February 18 is the 49th day of the year in the Gregorian calendar, leaving 316 days until the end of the year (317 in leap years). On this day, six national and international celebrations take place, recognizing science, food, history, and even aviation.

From appreciating batteries and thumbs to celebrating Pluto’s discovery and an unusual airborne dairy event, this day offers plenty of ways to learn something new.

National Days on February 18th
February 18 National Days

Let’s take a look at the national and international days observed on February 18!


National and International Days on February 18

Cow Milked While Flying in an Airplane Day: This quirky holiday commemorates an unusual event from February 18, 1930, when a cow named Elm Farm Ollie became the first bovine to fly in an airplane and be milked mid-flight. The stunt was part of the International Air Exposition in St. Louis, Missouri, designed to study how flying affected milk production. During the 72-mile flight, dairy farmer Elsworth W. Bunce milked the cow, producing 24 quarts of milk, which were then parachuted down to spectators.

National Battery Day: Celebrated on the birthday of Alessandro Volta, the inventor of the first true battery, this day highlights the essential role batteries play in modern life. From powering flashlights and remote controls to running cars and medical devices, batteries keep the world moving. Whether it’s disposable, rechargeable, or solar-powered, National Battery Day encourages appreciation for this crucial invention.

National Crab Stuffed Flounder Day: This food holiday recognizes a delicious seafood dish that combines flounder with a flavorful crab filling. The stuffing, made from crab meat, breadcrumbs, butter, and spices, is either rolled into flounder fillets or stuffed into a whole fish before baking. This dish is enjoyed in coastal regions and is a favorite at seafood restaurants.

National Drink Wine Day: A celebration of one of the world’s oldest and most beloved beverages, this day highlights the enjoyment and potential health benefits of wine. Moderate consumption of wine has been linked to heart health, reduced cholesterol, and relaxation. Whether paired with a meal or enjoyed alone, National Drink Wine Day encourages people to learn more about wine’s history and appreciation.

🍷 Did you know there are over 70 national and international wine days celebrated throughout the year? Explore them all and raise a glass to your favorite vintages! 🥂✨

Pluto Day: This day marks the anniversary of Pluto’s discovery on February 18, 1930, by astronomer Clyde Tombaugh at the Lowell Observatory. For 76 years, Pluto was considered the ninth planet in the solar system until the International Astronomical Union reclassified it as a dwarf planet in 2006. Named after the Roman god of the underworld, Pluto remains a favorite among astronomy enthusiasts and a symbol of scientific discovery.


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Thumb Appreciation Day: This lighthearted holiday celebrates the importance of the thumb, a unique and versatile digit that allows humans to grip, pinch, and manipulate objects. Opposable thumbs set humans apart from most animals, though some primates also have them. To honor the day, some people try to go without using their thumbs to better appreciate their value, while others find ways to use them more often.


These six national and international days on February 18 celebrate history, science, food, and even thumbs. Whether learning about Pluto, raising a glass of wine, or reflecting on a cow’s airborne adventure, there’s something for everyone to appreciate today.


National Days in February

February 1 | February 2 | February 3February 4 February 5 February 6 | February 7February 8February 9February 10February 11February 12February 13 | February 14 | February 15 | February 16 | February 17 | February 18 | February 19 | February 20 | February 21 | February 22 | February 23 | February 24 | February 25 | February 26 | February 27 | February 28


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➡️  Have you already seen DigitalHyyge’s National Days Calendars 2025?

➡️  Complete list of February National Days

➡️  Complete list of March National Days

➡️  Curious to see more national and international celebrations? We have dozens of national days lists curated for you!

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Last Update: February 26, 2025