April 21, 2026, is the 111th day of the year, with 254 days remaining, and it falls on a Tuesday — the third Tuesday in April — in the seventeenth week of the year.
With 20 national and international days on the calendar, April 21 is an unusually eclectic Tuesday highlighting a cup of British tea, a curlew on the wing, a monster in a Scottish loch, a UN call for creative thinking, library workers, bulldogs, chickpeas, and one entirely unofficial reminder that drug tests exist.
National Days on April 21
All national & international days celebrated today
20 celebrations on this dayNational Tea Day
Britain’s most beloved daily ritual gets its own day — a celebration of the 165 million cups of tea drunk in the UK every single day. From a builder’s brew to a fine Darjeeling, tea is far more than a drink: it’s a social institution, a comfort, and a cultural identity.
World Creativity and Innovation Day
Adopted by the UN in 2018 and observed each April 21, this day encourages the use of creative thinking and innovation to solve the world’s most pressing challenges — from climate change to inequality — and recognises creativity as a core driver of sustainable development.
World Curlew Day
The curlew — with its haunting call and distinctive curved bill — is one of the UK’s most urgent conservation priorities. Founded by Mary Colwell in 2017 after her 500-mile walk across Britain to raise awareness, this day fights for a bird whose numbers have fallen dramatically.
International Loch Ness Monster Day
Marking the anniversary of the famous 1934 “Surgeon’s Photograph” — the iconic image that sparked a global obsession with Nessie — this day celebrates Scotland’s most legendary lake creature, the enduring power of mystery, and the joy of believing in something wonderful.
Here’s every observance celebrated on April 21, 2026.
National & International Days on April 21
Whether you’re sipping tea, looking up a big word, thanking a librarian, keeping off the grass, pondering the existence of Nessie, or eating chocolate-covered cashews with a clean conscience, here’s the story behind each of these April 21 celebrations.
Advisor Appreciation Day
Advisor Appreciation Day honors the educational advisors who guide students through academic decisions, career planning, and life choices. From helping with college applications to offering course selection advice, these advisors play a vital role in student success. April 21 recognizes their dedication and the impact they have on shaping futures.
Big Word Day
Big Word Day celebrates the use of long, impressive vocabulary. It encourages people to swap out short words for more substantial ones and play with language in fun and intelligent ways. It’s not just about sounding smart—it’s also a celebration of the richness of language and expression.
International Hemp Day
International Hemp Day: Hemp has been cultivated for millennia for uses ranging from textiles and rope to biodegradable plastics and nutritious food. International Hemp Day brings attention to the plant’s versatility and encourages awareness of its environmental benefits. The day also distinguishes hemp from its psychoactive cousin, marijuana, and promotes sustainable practices using hemp.
➡️ A similar day, National Hemp Day, is celebrated on February 4.
International Loch Ness Monster Day
International Loch Ness Monster Day marks the anniversary of the famous “Surgeon’s Photograph” of Nessie, taken in 1934. While many of the monster sightings remain unproven, the fascination endures. The day celebrates Scotland’s most legendary lake creature and the folklore that continues to surround it.
Keep Off the Grass Day
Keep Off the Grass Day reminds everyone to protect and preserve their lawns by staying off them, especially during critical growing seasons. Started in 2013 by writer Jace Shoemaker-Galloway, the day emphasizes that excessive foot traffic damages grass, weakens its root systems, and makes it harder for healthy growth. The goal is to keep green spaces beautiful, environmentally beneficial, and thriving for everyone to enjoy.
National Bulldogs Are Beautiful Day
National Bulldogs Are Beautiful Day was founded in 2007 by author Jackie Valent. It challenges narrow definitions of beauty by spotlighting the lovable charm of bulldogs. Inspired by her book Stinky the Bulldog, Valent created the day to promote acceptance and raise awareness about bulldog care and adoption.
🐾 For more dogs, cats, and pets national days, visit the dedicated pages or use the search feature on our website to find exactly what you’re looking for!
