| Date | Day | International Day | CW |
|---|---|---|---|
January 2023 |
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| 04.01.2023 | We | World Braille Day | 01 |
| 24.01.2023 | Tu | International Day of Education | 04 |
| 27.01.2023 | Fr | International Day of Commemoration in Memory of the Victims of the Holocaust | 04 |
February 2023 |
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| 02.02.2023 | Th | World Wetlands Day | 05 |
| 06.02.2023 | Mo | International Day of Zero Tolerance for Female Genital Mutilation | 06 |
| 11.02.2023 | Sa | International Day of Women and Girls in Science | 06 |
| 13.02.2023 | Mo | World Radio Day | 07 |
| 20.02.2023 | Mo | World Day of Social Justice | 08 |
| 21.02.2023 | Tu | International Mother Language Day | 08 |
March 2023 |
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| 03.03.2023 | Fr | World Day of Prayer | 09 |
| 03.03.2023 | Fr | World Wildlife Day | 09 |
| 08.03.2023 | We | International Women's Day | 10 |
| 20.03.2023 | Mo | International Day of Happiness | 12 |
| 21.03.2023 | Tu | International Day for the Elimination of Racial Discrimination | 12 |
| 21.03.2023 | Tu | World Poetry Day | 12 |
| 21.03.2023 | Tu | World Down Syndrome Day | 12 |
| 22.03.2023 | We | World Water Day | 12 |
| 23.03.2023 | Th | World Meteorological Day | 12 |
| 24.03.2023 | Fr | World Tuberculosis Day | 12 |
| 25.03.2023 | Sa | International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade | 12 |
| 26.03.2023 | Su | Purple Day for Epilepsy | 12 |
April 2023 |
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| 02.04.2023 | Su | World Autism Awareness Day | 13 |
| 04.04.2023 | Tu | International Day for Mine Awareness and Support for Mine Action Programmes | 14 |
| 07.04.2023 | Fr | World Health Day | 14 |
| 08.04.2023 | Sa | International Romani Day | 14 |
| 22.04.2023 | Sa | Earth Day | 16 |
| 23.04.2023 | Su | World Book and Copyright Day | 16 |
| 26.04.2023 | We | World Intellectual Property Day | 17 |
May 2023 |
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| 03.05.2023 | We | World Press Freedom Day | 18 |
| 05.05.2023 | Fr | Europe Day of the Council of Europe (CoE) | 18 |
| 08.05.2023 | Mo | Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War | 19 |
| 08.05.2023 | Mo | World Red Cross Day | 19 |
| 09.05.2023 | Tu | Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War | 19 |
| 09.05.2023 | Tu | Europe Day of the European Union (EU) | 19 |
| 12.05.2023 | Fr | International Nurses Day | 19 |
| 15.05.2023 | Mo | International Day of Families | 20 |
| 17.05.2023 | We | World Telecommunication and Information Society Day | 20 |
| 21.05.2023 | Su | World Day for Cultural Diversity for Dialogue and Development | 20 |
| 22.05.2023 | Mo | International Day for Biological Diversity | 21 |
| 25.05.2023 | Th | Week of Solidarity with the Peoples of All Colonial Territories Fighting for Freedom, Independence, and Human Rights (25.05. - 31.05.) | 21 |
| 29.05.2023 | Mo | Day of United Nations Peacekeepers | 22 |
| 31.05.2023 | We | World No-Tobacco Day | 22 |
June 2023 |
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| 04.06.2023 | Su | International Day of Innocent Children Victims of Aggression | 22 |
| 05.06.2023 | Mo | World Environment Day | 23 |
| 14.06.2023 | We | World Blood Donor Day | 24 |
| 17.06.2023 | Sa | World Day to Combat Desertification and Drought | 24 |
| 20.06.2023 | Tu | World Refugee Day | 25 |
| 21.06.2023 | We | International Day of Yoga | 25 |
