This is our day guide for Thursday December 11th 2025 which shows you at a glance what's happening on this day around the world. Using the calendar on this page, you can look at a day guide for any day. Why not look up your birthday to see which holidays you share it with?
Observances on December 11th 2025
International Mountain Day
Mountains are home of the 15% of the world´s population and a quarter of the world’s land animals and plants.
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UNICEF Birthday
UNICEF works in over 190 countries and territories to save children's lives, to defend their rights, and to help them fulfil their potential, from early childhood through adolescence.
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Public Holidays on December 11th 2025
Proclamation of the Republic
Upper Volta became an independent republic within the French Community on December 11th 1958
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