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22 March 23 March 24 March 25 March
2 April 4 April 7 April 12 April 22 April 23 April 25 April 26 April 28 April 29 April 30 April Day of full moon in May 3 May 8–9 May 12–13 May 15 May 17 May 21 May 22 May 23 May 29 May 31 May 1 June 4 June 5 June 8 June 12 June 14 June 15 June 17 June 20 June 23 June 25 June 26 June
Basic Facts about the United Nations International Day of Forests and the Tree World Poetry Day (UNESCO) World Water Day World Meteorological Day (WMO) International Day for the Right to the Truth concerning Gross Human Rights Violations and for the Dignity of Victims World Tuberculosis Day (WHO) International Day of Remembrance of the Victims of Slavery and the Transatlantic Slave Trade International Day of Solidarity with Detained and Missing Staff Members World Autism Awareness Day International Day for Mine Awareness and Assistance in Mine Action World Health Day (WHO) Day of Remembrance of the Victims in Rwanda Genocide International Day of Human Space Flight International Mother Earth Day World Book and Copyright Day (UNESCO) World Malaria Day (WHO) World Intellectual Property Day (WIPO) World Day for Safety and Health at Work (ILO) Day of Remembrance for all Victims of Chemical Warfare International Jazz Day Day of Vesak World Press Freedom Day Time of Remembrance and Reconciliation for Those Who Lost Their Lives during the Second World War World Migratory Bird Day (UNEP) International Day of Families World Telecommunication and Information Society Day (ITU) World Day for Cultural Diversity for Dialogue and Development International Day for Biological Diversity International Day to End Obstetric Fistula International Day of UN Peacekeepers World No-Tobacco Day (WHO) Global Day of Parents International Day of Innocent Children Victims of Aggression World Environment Day (UNEP) World Oceans Day World Day Against Child Labour (ILO) World Blood Donor Day (WHO) World Elder Abuse Awareness Day World Day to Combat Desertification and Drought World Refugee Day International Widows’ Day United Nations Public Service Day Day of the Seafarer (IMO) International Day against Drug Abuse and Illicit Trafficking