International Year
United Nations observance
International Year of Chemistry
world day
International Year of Forests
world year
International Year for Disabled Persons
1981 UN theme year
International Year of Soil
2015 UN theme year
First International Polar Year
prequel to Second International Polar Year and Third International Polar Year
International Year of Microcredit
international Year
International Year of Planet Earth
international year designated by the United Nations
International Year of Older Persons
world day
International Year of the Child
1979 UN theme year
International Space Year
in 1992, promoting space exploration
International Year of Light
2015 United Nations observance to raise awareness of light science and its applications
Ethiopian third millennium
New Year event for third millennium in Ethiopia in 2007
International Geophysical Year
period of international collaboration in the Earth sciences (1957-58)
International Year of Biodiversity
2010 observance
International Year of Crystallography
2014 event for X-ray crystallography
International Year of Sanitation
2008 United Nations year
International Year of Indigenous Languages
2019 United Nations observance focusing on the endangerment of Indigenous languages
International Year of Millets
2023 celebration of food grain
International Year of Peace
1986 UN theme year
International Year of Astronomy
2009 UN theme year
International Year of Natural Fibres
United Nations observance of 2009
International Year of Rice
2004 UN-designated observance
International Women's Year
1975 UN theme year
International Year of Volunteers
United Nations General Assembly initiative in favour of volunteering
International Year of Languages
international year
International Year of Shelter for the Homeless
UN recognised year
International Polar Year
efforts with intensive research foci on the polar regions