International Day for the Preservation of the Ozone Layer is observed each year on September 16 to celebrate one of our planet’s greatest environmental victories - and to reinforce the...
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...
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...
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,...
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...
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,...
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...
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...
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...
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...
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,...
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...
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...
Rheumatoid Arthritis Awareness Week is an annual campaign dedicated to raising awareness about rheumatoid arthritis (RA), a chronic autoimmune disease that causes inflammation, pain, and swelling in the joints. This...
World Mitochondrial Disease Week is an annual global awareness event aimed at educating the public about mitochondrial diseases, a group of disorders caused by dysfunctional mitochondria. These rare, often devastating...
What is National Retinoid Week? Celebrated annually by skinbetter on the third week of September, National Retinoid Week focuses on educating on the demonstrated benefits of retinoids and showcasing innovations in formulations that aim...
Constitution Day, also known as Citizenship Day, is an annual observance in the United States that commemorates the signing of the U.S. Constitution on September 17, 1787. This day is...
National Pet Bird Day takes place every year on 17 September, celebrating companion birds and the joy they bring to millions of households. Created in 2019 by the Bird Enjoyment...
National Professional House Cleaners Day takes place every year on 17 September. The observance recognises the skill, effort, and professionalism of the people who clean homes for a living, and...
Constitution Day, also known as Constitution and Citizenship Day, is observed in the United States on 17 September each year, marking the anniversary of the signing of the US Constitution...
World Manta Day takes place every year on 17 September, raising awareness of manta and devil rays and the mounting threats they face in the world's oceans. Established by the...