International Mountain Day
Celebrating mountains, which cover 27% of the Earth and supply most of its freshwater.
1 min read · Fact-checked · Updated for 2026
About International Mountain Day
International Mountain Day has been observed on December 11th since 2003, designated by the UN. Mountains cover about 27% of the Earth's land surface, are home to 15% of the world's population, and provide 60–80% of the planet's freshwater. The day highlights mountain ecosystems' vulnerability to climate change and their importance for biodiversity and tourism.
Read more on WikipediaWhen is International Mountain Day?
International Mountain Day is celebrated every year on December 11. Upcoming dates:
| Year | Date | Day of week | |
|---|---|---|---|
| International Mountain Day 2026 | December 11, 2026 | Friday | View date → |
| International Mountain Day 2027 | December 11, 2027 | Saturday🎉 weekend | View date → |
| International Mountain Day 2028 | December 11, 2028 | Monday | View date → |
| International Mountain Day 2029 | December 11, 2029 | Tuesday | View date → |
| International Mountain Day 2030 | December 11, 2030 | Wednesday | View date → |
How to Celebrate International Mountain Day
- 🎯Learn one new fact about the cause behind International Mountain Day and share it.
- 💡Donate to or volunteer with an organization working on this issue year-round.
- 📣Post with #InternationalMountainDay to help the message travel further.
Official hashtag: #InternationalMountainDay
Frequently Asked Questions
When is International Mountain Day 2026?
International Mountain Day 2026 is on Friday, December 11, 2026.
How many days until International Mountain Day?
There are 151 days until International Mountain Day (December 11, 2026).
What category is International Mountain Day?
International Mountain Day is categorized as a Awareness event.
Is International Mountain Day a public holiday?
International Mountain Day is an observance day, not typically a public holiday. Check your country's official calendar for local public holidays.
More Awareness Days
World Braille Day
January 4
Marking the birthday of Louis Braille, this day raises awareness of the importance of Braille as a communication tool for blind and visually impaired people.
World Introvert Day
January 2
A day to appreciate introverts and their need for quiet recharge after the busy holiday season.
National Hugging Day
January 21
A day encouraging people to hug family and friends — founded in 1986 to help people show emotions in public.
World Radio Day
February 13
UNESCO's celebration of radio as a powerful medium for information, entertainment and emergency communication.