Browse all researched observances

International Day of Deafblindness

27 June · United Nations / international observance

A/RES/79/294

International Day of Democracy

15 September · United Nations / international observance

A/RES/62/7

International Day of Education

24 January · United Nations / UNESCO international observance

A/RES/73/25

International Day of Engagement in Science for Sustainable Development

27 November · UNESCO international day

Proclaimed by UNESCO General Conference in 2025

International Day of Epidemic Preparedness

27 December · United Nations international observance

A/RES/75/27

International Day of Families

15 May · United Nations / international observance

A/RES/47/237

International Day of Family Remittances

16 June · International observance led by IFAD

A/RES/72/281

International Day of Forests

21 March · United Nations / FAO international observance

A/RES/67/200

International Day of Friendship

30 July · United Nations international observance

A/RES/65/275

International Day of Happiness

20 March · United Nations international observance

A/RES/66/281

International Day of Hope

12 July · United Nations / international observance

A/RES/79/270

International Day of Human Fraternity

4 February · United Nations / international observance

A/RES/75/200

International Day of Human Space Flight

12 April · United Nations / international observance

A/RES/65/271

International Day of Innocent Children Victims of Aggression

4 June · United Nations international remembrance observance

A/RES/ES-7/8

International Day of Islamic Art

18 November · UNESCO international day

Proclaimed at UNESCO’s 40th General Conference (2019)

International Day of Light

16 May · UNESCO international observance

UNESCO 39 C/Resolution 16

International Day of Living Together in Peace

16 May · United Nations / international observance

A/RES/72/130

International Day of Mathematics

14 March · UNESCO international observance

International Day of Multilateralism and Diplomacy for Peace

24 April · United Nations / international observance

A/RES/73/127

International Day of Neutrality

12 December · United Nations / international observance

A/RES/71/275

International Day of Non-Violence

2 October · United Nations international observance

A/RES/61/271

International Day of Nowruz

21 March · United Nations-recognized cultural observance

A/RES/64/253

International Day of Older Persons

1 October · United Nations / international observance

A/RES/45/106

International Day of Parliamentarism

30 June · United Nations / international observance

A/RES/72/278

International Day of Peace

21 September · United Nations / international observance

A/RES/36/67

International Day of Peaceful Coexistence

28 January · United Nations / international observance

A/RES/79/269

International Day of Persons with Disabilities

3 December · United Nations / international observance

A/RES/47/3

International Day of Pink

Second Wednesday of April · International anti-bullying, anti-discrimination and inclusion campaign; current organizer material especially centers 2SLGBTQIA+ inclusion and school/community education

International Day of Pink first-party campaign material verifies the second-Wednesday-in-April cadence and current 2026/2027 editions; archived Government of Canada material independently d…

International Day of Plant Health

12 May · United Nations / FAO international observance

A/RES/76/256

International Day of Play

11 June · United Nations / international observance

A/RES/78/268

International Day of Police Cooperation

7 September · United Nations / international observance

A/RES/77/241

International Day of Potato

30 May · FAO / United Nations / international observance

A/RES/78/123

International Day of Radiology

8 November · Organizer-backed international observance

European Society of Radiology (ESR), American College of Radiology (ACR) and Radiological Society of North America (RSNA)

International Day of Recognition for Women Searchers of Missing Persons

19 December · United Nations / international observance

A/RES/80/L.108

International Day of Reflection and Commemoration of the 1995 Genocide in Srebrenica

11 July · United Nations / international observance

A/RES/78/282

International Day of Reflection on the 1994 Genocide against the Tutsi in Rwanda

7 April · United Nations / international observance

A/RES/58/234

International Day of Remembrance and Tribute to the Victims of Terrorism

21 August · United Nations / international observance

A/RES/72/165

International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade

25 March · United Nations international remembrance observance

A/RES/62/122

International Day of Rural Women

15 October · United Nations international observance

A/RES/62/136

International Day of Science, Technology and Innovation for the South

16 September · United Nations / international observance

A/RES/78/259

International Day of Sign Languages

23 September · United Nations / international observance

A/RES/72/161

International Day of Solidarity with Detained and Missing Staff Members

25 March · United Nations / international observance

A/RES/49/59

International Day of Solidarity with the Palestinian People

29 November · United Nations / international observance

A/RES/32/40B

International Day of Sport for Development and Peace

6 April · United Nations international observance

A/RES/67/296

International Day of the Arabian Leopard

10 February · United Nations / international observance

A/RES/77/295

International Day of the Celebration of the Solstice

21 June · United Nations / international observance

A/RES/73/300

International Day of the Girl Child

11 October · United Nations / international observance

A/RES/66/170

International Day of the Intangible Cultural Heritage

17 October · UNESCO international day

Proclaimed at UNESCO’s 42nd General Conference (2023)

International Day of the Markhor

24 May · United Nations / international observance

A/RES/78/278

International Day of the Mediterranean Diet

16 November · United Nations / international observance

A/RES/80/174

International Day of the Midwife

5 May · international professional and health-workforce observance

ICM and UNFPA material support annual 5 May recurrence and ICM establishment of the observance in 1992.

International Day of the Snow Leopard

23 October · United Nations / international observance

A/RES/79/143

International Day of the Tropics

29 June · United Nations / international observance

A/RES/70/267

International Day of the Victims of Enforced Disappearances

30 August · United Nations / international observance

A/RES/65/209

International Day of the World's Indigenous Peoples

9 August · United Nations international observance

A/RES/49/214

International Day of the World's Indigenous Women and Girls

5 September · United Nations / international observance

A/RES/80/10

International Day of UN Peacekeepers

29 May · United Nations / international observance

A/RES/57/129

International Day of University Sport

20 September · UNESCO international day

International Day of Veterinary Medicine

9 December · Veterinary/pet-awareness calendar usage; international in name, without evidence here of an intergovernmental designation

The Animal Medical Center lists International Day of Veterinary Medicine on December 9 across multiple annual veterinary-awareness calendars, including 2024, 2025 and 2026.

International Day of Women and Girls in Science

11 February · United Nations international observance

A/RES/70/212

International Day of Women and Girls of African Descent

25 July · United Nations / international observance

A/RES/78/323

International Day of Women in Diplomacy

24 June · United Nations / international observance

A/RES/76/269

International Day of Women in Multilateralism

25 January · UNESCO international day

UNESCO General Conference 41 C/Resolution 54 (adopted 23 November 2021); proposal document 41 C/57

International Day of Women Judges

10 March · United Nations international observance

A/RES/75/274

International Day of Yoga

21 June · United Nations international observance

A/RES/69/131

International Day of Zero Tolerance to Female Genital Mutilation

6 February · United Nations / international observance

A/RES/67/146

International Day of Zero Waste

30 March · United Nations / international observance

A/RES/77/161

International Day to Combat Islamophobia

15 March · United Nations international observance

A/RES/76/254

International Day to End Impunity for Crimes against Journalists

2 November · United Nations international observance

A/RES/68/163

International Day to End Obstetric Fistula

23 May · United Nations / international observance

A/RES/67/147

International Day to Protect Education from Attack

9 September · United Nations international observance

A/RES/74/275

International Delegate's Day

25 April · United Nations / international observance

A/RES/73/286