National Google.com Day takes place on Tuesday, 15 September 2026. The day marks the anniversary of the registration of the google.com domain name on 15 September 1997, a small administrative step that helped launch one of the most influential companies of the internet age. It is a light-hearted occasion to reflect on how a Stanford...
Greenpeace Day takes place every year on 15 September, marking the anniversary of the voyage that gave rise to one of the world's best-known environmental organisations. On this date in 1971, a small crew of activists set sail from Vancouver, Canada, aboard a chartered fishing boat they renamed the Greenpeace. The day is observed as...
Nicaragua Independence Day is a national public holiday observed every year on 15 September. It marks the anniversary of the signing of the Act of Independence of Central America in 1821, when the provinces of the region broke away from Spanish colonial rule. In 2026 the holiday falls on Tuesday, 15 September, and is celebrated...
National Double Cheeseburger Day is celebrated every year on 15 September, and in 2026 it falls on Tuesday, 15 September. The day honours one of America's most indulgent fast-food creations: two beef patties, two slices of melting cheese and all the trimmings stacked into a single burger. It is a light-hearted excuse to fire up...
Guatemala Independence Day is a national holiday celebrated every year on 15 September, marking the day in 1821 when Central America declared its independence from Spanish rule. In 2026 it falls on Tuesday, 15 September. Across Guatemala the day is observed with parades, torch relays, marimba music and patriotic displays in the national colours of...
National Neonatal Nurses Day takes place every year on 15 September and honours the specialist nurses who care for newborn babies in their most fragile first days. In 2026 it falls on Tuesday, 15 September. The day recognises the skill, dedication, and compassion of neonatal nurses who work in intensive care units supporting premature and...
Make a Hat Day falls on Tuesday, 15 September 2026. It is a light-hearted celebration of creativity and self-expression that invites people of all ages to design and build their own hat from whatever materials they have to hand, then wear it with pride for the rest of the day. There is no fundraising goal...
National Online Learning Day is observed on 15 September each year in the United States, celebrating the transformative power of digital education and the millions of students, educators, and institutions who have embraced online learning as a flexible, accessible, and effective path to knowledge and qualification. The day recognises how far e-learning has come and...
Every year on September 15, people around the world observe World Lymphoma Awareness Day - a dedicated moment to highlight lymphoma, raise understanding of its symptoms, and strengthen support for those living with or recovering from this blood cancer. What is World Lymphoma Awareness Day? This global initiative, led by the Lymphoma Coalition and supported...
Mexican Independence Day is observed on 16 September each year, commemorating the start of Mexico's war of independence from Spain in 1810. The celebrations begin on the evening of 15 September with the re-enactment of El Grito de Dolores - the historic call to arms issued by Father Miguel Hidalgo y Costilla - and continue...
National GED Day takes place on Wednesday, 16 September 2026. The day, organised by the GED Testing Service, recognises the achievements of people who have earned their high school equivalency credential and celebrates the learners, educators, and supporters who make that achievement possible. What is National GED Day? National GED Day is an annual observance...
Hari Malaysia, known in English as Malaysia Day, is the national day that commemorates the formation of the Federation of Malaysia on 16 September 1963. Observed annually on 16 September, it has been a nationwide public holiday since 2010 and is recognised by the Malaysian federal government. In 2026 it falls on Wednesday, 16 September....
Mayflower Day falls on 16 September each year and commemorates the date in 1620 when the Mayflower set sail from Plymouth, England, carrying 102 passengers towards the New World. The day marks one of the most consequential voyages in early American history, remembering the people who would later be known as the Pilgrims and the...
National Choose Your Chocolate Day takes place every year on 16 September, inviting chocolate lovers to seek out and savour their favourite variety, whether that is a creamy milk bar, a bittersweet dark square, a smooth white truffle or a nut-studded cluster. The day was created by the American chocolatier See's Candies in 2020 and...
National Tattoo Story Day takes place every year on 16 September and invites people to share the personal stories behind their tattoos. The day celebrates the idea that every piece of body art carries meaning, whether it marks a memory, a loss, a milestone or simply a love of the craft. It has been observed...
National Guacamole Day is celebrated every year on 16 September. In 2026 it falls on Wednesday, 16 September. The day honours the much-loved avocado dip with deep roots in Mexican cuisine, and it shares its date with Mexican Independence Day, making it a natural moment to enjoy traditional flavours. How to Celebrate National Guacamole Day...
National School Backpack Awareness Day is held on the third Wednesday of September each year, falling on Wednesday, 16 September 2026. Organised by the American Occupational Therapy Association (AOTA), the day educates students, parents, teachers and healthcare professionals about the health risks of carrying overloaded or poorly fitted backpacks, and promotes simple habits that protect...
National Uniform Day is observed in the United States on the third Wednesday of September, falling on Wednesday, 16 September 2026. The day recognises the tens of millions of people who wear a uniform as part of their daily work, from nurses and paramedics to pilots, restaurant staff and construction crews. It was created to...
National Sit With a Stranger Day takes place on Wednesday, 16 September 2026. The day encourages people to set aside their usual routine, sit beside someone they do not know, and start a conversation. It was created to counter social isolation and remind people that small, everyday interactions with strangers can build connection, empathy, and...
National Coding Week is an annual event that aims to inspire people of all ages to learn digital skills, particularly coding. In a world increasingly driven by technology, coding is a valuable skill that can open doors to a wide range of opportunities. This week-long campaign encourages individuals, schools, businesses, and communities to participate in...
Orchid Male Cancer Awareness Week is an annual campaign dedicated to raising awareness about male-specific cancers, including prostate, testicular, and penile cancers. Organized by the charity Orchid, this week focuses on educating men and the wider public about the importance of early detection, the signs and symptoms of these cancers, and the need for regular...