September 24, 2021
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World International Days List United Nations UN 2021

(Last Updated On: April 16, 2021)

In this World International Days list, we have placed the days declared by the UN and celebrated by their members by established resolutions of the United Nations, or of UN agencies such as UNESCO, UNEP, and WHO. Events according to this World International Days list are dedicated to raising awareness for global problems, remembering and commemorate past events, and celebrating culture, nature, and world heritage in all the countries and capitals. Particular activities and celebrations take place around the world during those days as per the World International Days list.

World International Days list 2021 UN

List of International Days declared and celebrated by the United Nations:

January 2021

4 January
World Braille Day

24 January
International Day of Education

27 January
International Day of Commemoration in Memory of the Victims of the Holocaust

February 2021

6 February
International Day of Zero Tolerance to Female Genital Mutilation

10 February
World Pulses Day

11 February
International Day of Women and Girls in Science

13 February
World Radio Day

20 February
World Day of Social Justice

21 February
International Mother Language Day

March 2021

1 March
Zero Discrimination Day

3 March
World Wildlife Day

8 March
International Women’s Day

20 March
International Day of Happiness

20 March
French Language Day (French)

21 March
International Day for the Elimination of Racial Discrimination

21 March
World Poetry Day

21 March
International Day of Nowruz

21 March
World Down Syndrome Day

21 March
International Day of Forests

22 March
World Water Day

23 March
World Meteorological Day

24 March
World Tuberculosis Day

24 March
International Day for the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims

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

25 March
International Day of Solidarity with Detained and Missing Staff Members

April 2021

2 April
World Autism Awareness Day

4 April
International Day for Mine Awareness and Assistance in Mine Action

5 April
International Day of Conscience

6 April
International Day of Sport for Development and Peace

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

7 April
World Health Day

12 April
International Day of Human Space Flight

14 April
World Chagas Disease Day

20 April
Chinese Language Day (Chinese)

21 April
World Creativity and Innovation Day

22 April
International Mother Earth Day

23 April
World Book and Copyright Day

23 April
English Language Day

23 April
Spanish Language Day (Spanish)

23 April (fourth Thursday of April)
International Girls in ICT Day

24 April
International Day of Multilateralism and Diplomacy for Peace

25 April
International Delegate’s Day

25 April
World Malaria Day

26 April
International Chernobyl Disaster Remembrance Day

26 April
World Intellectual Property Day

28 April
World Day for Safety and Health at Work

30 April
International Jazz Day

May 2021

2 May
World Tuna Day

3 May
World Press Freedom Day

7 May
“Vesak”, the Day of the Full Moon

8-9 May
Time of Remembrance and Reconciliation for Those Who Lost Their Lives During the Second World War

