• Roald Dahl Story Day 2027

    International

    Roald Dahl Story Day is a joyful annual celebration of one of the world’s most beloved storytellers. Held on September 13 - Dahl’s birthday - it’s a day to share...

  • International Chocolate Day

    International

    International Chocolate Day takes place every year on 13 September, a date chosen to mark the birthday of chocolate pioneer Milton S. Hershey, who was born on 13 September 1857....

  • National Quiet Day 2027

    International

    In a world that never seems to pause, National Quiet Day offers a rare invitation: to embrace silence, slow down, and tune in to the sounds - or lack of...

  • Pension Awareness Day 2027

    International

    On September 15, 2027, Pension Awareness Day returns to spotlight a topic that affects us all: securing a financially stable retirement. Whether you’re just starting your career or nearing retirement,...

  • International Day of Democracy

    International

    International Day of Democracy is observed worldwide every year on September 15. It’s a day to reflect on what democracy really means, why it matters, and how we can all...

  • International Dot Day

    International

    International Dot Day is a global celebration of creativity, courage and connection based on Peter H. Reynolds’ beloved picture book “The Dot.” Observed annually around September 15, it invites people...

  • World Lymphoma Awareness Day

    International

    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...

  • Costa Rica – Independence Day

    International

    Costa Rica Independence Day is the national holiday marking the country's separation from Spanish colonial rule, celebrated every year on 15 September. It commemorates the signing of the Act of...

  • Nicaragua – Independence Day

    International

    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...

  • Guatemala – Independence Day

    International

    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...

  • National Online Learning Day

    United States , United States

    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...

  • El Salvador — Independence Day

    International

    El Salvador — Independence Day is on Wednesday 15 September 2027.El Salvador's national independence observance falls on 15 September.Country or nation: El Salvador.DatesYearDate2026Tuesday 15 September 20262027Wednesday 15 September 20272028Friday 15...

  • Honduras — Independence Day

    International

    Honduras — Independence Day is on Wednesday 15 September 2027.Commemorates independence in 1821.Country or nation: Honduras.DatesYearDate2026Tuesday 15 September 20262027Wednesday 15 September 20272028Friday 15 September 2028Official sourcesprotocol.dfat.gov.auum.fiExplore national days by country...

  • Mexican Independence Day

    International

    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...

  • Malaysia Day

    International

    Malaysia Day is on Thursday 16 September 2027.Commemorates the formation of Malaysia in 1963, bringing together Malaya, Sabah, Sarawak and Singapore; Singapore left the federation in 1965.Country or nation: Malaysia.DatesYearDate2026Wednesday...

  • Papua New Guinea — Independence Day

    International

    Papua New Guinea — Independence Day is on Thursday 16 September 2027.Commemorates independence on 16 September 1975, the day Papua New Guinea's constitution came into effect.Country or nation: Papua New...

  • World Patient Safety Day 2027

    International

    World Patient Safety Day is on 17 September 2027. Find official WHO information and practical ways to involve patients, carers and health teams.

  • National HIV/ AIDS and Ageing Awareness Day 2027

    United States , United States

    National HIV/ AIDS and Ageing Awareness Day 2027 is on Saturday 18 September 2027. National HIV/AIDS and Aging Awareness Day is an annual observance dedicated to addressing the challenges faced...