International Years and Decades: UN List and Exam Facts
Exam notes on the international years and decades declared by the United Nations: the year-wise list, the decades in progress and India's own proposals.
By GK24 Editorial Team· Published · 4 min read

The United Nations sets aside a whole year, and sometimes a whole decade, to draw the world's attention to one subject. Such a year is declared by a resolution of the General Assembly, usually after a member state proposes it and a specialised agency agrees to lead the work. For a student this chapter is a list to be learnt, because the question is always of one kind: which year was observed as the International Year of something, or which decade carries a given name.
How a year is declared and who runs it
A member state, or a group of states, moves a draft resolution in the General Assembly. Once the Assembly adopts it, one agency of the United Nations becomes the lead body for that year: the Food and Agriculture Organization for years about crops and farming, UNESCO for years about science, languages and culture, the World Health Organization for health, and the United Nations Environment Programme for the environment. The year carries a theme and a logo, member states hold events, and the Assembly later receives a report. An international year is therefore larger than an international day, which lasts one date, and smaller than an international decade, which runs for ten years.
International Years, year by year
| Year | Declared as |
|---|---|
| 2025 | International Year of Glaciers' Preservation; also of Quantum Science and Technology, and of Cooperatives |
| 2024 | International Year of Camelids |
| 2023 | International Year of Millets |
| 2022 | International Year of Artisanal Fisheries and Aquaculture; also of Glass, and of Basic Sciences for Sustainable Development |
| 2021 | International Year of Fruits and Vegetables; also for the Elimination of Child Labour, and of Peace and Trust |
| 2020 | International Year of Plant Health |
| 2019 | International Year of Indigenous Languages; also of the Periodic Table of Chemical Elements |
| 2016 | International Year of Pulses |
| 2015 | International Year of Soils; also of Light and Light-based Technologies |
| 2014 | International Year of Family Farming; also of Crystallography |
| 2013 | International Year of Water Cooperation; also of Quinoa |
| 2012 | International Year of Cooperatives; also of Sustainable Energy for All |
| 2011 | International Year of Forests; also of Chemistry |
| 2010 | International Year of Biodiversity; also of Youth |
| 2009 | International Year of Astronomy; also of Natural Fibres |
| 2008 | International Year of the Potato; also of Planet Earth, of Languages and of Sanitation |
The Indian connection
India proposed that 2023 be observed as the International Year of Millets, the proposal was supported by more than seventy countries and the General Assembly adopted it in 2021, with the Food and Agriculture Organization as the lead agency. The reason is easy to state in an examination: millets such as jowar, bajra and ragi need little water, grow on poor soil and are rich in fibre, iron and calcium, which suits both the climate and the nutrition of dry regions. India used the year to promote millets at home as Shree Anna and served them at official events. The International Year of Pulses in 2016 has a similar importance for India, which is the largest producer as well as the largest consumer of pulses, and 2015 gave India another success, when the General Assembly accepted its proposal to observe 21 June as the International Day of Yoga.
International Decades in progress
| Period | Declared as |
|---|---|
| 2021 to 2030 | UN Decade on Ecosystem Restoration |
| 2021 to 2030 | Decade of Ocean Science for Sustainable Development |
| 2021 to 2030 | Decade of Healthy Ageing |
| 2021 to 2030 | Second Decade of Action for Road Safety |
| 2022 to 2032 | International Decade of Indigenous Languages |
| 2019 to 2028 | Nelson Mandela Decade of Peace |
| 2018 to 2028 | International Decade for Action: Water for Sustainable Development |
| 2015 to 2024 | International Decade for People of African Descent |
| 2011 to 2020 | United Nations Decade on Biodiversity |
Why the list is easy to lose marks on
Every option in these questions is a real international year, only for a different year. A paper may ask about 2023 and offer millets, pulses, camelids and plant health, all of which are genuine designations. The only defence is to learn the number with the name, and to use the pairs that are easy to fix in memory: pulses in 2016 and millets in 2023, both from farming; plant health in 2020, the year of a human health crisis; indigenous languages in a single year, 2019, and then a whole decade from 2022. Where two names belong to one year, learn the one an Indian paper is likelier to ask, which is usually the year about crops or farming.
