on the calendar, August 13 is one of the quietest days of the whole year. International Lefthanders Day, established in 1976, gives the 10% of humanity who navigate a right-handed world their annual moment of recognition. National Filet Mignon Day calls for the most tender cut on the menu, and National Prosecco Day pours 600 million bottles of justification into a glass.
National Days on August 13
All national & international days celebrated today
3 celebrations on this dayInternational Lefthanders Day
Dean R. Campbell, founder of Lefthanders International, established International Lefthanders Day in 1976. Observed each August 13, the day celebrates the roughly 10% of the world’s population who favor their left hand. It also raises awareness of the daily challenges a mostly right-handed world creates for them. Scissors, spiral notebooks, desks, guitar strings, and computer mice are all designed with right-handed users in mind, so left-handers constantly adapt to tools built for the majority. Today is the one day that minority takes center stage.
National Filet Mignon Day
National Filet Mignon Day, celebrated on August 13, honors the most tender cut of beef. It’s a small, thick medallion from the narrow end of the tenderloin, the least-worked muscle in the animal, and its name comes from the French for dainty fillet. Filet mignon is prized for its buttery texture rather than intense beefy flavor. It’s best cooked quickly over high heat to a perfect medium-rare, then finished with butter and left to rest.
National Prosecco Day
National Prosecco Day on August 13 celebrates Italy’s beloved sparkling wine. It’s produced from Glera grapes in the Veneto and Friuli Venezia Giulia regions of northeastern Italy and is protected by both DOC and DOCG designations, which strictly define its geographic origin and production methods. Prosecco is lighter, fruitier, and lower in alcohol than Champagne, and it has become the world’s best-selling sparkling wine, with over 600 million bottles produced annually.
Here’s every observance celebrated on August 13, 2026.
National & International Days on August 13
Whether you’re celebrating your left hand, ordering a filet mignon, or opening a bottle of Prosecco, here’s the story behind each of these August 13 celebrations.
International Left Handers Day
International Left Handers Day has been celebrated annually on August 13 since 1976, thanks to Dean R. Campbell, founder of the Left-Handers Club. The day honors the roughly 7–10% of the population that is left-handed and aims to raise awareness of the everyday challenges they face in a predominantly right-handed world. It also calls attention to the need for better tools, designs, and educational support for left-handed individuals, while celebrating the uniqueness of their experience.
National Filet Mignon Day
National Filet Mignon Day is all about savoring one of the most tender cuts of beef. The name “filet mignon,” which means “dainty fillet” in French, became popular in the early 20th century, partly through the writings of American author O. Henry. This cut comes from the small end of the tenderloin, a muscle that sees little use, making it exceptionally tender. Filet mignon is a staple of fine dining and is often paired with sauces or wrapped in bacon to elevate its naturally mild flavor.
National Prosecco Day
National Prosecco Day was founded by Riondo Prosecco to toast the joys of late summer. Prosecco is a sparkling wine from northeastern Italy, made mostly with the Glera grape. Its light, fruity character—featuring notes of pear, apple, and citrus—comes from the Charmat method of fermentation, which uses stainless steel tanks. Unlike Champagne, Prosecco’s production style keeps it more affordable while maintaining its festive feel.
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National Days in August