9 May (second Saturday of May)
World Migratory Bird Day

15 May
International Day of Families

16 May
International Day of Living Together in Peace

16 May
International Day of Light

17 May
World Telecommunication and Information Society Day

20 May
World Bee Day

21 May
International Tea Day

21 May
World Day for Cultural Diversity for Dialogue and Development

22 May
International Day for Biological Diversity

23 May
International Day to End Obstetric Fistula

29 May
International Day of UN Peacekeepers

31 May
World No-Tobacco Day

June 2021

1 June
Global Day of Parents

3 June
World Bicycle Day

4 June
International Day of Innocent Children Victims of Aggression

5 June
World Environment Day

5 June
International Day for the Fight against Illegal, Unreported and Unregulated Fishing

6 June
Russian Language Day (Russian)

7 June
World Food Safety Day

8 June
World Oceans Day

12 June
World Day Against Child Labour

13 June
International Albinism Awareness Day

14 June
World Blood Donor Day

15 June
World Elder Abuse Awareness Day

16 June
International Day of Family Remittances

17 June
World Day to Combat Desertification and Drought

18 June
Sustainable Gastronomy Day

19 June
International Day for the Elimination of Sexual Violence in Conflict

20 June
World Refugee Day

21 June
International Day of Yoga

21 June
International Day of the Celebration of the Solstice

23 June
United Nations Public Service Day

23 June
International Widows’ Day

25 June
Day of the Seafarer

26 June
International Day against Drug Abuse and Illicit Trafficking

26 June
United Nations International Day in Support of Victims of Torture

27 June
Micro-, Small and Medium-sized Enterprises Day

29 June
International Day of the Tropics

30 June
International Asteroid Day

30 June
International Day of Parliamentarism

July 2021

4 July (first Saturday of July)
International Day of Cooperatives

11 July
World Population Day15 July
World Youth Skills Day

18 July
Nelson Mandela International Day

20 July
World Chess Day

28 July
World Hepatitis Day

30 July
International Day of Friendship

30 July
World Day against Trafficking in Persons

August 2021

9 August
International Day of the World’s Indigenous Peoples

12 August
International Youth Day

19 August
World Humanitarian Day

21 August
International Day of Remembrance and Tribute to the Victims of Terrorism

22 August
International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief

23 August
International Day for the Remembrance of the Slave Trade and Its Abolition

29 August
International Day against Nuclear Tests

30 August
International Day of the Victims of Enforced Disappearances

September 2021

5 September
International Day of Charity

7 September
International Day of Clean Air for Blue Skies

8 September
International Literacy Day

9 September
International Day to Protect Education from Attack

12 September
United Nations Day for South-South Cooperation

15 September
International Day of Democracy

16 September
International Day for the Preservation of the Ozone Layer

17 September
World Patient Safety Day

18 September
International Equal Pay Day

21 September
International Day of Peace

23 September
International Day of Sign Languages

24 September (last Thursday of September)
World Maritime Day

26 September
International Day for the Total Elimination of Nuclear Weapons

27 September
World Tourism Day

28 September
International Day for Universal Access to Information

29 September
International Day of Awareness of Food Loss and Waste

30 September
International Translation Day

October 2021

1 October
International Day of Older Personn

2 October
International Day of Non-Violence

5 October
World Teachers’ Day

5 October (first Monday of October)
World Habitat Day

9 October
World Post Day

10 October
World Mental Health Day

10 October (second Saturday of October
World Migratory Bird Day

11 October
International Day of the Girl Child

13 October
International Day for Disaster Risk Reduction

15 October
International Day of Rural Women

16 October
World Food Day

17 October
International Day for the Eradication of Poverty

20 October (every five years, beginning in 2010)
World Statistics Day

24 October
United Nations Day

24 October
World Development Information Day

27 October
World Day for Audiovisual Heritage

31 October
World Cities Day

November 2021

2 November
International Day to End Impunity for Crimes against Journalists

5 November
World Tsunami Awareness Day

6 November
International Day for Preventing the Exploitation of the Environment in War and Armed Conflict

10 November
World Science Day for Peace and Development

14 November
World Diabetes Day

15 November (third Sunday of November)
World Day of Remembrance for Road Traffic Victims

16 November
International Day for Tolerance

19 November
World Toilet Day

19 November (third Thursday of November)
World Philosophy Day

20 November
Africa Industrialization Day

20 November
World Children’s Day

21 November
World Television Day

25 November
International Day for the Elimination of Violence against Women

29 November
International Day of Solidarity with the Palestinian People

30 November
Day of Remembrance for all Victims of Chemical Warfare

December 2021

1 December
World AIDS Day

2 December
International Day for the Abolition of Slavery

3 December
International Day of Persons with Disabilities

4 December
International Day of Banks

5 December
International Volunteer Day for Economic and Social Development

5 December
World Soil Day

7 December
International Civil Aviation Day

9 December
International Day of Commemoration and Dignity of the Victims of the Crime of Genocide and of the Prevention of this Crime

9 December
International Anti-Corruption Day

10 December
Human Rights Day

11 December
International Mountain Day

12 December
International Day of Neutrality

12 December
International Universal Health Coverage Day

18 December
International Migrants Day

18 December
Arabic Language Day (Arabic)

20 December
International Human Solidarity Day

World International Days list 2021 UNESCO

List of International Days declared and celebrated by the UNESCO:

January 2021

14 January

World Logic Day

24 January

International Day of Education
World Day for African and Afrodescendant Culture

27 January
International Day of Commemoration in Memory of the Victims of the Holocaust

February 2021

11 February
International Day of Women and Girls in Science

13 February
World Radio Day

21 February
International Mother Language Day

March 2021

4 March
World Engineering Day for Sustainable Development

8 March
International Women’s Day

14 March
International Day of Mathematics

20 March
International Francophonie Day

21 March
World Poetry Day
International Day for the Elimination of Racial Discrimination
International Day of Nowruz

22 March
World Water Day

April 2021

6 April
International Day of Sport for Development and Peace

15 April
World Art Day

23 April
World Book and Copyright Day

30 April
International Jazz Day

May 2021

3 May
World Press Freedom Day

5 May
African World Heritage Day
World Portuguese Language Day

16 May
International Day of Light
International Day of Living Together in Peace

21 May
World Day for Cultural Diversity for Dialogue and Development

22 May
International Day for Biological Diversity

June 2021

5 June
World Environment Day

8 June
World Oceans Day

17 June
World Day to Combat Desertification and Drought

July 2021

18 July
Nelson Mandela International Day

26 July
International Day for the Conservation of the Mangrove Ecosystem

August 2021

9 August
International Day of the World’s Indigenous People

12 August
International Youth Day

23 August
International Day for the Remembrance of the Slave Trade and its Abolition

September 2021

8 September
International Literacy Day

15 September
International Day of Democracy

20 September
International Day of University Sport

21 September
International Day of Peace

28 September
International Day for the Universal Access to Information

October 2021

5 October
World Teachers’ Day

11 October
International Day of the Girl Child

13 October
International Day for Disaster Reduction

17 October
International Day for the Eradication of Poverty

24 October
United Nations Day

27 October
World Day for Audiovisual Heritage

November 2021

First Thursday
International Day Against Violence and Bullying at School, including Cyberbullying

2 November
International Day to End Impunity for Crimes against Journalists

5 November
World Day of Romani Language
World Tsunami Awareness Day

10 November
World Science Day for Peace and Development

Third Thursday in November
World Philosophy Day ( 33 C/37) – UN website(link is external)

14 November
International Day against Illicit Trafficking in Cultural Property

16 November
International Day for Tolerance

18 November
International Day of Islamic Art

25 November
International Day for the Elimination of Violence against Women

26 November
World Olive Tree Day

29 November
International Day of Solidarity with the Palestinian People

December 2021

1 December
World AIDS Day

3 December
International Day of Persons with Disabilities

10 December
Human Rights Day

18 December
International Migrants Day

18 December
World Arabic Language Day

World International Days list 2021 WHO

List of International Days declared and celebrated by the WHO:

Official Health Days Declared By The World Health Organization

24 March
World TB Day

7 April
World Health Day

14 April
World Chagas Disease Day

25 April
World Malaria Day

24-30 April
World Immunization Week

5 May
World Hand Hygiene Day

12 May
Health for All Film Festival

31 May
World No Tobacco Day

7 June
World Food Safety Day

14 June
World Blood Donor Day

28 July
World Hepatitis Day

10 September
World Suicide Prevention Day

17 September
World Patient Safety Day

22 September
Walk the Talk

28 September
World Rabies Day

10 October
World Mental Health Day

20 to 26 October
International lead poisoning prevention week of action

18-24 November
World Antimicrobial Awareness Week

1 December
World AIDS Day

World Health Days 2021

Health Day Name                             Health Day Start Date            
World Cancer Day 04 February 2021
International Childhood Cancer Day 15 February 2021
Colorectal Cancer Awareness Month 01 March 2021
World Kidney Day 09 March 2021
World Tuberculosis (TB) Day 24 March 2021
GCC Oral Health Unified Week 27 March 2021
World Health Day 07 April 2021
World Immunization Week 24 April 2021
World Malaria Day 25 April 2021
World Asthma Day 02 May 2021
World Thalassemia Day 08 May 2021
World Hypertension Day 17 May 2021
World No Tobacco Day 31 May 2021
World Milk Day 01 June 2021
World Environment Day 05 June 2021
World Blood Donor Day 14 June 2021
World Sickle Cell Day 19 June 2021
International Day against Drug Abuse and Illicit Trafficking 26 June 2021
World Hepatitis Day 28 July 2021
World Breastfeeding Week 01 August 2021
World Alzheimer’s Day 21 September 2021
World Heart Day 29 September 2021
Breast Cancer Awareness Month 01 October 2021
International Day of Older Persons 01 October 2021
World Mental Health Day 10 October 2021
World Anti-Obesity Day 11 October 2021
World Arthritis Day 12 October 2021
Global Handwashing Day 15 October 2021
World Food Day 16 October 2021
World Osteoporosis Day 20 October 2021
World Polio Day 24 October 2021
Lung Cancer Awareness Month 01 November 2021
World Diabetes Day 14 November 2021
World Antibiotic Awareness Week 14 November 2021
World COPD Day 15 November 2021
World Prematurity Day 17 November 2021
World AIDS Day 01 December 2021
International Day of Persons with Disabilities 03 December 2021

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