How to revise this chapter
Read the list backwards from the present year, because papers ask about the last four or five years far more often than about the older ones. Then learn every year connected with agriculture, because the Food and Agriculture Organization leads the largest number of these years and Indian papers favour them. Finally learn the four decades that run to 2030, since a decade question is almost always about ecosystem restoration, ocean science or road safety.
Exam Point of View
Questions come in three shapes. The first names a year and asks its designation, or names a designation and asks the year; the last four or five years are asked most often, so revise those first. The second asks who declares such a year, and the answer is the United Nations General Assembly, not UNESCO or the Food and Agriculture Organization, which only lead the work once a year is declared. The third asks about India: which year was observed as the International Year of Millets, which country proposed it, and which crop group it covers. The trap in every case is that all four options are genuine international years placed against the wrong number, so learn the year and the name as one pair. Decade questions are fewer and almost always concern the four decades ending in 2030, especially ecosystem restoration and ocean science.
Important Facts
| Body that declares an international year | United Nations General Assembly, through a resolution |
|---|---|
| International Year of Millets | 2023, proposed by India, led by the FAO |
| International Year of Camelids | 2024 |
| International Year of Glaciers' Preservation | 2025 |
| International Year of Fruits and Vegetables | 2021 |
| International Year of Plant Health | 2020 |
| International Year of Indigenous Languages | 2019 |
| International Year of Pulses | 2016 |
| International Year of Soils | 2015 |
| International Year of Forests | 2011 |
| International Year of Biodiversity | 2010 |
| UN Decade on Ecosystem Restoration | 2021 to 2030 |
| International Decade of Indigenous Languages | 2022 to 2032 |
| Nelson Mandela Decade of Peace | 2019 to 2028 |
| International Day of Yoga | 21 June, on India's proposal accepted in 2014 |
Practice MCQs on this topic
The year 2023 was observed as the International Year of:
- A.Pulses
- B.Millets
- C.Camelids
- D.Plant Health
Show answer
The United Nations General Assembly declared 2023 the International Year of Millets on a proposal moved by India and supported by more than seventy countries, and the Food and Agriculture Organization led the observance; India promoted the crops at home under the name Shree Anna.
Read the full explanation →Which country proposed that 2023 be observed as the International Year of Millets?
- A.Brazil
- B.India
- C.Nigeria
- D.China
Show answer
India moved the proposal, it was supported by more than seventy member states, the General Assembly adopted it in 2021 and the year was observed in 2023 with the Food and Agriculture Organization as the lead agency.
Read the full explanation →Which body declares an International Year?
- A.UNESCO
- B.The United Nations Security Council
- C.The United Nations General Assembly
- D.The Food and Agriculture Organization
Show answer
An international year exists because the Assembly, in which every member state has one vote, adopts a resolution declaring it, usually on a proposal from one or more states.
Read the full explanation →The year 2024 was declared by the United Nations as the International Year of:
- A.Camelids
- B.Glass
- C.Quinoa
- D.Natural Fibres
Show answer
The year 2024 was the International Year of Camelids, the family of animals that includes camels, llamas, alpacas, vicunas and guanacos, which carry loads, give milk, meat and wool, and support families in deserts and high mountains where little else can live.
Read the full explanation →The year 2020 was observed as the International Year of:
- A.Soils
- B.Plant Health
- C.Family Farming
- D.Fruits and Vegetables
Show answer
The General Assembly declared 2020 the International Year of Plant Health to show how protecting plants from pests and diseases protects food supply, trade and the environment, and the Food and Agriculture Organization led the year.
Read the full explanation →The International Year of Pulses was observed in:
- A.2014
- B.2015
- C.2016
- D.2018
Show answer
The year 2016 was the International Year of Pulses, led by the Food and Agriculture Organization, and it drew attention to crops such as gram, arhar, moong, urad and masoor, which give protein cheaply and fix nitrogen in the soil.
