August 11 Holidays

Number of holidays
12
Day of the year
223
Days left in the year
142

Mountain Day is a Japanese national public holiday established in 2016 to honor mountains and encourage people to engage with Japan’s dramatic alpine landscapes — falling on August 11 because the kanji for “mountain” (山) resembles three peaks. Hip Hop Day marks August 11, 1973, when DJ Kool Herc threw a back-to-school party at 1520 Sedgwick Avenue in the South Bronx — the evening that is widely credited as the birth of hip hop, now the world’s most commercially dominant music genre. Death of Prophet Muhammad marks the 12th of Rabi’ al-Awwal in the Islamic calendar, the date traditional sources record the Prophet Muhammad’s death — observed with prayer and reflection in Muslim communities. Chad Independence Day marks August 11, 1960, when Chad gained independence from France after six decades of colonial rule. Three peaks, a Bronx block party, a date of mourning, and a Sub-Saharan flag.

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All Holidays On August 11

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Special Interest

Mountain Day

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Hip Hop Day

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Ingersoll Day

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National Fufu Day
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Food & Beverage

National Fufu Day

National Raspberry Bombe Day
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Aug11
Special Interest

Presidential Joke Day

What is the most popular holiday on August 11?

On August 11, Hip Hop Day is the most globally recognized pop culture observance, marking the August 11, 1973 birth of the genre at 1520 Sedgwick Avenue. Mountain Day is a Japanese national public holiday, and Death of Prophet Muhammad is the most globally significant religious observance, marked by Muslim communities worldwide.

What countries celebrate holidays on August 11?

August 11 observances span Japan (Mountain Day), Chad (Chad Independence Day), Muslim communities worldwide (Death of Prophet Muhammad), and the U.S., which hosts Hip Hop Day, Ingersoll Day, and International Allyship Day.

What awareness days are on August 11?

August 11 includes International Allyship Day, celebrating intentional relationship-building across differences and active support for marginalized groups, and International Day of Remembrance and Tribute to the Victims of Terrorism, honoring those killed or wounded in terrorist attacks worldwide.