International Mountain Day Dec. 11, 2023

International Mountain Day

Peek at your calendars! December 11 is International Mountain Day, a special day designated by the United Nations General Assembly back in 2003. The theme for this year"s commemoration is "Restoring mountain ecosystems," connecting with the UN"s Decade on Ecosystem Restoration.

© Hung Chung Chih/Shutterstock

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Today in History

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Dec. 11, 2024International Mountain Day
Dec. 11, 2025International Mountain Day

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Nov. 22, 2023Grand Teton National Park, Wyoming
When just a pinch of salt won’t do
Is it green with envy?
Park of the Monsters
Jan. 15, 2024Northern Lights
Jan. 5, 2025Plum-headed parakeet
Her legend and mystery endure
Sep. 10, 2024Vasco da Gama Bridge, Lisbon, Portugal
Apr. 18, 2024International Day for Monuments and Sites
Sep. 10, 2023Grandparents Day
May 24, 2024Ordesa y Monte Perdido National Park
Jul. 15, 2025Perseid meteor shower over Nevada
Oct. 26, 2023Schönbrunn Palace Park, Vienna, Austria
Nov. 2, 2024American bison
Stairway to heaven?
Golden cliffs of deep space
An ocean of stars above the desert
Mar. 23, 2025World Meteorological Day
Dec. 4, 2024Wildlife Conservation Day
May 12, 2024Mothers Day
The world’s greatest oasis?
Jan. 5, 2024International Ice and Snow Sculpture Festival, Harbin, China
Apr. 4, 2024Red lechwe, Okavango Delta, Botswana
Nov. 21, 2025World Hello Day
Happy Canada Day!
Oct. 6, 2025Anshun Bridge, Chengdu, China
Jun. 14, 2024Peggys Point Lighthouse
Nov. 5, 2023Playa del Silencio, Spain
Happy New Year’s from down under
Dec. 2, 2025Whistler, British Columbia