April 28 is the 118th day of the year, leaving 247 days remaining until the end of 2025. On this day, 12 national and international days are observed, spanning topics from workplace safety and environmental awareness to humor, storytelling, and desserts.

National Days on April 28th
April 28th National Days

National and International Days on April 28

Biological Clock Day: This observance raises awareness about the body’s internal clock, also known as the circadian rhythm, which regulates sleep, mood, and overall health. It emphasizes the importance of syncing daily routines with natural biological cycles, especially as modern technology like artificial lighting and screens can disrupt this balance. The day encourages reflection on how to improve sleep hygiene and support overall well-being by honoring the body’s natural rhythms.

Clean Comedy Day: Originating in 1995 at the Comedy Barn Theater in Tennessee, Clean Comedy Day was officially recognized by the Tennessee Legislature in 2015. It celebrates humor that avoids offensive or explicit material, promoting jokes and storytelling suitable for all ages. This day honors a long tradition of witty, family-friendly entertainment and encourages comedians to find creative ways to make people laugh without crossing boundaries.

Global Pay It Forward Day: Founded in 2007 by Australian author and speaker Blake Beattie, this global initiative encourages individuals to perform random acts of kindness in response to the good they’ve received. Inspired by the book and film Pay It Forward, the movement now spans 85 countries. The day serves as a reminder that even small, thoughtful actions can create a ripple effect of goodwill and positive change.

Kiss Your Mate Day: Kiss Your Mate Day is a lighthearted celebration that promotes affection and emotional connection. Gaining popularity in recent years, particularly through social media, the day encourages couples to pause from their routines and strengthen their relationships. It’s also a timely reminder of the emotional and physiological benefits of expressing love and affection.

National Blueberry Pie Day: This day celebrates one of America’s favorite fruit pies just as blueberry season begins. Blueberries were first domesticated in the early 1900s thanks to the work of Elizabeth Coleman White and Dr. Frederick V. Coville. The first known blueberry pie recipe appeared in 1872. Today, the pie is especially popular in Maine, where it’s the official state dessert.

National BraveHearts Day: Founded in 2008 by Jeremy and Amy Jacobs in honor of their daughter Ava’s successful battle with a brain tumor, this day supports families affected by pediatric cancer. It draws attention to the emotional and logistical challenges these families face and promotes the use of tools like the Spotlight Hope app, which connects users to local resources and a supportive community. The day acknowledges the strength and resilience of families navigating childhood cancer.

National Cubicle Day: Created in recognition of the office cubicle, first introduced by designer Robert Propst in 1967, this day acknowledges both the practicality and the criticisms of this common workspace. Cubicles were developed to offer privacy and modularity in open office environments, but have since sparked debate about workplace satisfaction and productivity. National Cubicle Day offers a moment to reflect on the evolving nature of office design.

National Great Poetry Reading Day: Celebrated toward the end of National Poetry Month, this day promotes poetry and honors poets who have shaped the literary landscape. Poetry’s roots trace back to oral traditions and folk songs, long before the development of written language. National Great Poetry Reading Day encourages people to read, share, and engage with poetry that inspires reflection, creativity, and emotional expression.

National Superhero Day: Founded by Marvel Comics in 1995, this day honors both fictional and real-life heroes. While superheroes like Wonder Woman, Spider-Man, and Captain America inspire through their stories, everyday heroes—such as first responders and community helpers—play vital roles in society. The day encourages people to recognize and appreciate those who make a positive difference, both on the page and in real life.

Save The Frogs Day: Founded in 2008 by Dr. Kerry Kriger, this day is dedicated to amphibian conservation and environmental education. With many frog species facing extinction due to habitat loss, pollution, and disease, Save The Frogs Day raises awareness about the ecological importance of amphibians and promotes efforts to protect them. It’s the largest day of amphibian-focused action and outreach worldwide.

Workers’ Memorial Day: This international day of remembrance honors workers who have died, been injured, or fallen ill due to workplace conditions. First officially observed in the U.S. in 1989, it was inspired by the Occupational Safety and Health Act signed in 1970. Labor unions and organizations around the world use this day to advocate for improved workplace safety and to commemorate lives lost on the job.

World Day for Safety and Health at Work: Established by the International Labour Organization (ILO) in 2003, this global observance promotes the prevention of workplace accidents and diseases. It forms part of the ILO’s Global Strategy on Occupational Safety and Health. The day highlights the importance of fostering a culture of safety in the workplace and aligns with broader labor rights initiatives. April 28 is also recognized by trade unions as the International Commemoration Day for Dead and Injured Workers.


National Days in April

April 1 | April 2 | April 3 | April 4 | April 5 | April 6 | April 7 | April 8 | April 9 | April 10 | April 11 | April 12 | April 13 | April 14 | April 15 | April 16 | April 17 | April 18 | April 19 | April 20 | April 21 | April 22 | April 23 | April 24 | April 25 | April 26 | April 27 | April 28 | April 29 | April 30


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

➡️ Complete list of April National Days

➡️  Complete list of May 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: May 1, 2025