World days

The link that describe World International Days calendar
http://www.altiusdirectory.com/Society/world-days-list.php
List of International World Days:

World Days in January 2011
27 International Day of Commemoration in memory of the victims of the Holocaust

World Days in February 2011
4 World Cancer Day
20 World Day of Social Justice
21 International Mother Language Day

World Days in March 2011
8 International Women's Day and
United Nations Day for Women's Rights and International Peace
21 International Day for the Elimination of Racial Discrimination
21-28 Week of Solidarity with the Peoples Struggling against Racism and Racial Discrimination
22 World Water Day
23 World Meteorological Day
24 World Tuberculosis Day

World Days in April 2011
4 International Day for Mine Awareness and Assistance in Mine Action
7 World Health Day
23 World Book and Copyright Day

World Days in May 2011
1 International Labor Day
3 World Press Freedom Day
5 World Athletics Day
8 World Red Cross Day
12 International Nurses Day
15 International Day of Families
17 World Information Society Day
21 World Day for Cultural Diversity for Dialogue and Development
22 International Day for Biological Diversity
25-June 1 Week of Solidarity with the Peoples of Non-Self-Governing Territories
29 International Day of United Nations Peacekeepers
31 World No-Tobacco Day
1st Tuesday of May World Asthma Day

World Days in June 2011
1 International children's day
4 International Day of Innocent Children Victims of Aggression
5 World Environment Day
17 World Ocean Day
17 World Day to Combat Desertification and Drought
20 World Refugee Day
21 World Music Day
23 United Nations Public Service Day
26 International Anti Drugs Day and International Day in Support of Victims of Torture

World Days in July 2011
First Saturday International Day of Cooperatives
2 World Sports Journalists Day
6 World Zonnosis Day
11 World Population Day

World Days in August 2011
9 International Day of the World's Indigenous People
12 International Youth Day
23 International Day for the Remembrance of the Slave Trade and its Abolition

World Days in September 2011
8 International Literacy Day
15 International Day of Democracy
16 International Day for the Preservation of the Ozone Layer
19 International Talk Like A Pirate Day
21 International Day of Peace
24 World Heart Day
27 World Tourism Day
During last Week World Maritime Day

World Days in October 2011
1 World Vegetarian Day and International Day for Older Persons
2 World Farm Animals Day
4 World Animal Day
4 - 10 World Space Week
5 World Teacher's Day
First Monday World Habitat Day
Second Wednesday International Day for Natural Disaster Reduction
9 World Post Day
10 World Egg Day and World Mental Health Day
15 Global Handwashing Day
16 World Food Day
17 International Day for the Eradication of Proverty
24 United Nations Day and World Development Information Day
24-30 Disarmament Week
25 World Pasta Day
First Monday of October World Habitat Day

World Days in November 2011
6 International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
14 World Diabetes Day
16 International Day of Tolerance
Third Sunday World Day of Remembrance for Road Traffic Victims
20 Universal Children's Day, and Africa Industrialization Day
21 World Television Day
25 International Day for the Elimination of Violence against Women
29 International Day of Solidarity with the Palestinian People

World Days in December 2011
1 World AIDS Day
2 International Day for the Abolition of Slavery
3 International Day of Disabled Persons
5 International Volunteer Day for Economic and Social Development
7 International Civil Aviation Day
9 International Anti Corruption Day
10 Human Rights Day
11 International Mountain Day
18 International Migrants Day
19 United Nations Day for South-South Cooperation
20 International Human Solidarity Day