Read the full explanation →The year 2019 was declared the International Year of Indigenous Languages as well as the International Year of:
- A.Chemistry
- B.The Periodic Table of Chemical Elements
- C.Light
- D.Crystallography
Show answer
The year 2019 marked one hundred and fifty years since Dmitri Mendeleev arranged the elements in his table in 1869, and the United Nations declared it the International Year of the Periodic Table alongside the International Year of Indigenous Languages.
Read the full explanation →The United Nations Decade on Ecosystem Restoration covers which period?
- A.2011 to 2020
- B.2015 to 2024
- C.2021 to 2030
- D.2022 to 2032
Show answer
The Decade on Ecosystem Restoration runs from 2021 to 2030, the same ten years as the Sustainable Development Goals, and it is led jointly by the United Nations Environment Programme and the Food and Agriculture Organization; its aim is to revive damaged forests, wetlands, grasslands and coasts.
Read the full explanation →The years 2022 to 2032 have been declared by the United Nations as the International Decade of:
- A.Indigenous Languages
- B.Healthy Ageing
- C.Ocean Science
- D.Water for Sustainable Development
Show answer
After the International Year of Indigenous Languages in 2019 showed how many languages are close to disappearing, the General Assembly set aside the ten years from 2022 to 2032 as the International Decade of Indigenous Languages, with UNESCO as the lead agency.
Read the full explanation →The year 2011 was observed as the International Year of:
- A.Biodiversity
- B.Forests
- C.Youth
- D.Cooperatives
Show answer
The year 2011 was the International Year of Forests, observed to show how forests support water, soil, climate and the livelihood of people who live in and around them; the same year was also the International Year of Chemistry.
Read the full explanation →The year 2025 was declared as the International Year of:
- A.Glaciers' Preservation
- B.Plant Health
- C.Artisanal Fisheries and Aquaculture
- D.Basic Sciences for Sustainable Development
Show answer
The General Assembly declared 2025 the International Year of Glaciers' Preservation, to draw attention to the melting of glaciers that feed rivers such as the Ganga, the Indus and the Brahmaputra and to the risk this carries for water supply and for floods.
Read the full explanation →The International Day of Yoga is observed every year on 21 June following a proposal by which country?
- A.Nepal
- B.India
- C.Sri Lanka
- D.Indonesia
Show answer
India proposed the observance at the United Nations, the General Assembly adopted the resolution in 2014 with the support of a very large number of member states, and the first International Day of Yoga was observed on 21 June 2015.
Read the full explanation →Frequently Asked Questions
Who declares an International Year?
The United Nations General Assembly declares it by adopting a resolution, usually on the proposal of one or more member states. A specialised agency such as the FAO, UNESCO or the WHO is then made the lead body that plans the activities of that year.
Which year was observed as the International Year of Millets?
The year 2023. India proposed it, more than seventy countries supported the proposal, the General Assembly adopted it in 2021 and the Food and Agriculture Organization led the observance. India promoted millets at home under the name Shree Anna.
What is the difference between an international day, year and decade?
An international day is observed on one fixed date every year, such as 21 June for yoga. An international year runs for one calendar year and carries a single theme. An international decade runs for ten years and sets a longer programme of action, such as the Decade on Ecosystem Restoration from 2021 to 2030.
Which decades of the United Nations run until 2030?
Four are asked in exams: the UN Decade on Ecosystem Restoration, the Decade of Ocean Science for Sustainable Development, the Decade of Healthy Ageing and the Second Decade of Action for Road Safety. All four cover the years 2021 to 2030.
Why was a year devoted to millets?
Millets such as jowar, bajra and ragi need far less water than rice or wheat, grow on poor soil, withstand heat, and are rich in fibre, iron and calcium. A year drew the attention of governments and consumers to a crop group that suits both a warming climate and the nutrition of dry regions.
Can one year carry more than one designation?
Yes. The General Assembly may declare two or three international years for the same calendar year, so 2022 was the International Year of Artisanal Fisheries and Aquaculture as well as of Glass and of Basic Sciences for Sustainable Development. Indian papers usually ask the one connected with farming or the environment.
Sources
- International Years, official list of observances — United Nations
- International Decades, official list of observances — United Nations
- International Year of Millets 2023, background and objectives — Food and Agriculture Organization of the United Nations





