The International Day for the Remembrance of the Slave Trade and its Abolition is an international day celebrated 23 August of each year, the day designated by UNESCO to memorialize the transatlantic slave trade.

The International Day of the World's Indigenous Peoples is observed on 9 August each year to raise awareness and protect the rights of the world's indigenous population

On 19 August, we mark World Humanitarian Day — a time to honor those who step into crises to help others, and to stand with the millions of people whose lives hang in the balance.

The International Day for the Remembrance of the Slave Trade and its Abolition is an international day celebrated 23 August of each year, the day designated by UNESCO to memorialize the transatlantic slave trade.

Women’s Equality Day is observed annually in the United States on August 26 to commemorate the 1920 adoption of the Nineteenth Amendment, which granted American women the right to vote.

World Suicide Prevention Day (WSPD) is organized by the International Association for Suicide Prevention (IASP). WHO has been co-sponsor of the day. The purpose of this day is to raise awareness around the globe that suicide can be prevented.

National Inclusion Week (NIW), held from the 14th to the 20th of September 2026, is an annual event across the UK that celebrates everyday inclusion in all its forms

HeForShe, referred to as He for She, is a solidarity movement for the advancement of gender equality initiated by the United Nations.

The International Day of Peace, also officially known as World Peace Day, is a United Nations-sanctioned holiday observed annually on 21 September

The International Day of Sign Languages is a unique opportunity to support and protect the linguistic identity and cultural diversity of all deaf people and other sign language users.

The European Day of Languages is celebrated each year on 26 September. It was established in 2001 at the joint initiative of the Council of Europe and the European Commission.

Observed annually on October 1st, the International Day of Older Persons is a global UN initiative that raises awareness about the opportunities and challenges of aging.

In the UK, Black History Month happens every October. It gives everyone the opportunity to share, celebrate and understand the impact of black heritage and culture.

The overall objective of World Mental Health Day is to raise awareness of mental health issues around the world and to mobilize efforts in support of mental health.

Observed annually on October 11, National Coming Out Day (NCOD) celebrates LGBTQIA+ individuals who publicly share their sexual orientation or gender identity.

World Menopause Day is held annually on October 18th to raise awareness about menopause and the support options available to improve health and wellbeing.

United Nations Day is celebrated annually on October 24 to mark the anniversary of the UN Charter's entry into force in 1945.

The Transgender Day of Remembrance (TDOR) honours the memory of transgender individuals who have lost their lives to anti-transgender violence.

The United Nations General Assembly has designated November 25 as the International Day for the Elimination of Violence Against Women

World Braille Day, celebrated since 2019, is observed to raise awareness of the importance of Braille as a means of communication in the full realization of the human rights for blind and partially sighted people.

The International Day of Education 2026 will recognize youth and their role as agents of change in achieving inclusive and equitable quality education and building peaceful, just and inclusive societies.

The International Holocaust Remembrance Day, or the International Day in Memory of the Victims of the Holocaust, is an international memorial day on 27 January that commemorates the victims of the Holocaust

International Day of Zero Tolerance for Female Genital Mutilation is a United Nations-sponsored annual awareness day that takes place on February 6 as part of the UN's efforts to eradicate female genital mutilation. It was first introduced in 2003

The International Day of Women and Girls in Science, observed on February 11th, aims to promote gender equality in science and technology fields

World Day of Social Justice (Social Justice Equality Day) is an international day recognizing the need to promote social justice, which includes efforts to tackle issues such as poverty, exclusion, gender inequality, unemployment, human rights, and social protections.

The International Day for the Elimination of Racial Discrimination is observed annually on 21 March since declared by the United Nations in 1966. In South Africa, the country in which the event took place that gave rise to the observance, the Sharpeville Massacre, the day is commemorated as Human Rights Day, and is a public holiday.

The vision of World Bipolar Day (WBD) is to bring world awareness to bipolar disorders and to eliminate social stigma and discrimination.  

Day of Silence is an annual day of action organized by GLSEN (Gay, Lesbian & Straight Education Network) to spread awareness about the effects of the bullying and harassment of lesbian, gay, bisexual, transgender, queer, and questioning (LGBTQ) students. In the United States, students take a day-long vow of silence to symbolically represent the silencing of LGBTQ students.

Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally through earthday.org (formerly Earth Day Network) including 1 billion people in more than 193 countries.

The International Day for Biological Diversity (or World Biodiversity Day) is a United Nations–sanctioned international day for the promotion of biodiversity issues. It is currently held on May 22.

Pride Month, sometimes specified as LGBTQIA+ Pride Month, is a month-long observance dedicated to the celebration of LGBTQ pride, commemorating the contributions of lesbian, gay, bisexual, transgender and queer (LGBTQ) culture and community.

World Environment Day (WED) is celebrated annually on 5 June and encourages awareness and action for the protection of the environment.

Every year, 8 June marks World Oceans Day, celebrated since 1992 and officially designated by the United Nations in 2008.

Clean Air Day, the UK's largest air pollution campaign

World Refugee Day is an international observance held every year on June 20 to honor the courage and resilience of individuals forced to flee their homes due to conflict, violence, or persecution