The International Days Calendar presents the dates of events which, often promoted by the United Nations, are celebrated or commemorated on a worldwide level.

The primary objective of International or World Days is to promote awareness of a particular activity or topic of interest every year by gaining worldwide attention.

As the principal promoter of International Days are groups belonging to the United Nations, they are often created for the purpose of promoting worthwhile causes, such as, preservation of the planet´s resources and recognition of the Rights to Equality, Healthcare and Education.

International Days in January

• 27^th January: International Day of Commemoration in Memory of the Victims of the Holocaust

International Days in February

• 4^th February: World Cancer Day
• 13^th February: World Radio Day
• 20^th February: World Day of Social Justice
• 21^st February: International Mother Language Day

International Days in March

• 4^th February: World Cancer Day
• 13^th February: World Radio Day
• 20^th February: World Day of Social Justice
• 21^st February: International Mother Language Day

International Days in April

• 2^nd April: World Autism Awareness Day
• 4^th April: International Day for Mine Awareness and Assistance in Mine Action
• 6^th April: International Day of Sport for Development and Peace
• 7^th April:Day of Remembrance of the Victims of the Rwanda Genocide
• 7^th April: World Health Day
• 12^th April: International Day of Human Space Flight
• 22nd April: International Mother Earth Day
• 23rd April: International Mother Earth Day
• 23rd April: World Book and Copyright Day
• 23rd April: English Language Day
• 25th April: World Malaria Day
• 28th April: World Day for Safety and Health at Work
• 29th April: Day of Remembrance for all Victims of Chemical Warfare
• 30th April: International Jazz Day

International Days in May

• 3^rd May: World Press Freedom Day
• 8-9^th May: Time of Remembrance and Reconciliation for those who lost their lives during the Second World War
• 15^th May: International Day of Families
• 21^st May: World Day for Cultural Diversity for Dialogue and Development
• 22^nd May: International Day for Biological Diversity
• 31^st May: World No Tobacco Day

International Days in June

• 1^st June: Global Day of Parents
• 4^th June: International Day of Innocent Children Victims of Aggression
• 5^th June: World Environment Day
• 8^th June: World Oceans Day
• 12^th June: World Day against Child Labor
• 14^th June: World Blood Donor Day
• 15^th June: World Elder Abuse Awareness Day
• 17^th June: World Day to Combat Desertification and Drought
• 20^th June: World Refugee Day
• 23^rd June: United Nations Public Service Day
• 23^rd June: International Widows´ Day
• 26^th June: International Day against Drug Abuse and Illicit Trafficking
• 26^th June: United Nations International Day in Support of Victims of Torture

International Days in July

• 11^th July: World Population Day
• 18^th July: Nelson Mandela International Day
• 28^th July: World Hepatitis Day
• 30^th July: International Day of Friendship

International Days in August

• 12^th August: International Youth Day
• 19^th August: World Humanitarian Day
• 23^rd August: International Day for the Remembrance of the Slave Trade and its Abolition
• 29^th August: International Day against Nuclear Tests

International Days in September

• 5^th September: International Day of Charity
• 8^th September: International Literacy Day
• 15^th September: International Day of Democracy
• 16^th September: International Day for the Preservation of the Ozone Layer
• 21^st September: International Day of Peace
• 25^th September: World Maritime Day
• 27^th September: World Tourism Day

International Days in October

• 1^st October: International Day of Older Persons
• 2^nd October: International Day of Non-Violence
• 5^th October: World Teachers´ Day
• 9^th October: World Post Day
• 16^th October: World Food Day
• 17^th October: International Day for the Eradication of Poverty
• 24^th October: United Nations Day

International Days in November

• 6^th November: International Day for Preventing the Exploitation of the Environment in War and Armed Conflict
• 10^th November: World Science Day for Peace and Development
• 16^th November: International Day for Tolerance
• 16^th November (3^rd Sunday in Nov): World Day of Remembrance for Road Traffic Victims
• 20^th November: Universal Children´s Day
• 21^st November: World Television Day
• 25^th November: International Day for the Elimination of Violence against Women
• 29^th November: International Day of Solidarity with the Palestinian People

International Days in December

• 1^st December: World AIDS Day
• 2^nd December: International Day for the Abolition of Slavery
• 3^rd December: International Day of Persons with Disabilities
• 5^th December: World Soil Day
• 9^th December: International Anti-Corruption Day
• 10^th December: Human Rights Day
• 18^th December: International Migrants Day
• 20^th December: International Human Solidarity Day