May 28, 2026, is the 148th day of the year, with 217 days remaining, and it falls on a Thursday — in the twenty-first week of the year.
With 12 national and international days on the calendar, May 28 is a day of real depth: Amnesty International was founded on this date in 1961 following Peter Benenson’s call to action for political prisoners; Menstrual Hygiene Day addresses a global equity issue affecting 500 million people; and World Hunger Day promotes sustainable solutions to one of humanity’s oldest and most persistent crises. The hamburger, the brisket, and the slugs returning from Capistrano provide welcome relief.
National Days on May 28
All national & international days celebrated today
12 celebrations on this dayInternational Hamburger Day / National Hamburger Day
Whether you call it a hamburger, a burger, or simply lunch, May 28 is the day dedicated to one of the world’s most popular foods. Named for Hamburg, Germany — where minced beef patties were a 19th-century staple — the American hamburger in a bun became a cultural icon at the 1904 St. Louis World’s Fair. Today over 50 billion are consumed annually in the US alone.
Menstrual Hygiene Day
Founded by WASH United in 2013 and observed each May 28 — the 28th day of the month, reflecting the average 28-day cycle — Menstrual Hygiene Day works to break taboos, raise awareness, and advocate for the 500 million people who lack adequate access to menstrual products and facilities. Period poverty remains a significant barrier to education and health equity worldwide.
Amnesty International Day
Observed on May 28 — the anniversary of Amnesty International’s founding in 1961 by British lawyer Peter Benenson, following his newspaper article “The Forgotten Prisoners” which called attention to two Portuguese students jailed for raising a toast to freedom. Today Amnesty International has over 10 million members in 150 countries and remains the world’s leading human rights organisation.
World Hunger Day
Founded by The Hunger Project, World Hunger Day on May 28 focuses not just on the symptom of hunger but on its root causes — poverty, inequality, lack of access to resources, and the systemic exclusion of women from economic participation. The day promotes sustainable solutions that address hunger at its source rather than through emergency relief alone.
Here’s every observance celebrated on May 28, 2026.
National & International Days on May 28
Whether you’re eating a hamburger, smoking a brisket, raising a passion fruit martini, honoring Amnesty International, reflecting on menstrual equity, watching for whooping cranes, pondering the philosophy of Thales, or welcoming the slugs back from their winter retreat, here’s the story behind each of these May 28 celebrations.
Amnesty International Day
Amnesty International Day honors the founding of Amnesty International on May 28, 1961. British lawyer Peter Benenson launched the organization after writing an article titled “The Forgotten Prisoners,” which highlighted the injustice of two Portuguese students jailed for raising a toast to liberty. Amnesty has since grown into a global movement for human rights, advocating on behalf of prisoners of conscience and those affected by war, persecution, and inequality.
International Day of Action for Women’s Health
International Day of Action for Women’s Health, also called International Women’s Health Day, that has been observed on May 28 since the late 1980s. It raises awareness of women’s sexual and reproductive health rights and the systemic barriers that affect them. The day empowers individuals and organizations to take action toward gender equality and access to healthcare. It’s part of a broader movement to recognize women’s rights as fundamental human rights.
Menstrual Hygiene Day
Menstrual Hygiene Day was launched in 2013 by the nonprofit WASH United to break the silence and stigma around menstruation. The date—5/28—was chosen symbolically: 5 days being the average length of a period and 28 days as the average cycle length. This global movement works to improve access to menstrual products, education, and policy reform in over 70 countries.
National Beef Burger Day
National Beef Burger Day was founded in 2020 by the National Cattlemen’s Beef Association as part of their “Beef. It’s What’s for Dinner” campaign. It celebrates the iconic beef burger as the star of summer grilling. It’s observed annually on May 28 and encourages Americans to enjoy their favorite version—whether simple or stacked high with toppings.
🍔 Related food holidays include National Cheeseburger Day on September 18 and National Hamburger Day, which is also on May 28. Also, there is a separate UK-edition of the National Burger Day 🇬🇧 observed annually on the Thursday before the August Bank Holiday.
National Brisket Day
National Brisket Day honors one of the most flavorful and tender cuts of beef. Brisket comes from the lower chest of cattle and contains connective tissue that requires slow cooking to break down. Its name comes from the Old Norse word “brjósk,” meaning cartilage. Brisket is central to many culinary traditions, from Jewish braised dishes to Texas barbecue.
National Hamburger Day
National Hamburger Day / International Hamburger Day highlights the hamburger’s place in American food culture and often coincides with the start of the grilling season and restaurant promotions. The date also overlaps with National Beef Burger Day and marks the close of National Burger Month.
National Multiple Births Awareness Day
National Multiple Births Awareness Day was founded in 2005 by Multiple Births Canada. This awareness day is celebrated on May 28 to honor the birth of the Dionne Quintuplets in 1934—the first known set of quintuplets to survive infancy. The day aims to raise awareness about the unique needs and experiences of multiple-birth families, from prenatal care to childhood development and beyond.
Passion Fruit Martini Day
Passion Fruit Martini Day was founded in 2021 by Funkin Cocktails to honor one of the UK’s most beloved drinks. The passion fruit martini, which originated in London in the early 2000s, is known for its tropical flavor and eye-catching presentation. The day invites cocktail lovers to toast to creativity in mixology and pairs well with related observances like World Cocktail Day (May 13) and World Martini Day (June 19).
Slugs Return From Capistrano Day
Slugs Return From Capistrano Day was created by Ruth and Thomas Roy to celebrate the mythical migration of slugs from Capistrano back to our gardens and patios. Observed every May 28, the day raises awareness about the role of slugs in the ecosystem, from decomposition to food chain support—even if they’re not always welcome in our flower beds.
Whooping Crane Day
Whooping Crane Day was launched in 1973 by the International Crane Foundation in Baraboo, Wisconsin to highlight the plight of one of North America’s most endangered birds. At the time of its founding, only about 50 whooping cranes remained in the wild. Thanks to conservation efforts, including habitat restoration and captive breeding, the population has slowly increased. The day emphasizes the importance of continued environmental protection.
World Hunger Day
World Hunger Day was started in 2011 by The Hunger Project to call attention to the global issue of chronic hunger, which affects millions worldwide. Observed annually on May 28, the day encourages sustainable solutions and community-led development to end hunger for good.
🍽️ Related observances include World Food Day on October 16 and Global Day of Action on Climate Change, which often addresses food security.