| 23.06.2023 | Fr | United Nations Public Service Day | 25 |
| 26.06.2023 | Mo | United Nations International Day in Support of Victims of Torture | 26 |
| 26.06.2023 | Mo | United Nations International Day in Support of Victims of Torture | 26 |
July 2023 |
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| 01.07.2023 | Sa | International Day of Cooperatives | 26 |
| 11.07.2023 | Tu | World Population Day | 28 |
| 30.07.2023 | Su | International Day of Friendship | 30 |
August 2023 |
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| 12.08.2023 | Sa | International Youth Day | 32 |
| 23.08.2023 | We | International Day for the Remembrance of the Slave Trade and Its Abolition | 34 |
September 2023 |
|||
| 08.09.2023 | Fr | International Literacy Day | 36 |
| 15.09.2023 | Fr | International Day of Democracy | 37 |
| 16.09.2023 | Sa | International Day for the Preservation of the Ozone Layer | 37 |
| 20.09.2023 | We | Universal Children’s Day (AT, DE) | 38 |
| 21.09.2023 | Th | International Day of Peace | 38 |
| 21.09.2023 | Th | World Alzheimer's Day | 38 |
| 23.09.2023 | Sa | International Day of Sign Languages | 38 |
| 27.09.2023 | We | World Tourism Day | 39 |
| 28.09.2023 | Th | World Maritime Day | 39 |
| 30.09.2023 | Sa | Day of deaf people | 39 |
October 2023 |
|||
| 01.10.2023 | Su | International Day of Older Persons | 39 |
| 02.10.2023 | Mo | International Day of Non-Violence | 40 |
| 02.10.2023 | Mo | World Habitat Day | 40 |
| 04.10.2023 | We | World Space Week (04.10.-10.10.) | 40 |
| 05.10.2023 | Th | World Teachers’ Day | 40 |
| 09.10.2023 | Mo | World Post Day | 41 |
| 10.10.2023 | Tu | World Mental Health Day | 41 |
| 15.10.2023 | Su | International Day of Rural Women | 41 |
| 16.10.2023 | Mo | World Food Day | 42 |
| 17.10.2023 | Tu | International Day for the Eradication of Poverty | 42 |
| 24.10.2023 | Tu | United Nations Day | 43 |
| 24.10.2023 | Tu | World Development Information Day | 43 |
| 24.10.2023 | Tu | Disarmament Week (24.10. - 30.10.) | 43 |
| 27.10.2023 | Fr | World Day for Audiovisual Heritage | 43 |
November 2023 |
|||
| 06.11.2023 | Mo | International Day for Preventing the Exploitation of the Environment in War and Armed Conflict | 45 |
| 14.11.2023 | Tu | World Diabetes Day | 46 |
| 16.11.2023 | Th | World Day of Remembrance for Road Traffic Victims | 46 |
| 18.11.2023 | Sa | World Day of Remembrance for Road Traffic Victims | 46 |
| 19.11.2023 | Su | International Men's Day | 46 |
| 20.11.2023 | Mo | Universal Children's Day | 47 |
| 21.11.2023 | Tu | World Television Day | 47 |
| 25.11.2023 | Sa | International Day for the Elimination of Violence against Women | 47 |
| 29.11.2023 | We | International Day of Solidarity with the Palestinian People | 48 |
December 2023 |
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| 01.12.2023 | Fr | World AIDS Day | 48 |
| 02.12.2023 | Sa | International Day for the Abolition of Slavery | 48 |
| 03.12.2023 | Su | International Day of Persons with Disabilities | 48 |
| 05.12.2023 | Tu | International Volunteer Day for Economic and Social Development | 49 |
| 07.12.2023 | Th | International Civil Aviation Day | 49 |
| 09.12.2023 | Sa | International Anti-Corruption Day | 49 |
| 10.12.2023 | Su | Human Rights Day | 49 |
| 11.12.2023 | Mo | International Mountain Day | 50 |
| 18.12.2023 | Mo | International Migrants Day | 51 |
| 20.12.2023 | We | International Human Solidarity Day | 51 |
Errors excepted. No guarantee for the correctness of the data.
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