Important International Days

Here is the list of official annual international days that are announced by United Nations

These days can be proposed by UN members and are established by resolutions of the United Nations or of UN agencies like UNESCO, UNEP and WHO. They are meant to raise awareness for global problems, to remember and commemorate past events and to celebrate culture, nature and world heritage. On many of them, activities and celebrations take place around the world.

January

24. January
International Day of Education

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

February

4. February
World Cancer Day

6. February
International Day of Zero Tolerance to Female Genital Mutilation

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

1. March
Zero Discrimination Day

3. March
World Wildlife Day

8. March
International Women's Day

20. March
International Day of Happiness

21. March
International Day for the Elimination of Racial Discrimination

21. March
World Poetry Day

21. March
International Day of Nowruz
[Persian New Year]

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

2. April
World Autism Awareness Day

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

6. April
International Day of Sport for Development and Peace

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

7. April
World Health Day

12. April
International Day of Human Space Flight

18. April
International Day For Monuments and Sites

21. April
World Creativity and Innovation Day

22. April
Earth Day

23. April
World Book and Copyright 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

29. April
Day of Remembrance for all Victims of Chemical Warfare

29. April
International Dance Day

30. April
International Jazz Day

May

First full moon in May
Vesak, the Day of the Full Moon
[Buddha Day]

2. May
World Tuna Day

3. May
World Press Freedom Day

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

Second weekend in 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
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

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

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

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

First Saturday in July
International Day of Cooperatives

11. July
World Population Day

15. July
World Youth Skills Day

18. July
Nelson Mandela International Day

28. July
World Hepatitis Day

30. July
International Day of Friendship

30. July
World Day against Trafficking in Persons

August

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

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

5. September
International Day of Charity

8. September
International Literacy Day

10. September
World Suicide Prevention Day

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

21. September
International Day of Peace

23. September
International Day of Sign Languages

26. September
International Day for the Total Elimination of Nuclear Weapons

27. September
World Tourism Day

28. September
World Rabies Day

28. September
International Day for Universal Access to Information

30. September
International Translation Day

Last Thursday of September
World Maritime Day

October

First Monday in October
World Habitat Day

1. October
International Day of Older Persons

2. October
International Day of Non-Violence

5. October
World Teachers’ Day

9. October
World Post Day

10. October
World Mental Health Day

11. October
International Day of the Girl Child

13. October
International Day for Disaster Reduction

15. October
International Day of Rural Women

15. October
Global Handwashing Day

16. October
World Food Day

17. October
International Day for the Eradication of Poverty

20. October (every five years, years divisible by 5)
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

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

16. November
International Day for Tolerance

Third Thursday in November
World Philosophy Day

Third Sunday in November
World Day of Remembrance for Road Traffic Victims

19. November
World Toilet Day

20. November
Africa Industrialization Day

20. November
Universal 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

December

1. December
World AIDS Day

2. December
International Day for the Abolition of Slavery

3. December
International Day of Persons with Disabilities

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

18. December
International Migrants Day

20. December
International Human Solidarity Day

Source:http://www.un.org/en/sections/observances/international-days/