20th March

International Day of Happiness

21st March

International Day for the Elimination of Racial Discrimination

21st March

World Poetry Day [UNESCO]

21st March

International Day of Nowruz

21st March

World Down Syndrome Day

21st March

International Day of Forests and the Tree

22nd March

World Water Day

23rd March

World Meteorological Day  [WMO]

24th March

World Tuberculosis Day [WHO]

24th March

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

25th March

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

25th March

International Day of Solidarity with Detained and Missing Staff Members

2nd April

World Autism Awareness Day

4th April

International Day for Mine Awareness and Assistance in Mine Action

7th April

Day of Remembrance of the Victims of the Rwanda Genocide

7th April

World Health Day [WHO]

12th April

International Day of Human Space Flight

22nd April

International Mother Earth Day

23rd April

World Book and Copyright Day

23rd April

English Language Day 

25th April

World Malaria Day [WHO]

26th April

World Intellectual Property Day [WIPO]

28th April

World Day for Safety and Health at Work [ILO]

29th April

Day of Remembrance for all Victims of Chemical Warfare

30th April

International Jazz Day

3rd May

World Press Freedom Day

5th May

Day of Vesak

8th-9th May

Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War

12th-13th May

World Migratory Bird Day [UNEP]

15th May

International Day of Families

17th May

World Telecommunication and Information Society Day [ITU]

21st May

World Day for Cultural Diversity for Dialogue and Development

22th May

International Day for Biological Diversity

29th May

International Day of UN Peacekeepers

31st May

World No-Tobacco Day [WHO]

1st June

Global Day of Parents

4th June

International Day of Innocent Children Victims of Aggression

5th June

World Environment Day [UNEP]

8th June

World Oceans Day

12th June

World Day Against Child Labour [ILO]

14th June

World Blood Donor Day [WHO]

15th June

World Elder Abuse Awareness Day

17th June

World Day to Combat Desertification and Drought

20th June

World Refugee Day

23rd June

United Nations Public Service Day

23rd June

International Widow’s Day

25th June

Day of the Seafarer [IMO]

26th June

International Day against Drug Abuse and Illicit Trafficking

26th June

United Nations International Day in Support of Victims of Torture

6th July
(First Saturday
in July)

International Day of Cooperatives

11th July

World Population Day

18th July

Nelson Mandela International Day

28th July

World Hepatitis Day [WHO]

30th July

International Day of Friendship

9th August

International Day of the World's Indigenous People

12th August

International Youth Day

19th August

World Humanitarian Day

23rd August

International Day for the Remembrance of the Slave Trade and Its Abolition [UNESCO]

29th August

International Day against Nuclear Tests

30th August

International Day of the Victims of Enforced Disappearances

5th September

International Day of Charity

8th September

International Literacy Day [UNESCO]

10th September

World Suicide Prevention Day [WHO]

12th September

United Nations Day for South-South Cooperation

15th September

International Day of Democracy

16th September

International Day for the Preservation of the Ozone Layer

21st September

International Day of Peace

26th September
(Last week of September)

World Maritime Day [IMO]

27th September

World Tourism Day [UNWTO]

28th September

World Rabies Day [WHO]

28th September
(Last Saturday in September)

World Heart Day [WHO]

7 October
(First Monday
in October)

World Habitat Day

1st October

International Day of Older Persons

2nd October

International Day of Non-Violence

5th October

World Teachers’ Day [UNESCO]

9th October

World Post Day

10th October

World Mental Health Day [WHO]

10th October (Second Thursday
in October)

World Sight Day [WHO]

11th October

International Day of the Girl Child

13th October

International Day for Disaster Reduction

15th October

International Day of Rural Women

16th October

World Food Day [FAO]

17th October

International Day for the Eradication of Poverty

24th October

United Nations Day

24th October

World Development Information Day

27th October

World Day for Audiovisual Heritage [UNESCO]

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 [UNESCO]

12 November

World Pneumonia Day [WHO]

14 November

World Diabetes Day [WHO]

16 November

International Day for Tolerance

16 November

World Chronic Obstructive Pulmonary Disease Day [WHO]

18th November
(Third Sunday
in November)

World Day of Remembrance for Road Traffic Victims [WHO]

20th November

Universal Children’s Day

20th November

Africa Industrialization Day

21st November
(Third Thursday
in November)

World Philosophy Day [UNESCO]

21st November

World Television Day

25th November

International Day for the Elimination of Violence against Women

29th November

International Day of Solidarity with the Palestinian People

1st December

World AIDS Day

2nd December

International Day for the Abolition of Slavery

3rd December

International Day of Persons with Disabilities

5th December

International Volunteer Day for Economic and Social Development

7th December

International Civil Aviation Day [ICAO]

9th December

International Anti-Corruption Day

10th December

Human Rights Day

11th December

International Mountain Day

18th December

International Migrants Day

20th December

International Human Solidarity Day