August 21 is the 233rd day of the year (234th in leap years), with 132 days remaining until the end of the year.

National Days on August 21st
August 21 National Days

This date balances indulgence and awareness—spotlighting spumoniburgers (UK-based), and the Brazilian blowout alongside observances devoted to senior citizensterrorism victimsinternet self-care, and fentanyl overdose prevention. It also includes niche celebrations like Hazy IPA Day for craft beer enthusiasts.

Here’s a look at the 8 national and international days celebrated on August 21.


National and International Days on August 21

International Day of Remembrance and Tribute to the Victims of Terrorism was established in 2017 by the United Nations General Assembly to honor the lives impacted by acts of terrorism. Many victims struggle with long-term physical, emotional, and financial hardships, and the day seeks to ensure their voices are heard and their rights recognized. In 2017, nearly three-quarters of all terrorism-related deaths occurred in just five countries—Afghanistan, Iraq, Nigeria, Somalia, and Syria—underscoring the global need for solidarity and support.

Internet Self-Care Day was created in 2017 by Aloe Bud, a wellness app designed to promote gentle daily habits. Rather than advocating for complete disconnection, the observance encourages mindful internet use—pausing to check in with oneself, avoiding burnout, and seeking online resources that support well-being. The day reflects a broader movement toward healthier digital habits in a constantly connected world.

National Brazilian Blowout Day began in 2014 to highlight the hair-smoothing treatment that originated in Brazil and became widely popular in the early 2000s. The Brazilian Blowout uses a liquid keratin formula to create sleek, frizz-free hair for weeks, even in high humidity. The day celebrates self-confidence and personal grooming while acknowledging the cultural origins of this global beauty trend.

National Burger Day(UK — Thursday before the August bank holiday) was founded in 2013 by Mr. Hyde, a British lifestyle email publication, to celebrate one of the world’s most popular meals. The event showcases standout burger venues across the UK and encourages people to explore new flavors, from classic beef patties to innovative plant-based creations.

National Fentanyl Prevention and Awareness Day was established in 2022 as a coordinated effort among grassroots organizations and families affected by fentanyl overdose. It raises awareness of the dangers of illicitly manufactured fentanyl, which is often mixed into other drugs without the user’s knowledge. The day also promotes overdose prevention measures and remembrance of those who have lost their lives to this synthetic opioid crisis.

National Hazy IPA Day(Third Thursday in August) was launched in 2023 by Sierra Nevada Brewing Co. to celebrate one of the fastest-growing styles in craft beer. Known for its cloudy appearance, hazy IPAs achieve their juicy, fruit-forward flavor through dry-hopping—adding hops after fermentation. This process reduces bitterness while enhancing aroma, creating a beer style that has quickly become a staple for breweries and beer enthusiasts alike.

National Senior Citizens Day was proclaimed in 1988 by U.S. President Ronald Reagan to recognize the achievements and contributions of older Americans. The observance encourages communities to show appreciation for senior citizens’ dedication to family, work, and civic life, and to address issues such as healthcare, accessibility, and social inclusion.

National Spumoni Day honors the layered Italian dessert originating in Naples in the late 19th century. Traditionally featuring pistachio, cherry, and chocolate or vanilla gelato, spumoni includes candied fruit and nuts, molded into colorful layers. Italian immigrants brought the recipe to the United States in the early 1900s, with Chicago’s Lezza family among those preserving authentic techniques.


💡

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

➡️  Complete list of August National Days

➡️  Complete list of September National Days

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

Categorized in:

Days,

Last Update: August 13, 2025