National Chickpea Day
National Chickpea Day: Chickpeas have been cultivated for more than 9,000 years and are used in countless cuisines across the globe. From hummus and falafel to curries and salads, this humble legume gets its moment of appreciation on April 21. It’s a celebration of flavor, nutrition, and history.
National Chocolate-Covered Cashews Day
National Chocolate-Covered Cashews Day brings attention to a perfect pairing—creamy chocolate and crunchy cashews. Originally native to Brazil, the cashew tree now grows in many tropical areas. The blend of sweet and salty makes this treat a fan favorite.
🌰 A related day, National Cashew Day, is celebrated on November 23. Other nut-related days are National Almond Day and Grab Some Nuts Day.
National Kindergarten Day
National Kindergarten Day honors the birth of Friedrich Froebel (April 21, 1782) and celebrates the invention of kindergarten. Froebel opened the first kindergarten in Germany in 1837, emphasizing learning through play. The U.S. adopted the model later, with the first kindergarten opening in Wisconsin in 1856.
National Library Workers Day
National Library Workers Day* (Tuesday of National Library Week) was founded by the American Library Association. It recognizes the contributions of librarians and library support staff. It’s a time to appreciate their work in connecting communities with knowledge, preserving history, and fostering literacy.
National Pet CBD Day
National Pet CBD Day highlights the potential benefits of cannabidiol (CBD) for pets, particularly dogs. While still being researched, CBD is used to support pets with conditions like anxiety, pain, and seizures. The day aims to promote safe and responsible usage.
National Rendering Day
National Rendering Day was started by the North American Renderers Association to promote the practice of rendering—transforming inedible animal parts and used cooking oil into new materials. Celebrated near Earth Day, it highlights the environmental benefits of reducing waste and reusing resources.
National Surprise Drug Test Day
National Surprise Drug Test Day was created as a humorous (and unofficial) follow-up to April 20, National Marijuana Day. It gained traction through social media. The idea is simple: after a day commonly associated with cannabis use, April 21 reminds people—especially employees—that surprise drug tests are a possibility. While no official organization claims credit for the day, it’s widely recognized online.
National Tea Day
National Tea Day 🇬🇧 was founded in 2016 in the United Kingdom to coincide with Queen Elizabeth II’s birthday. It celebrates the cultural and social importance of tea. The day has since become a vibrant celebration across the UK, complete with events, tastings, and themed promotions. While there are other tea days globally, April 21 is the one most associated with British tea traditions.
National Yellow Bat Day
National Yellow Bat Day commemorates the activation of the 265th Army Security Agency Company (Airborne) on April 21, 1967. The unit served with the 101st Airborne Division and used a yellow bat as its symbol—representing secrecy, night operations, and intelligence work. The insignia featured a bat with outstretched wings over a rising moon and the motto “Through the Night.” In 2016, Doug Bonnot, President of the Sentinel Chapter of the 101st Airborne Association, helped establish the day to honor the history and service of this elite unit.
Thank You for Libraries Day
Thank You for Libraries Day honors libraries and the important role they play in education, literacy, and community life. With more than 110,000 libraries across the U.S., these institutions provide resources, access to information, and safe public spaces for learning and discovery.
Tuna Rights Day
Tuna Rights Day raises awareness about sustainable tuna fishing and the importance of protecting marine ecosystems and calls attention to the overfishing of key tuna species. From skipjack to bluefin, many types of tuna are now endangered or heavily exploited. This day promotes responsible consumption and better fisheries management.
World Creativity and Innovation Day
World Creativity and Innovation Day was proposed by Marci Segal in 2001 and adopted by the United Nations in 2018. It encourages people worldwide to use creativity to solve problems and improve their communities. It’s also tied to the UN’s Sustainable Development Goals and recognizes innovation across all fields—from science to the arts.
World Curlew Day
World Curlew Day was founded in 2017 by Mary Colwell raises awareness about curlews, a group of birds threatened by habitat loss and climate change. April 21 was chosen because it marked the start of Colwell’s 500-mile walk across the UK to draw attention to their plight. Today, the day is promoted by Curlew Action and includes outreach, education, and conservation programs.
