欧博International Mountain Day 2025
When Is International Mountain Day 2025?11Dec2025Thu, Dec 11, 2025 Add to calendar
Quick FactsThis year:Thu, Dec 11, 2025
Next year:Fri, Dec 11, 2026
Last year:Wed, Dec 11, 2024
Type:United Nations Observance
The year 2002 was the International Year of Mountains. As this year drew to a close, the United Nations (UN) General Assembly proclaimed December 11 to be International Mountain Day. This observance, which is celebrated annually, aims to draw attention to the important roles that mountainous regions play in water and food supply.
International Mountain Day commemorates the role in which mountains play in providing food, water, and recreation.
©iStockphoto.com/Joseph Jean
What Do People Do?Various activities are organized on and around International Mountain Day. These aim to increase awareness of and knowledge around the role of mountains and mountainous regions amongst the general population and professionals. Particular examples of events are: book fairs; symposia; themed lectures for students; workshops and press events. Mountaineering and explorations societies may hold lectures and social events on or around December 11.
Public LifeInternational Mountain Day is a global observance and not a public holiday.
BackgroundThe International Year of Mountains was held in 2002 and with the aim of raising awareness and triggering action on issues relating to sustainable mountain development. The leading agency was the Food and Agriculture Organization. The International Year of Mountains was launched at the headquarters of the United Nations in New York on December 11, 2001.
On December 20, 2002, as the International Year of Mountains drew to a close, the UN designated December 11 as International Mountain Day and encouraged the international community to organize events to highlight the importance of sustainable mountain development on this date. International Mountain Day was first observed on December 11, 2003. Each year International Mountain Day has a particular theme. Previous themes have focused on freshwater, peace, biodiversity or climate change.
SymbolsThe symbol of International Mountain Day consists of three equilateral triangles, each orientated with two points on a single imaginary horizontal line and one point directed upwards. The triangles are mainly black and represent mountains. The triangle on the left has a blue "diamond" shape at the top, representing ice or snow at the top of a mountain. The middle triangle has an orange circle at its center, representing resources that are mined from inside mountains. The triangle on the right has a small green triangle at its lower right-hand point.
This represents the crops that grow on mountains. Under the three triangles is a black stripe containing the words "11 December" and the words "International Mountain Day" in two shades of United Nations' use of the color blue. The symbol of International Mountain Day is based on the symbol for the International Year of Mountains (2002).
International Mountain Day Observances
YearWeekdayDateNameHoliday Type
2020Fri Dec 11 International Mountain Day United Nations Observance
2021Sat Dec 11 International Mountain Day United Nations Observance
2022Sun Dec 11 International Mountain Day United Nations Observance
2023Mon Dec 11 International Mountain Day United Nations Observance
2024Wed Dec 11 International Mountain Day United Nations Observance
2025Thu Dec 11 International Mountain Day United Nations Observance
2026Fri Dec 11 International Mountain Day United Nations Observance
2027Sat Dec 11 International Mountain Day United Nations Observance
2028Mon Dec 11 International Mountain Day United Nations Observance
2029Tue Dec 11 International Mountain Day United Nations Observance
2030Wed Dec 11 International Mountain Day United Nations Observance
While we diligently research and update our holiday dates, some of the information in the table above may be preliminary. If you find an error, please let us know.
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Arabicيوما دوليا للجبال
GermanWelttag der Berge
Hebrewיום ההר הבינלאומי
Korean국제 산의 날
NorwegianDen internasjonale dagen for fjell
SpanishDía Internacional de las Montañas
Fun Holiday on December 11, 2025
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