World Humanitarian Day

United Nations observance

The United Nations’(UN) World Humanitarian Day focuses on increasing public awareness about humanitarian service worldwide and is annually observed on August 19.

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National Aviation Day

Observance

National Aviation Day is observed in the United States on August 19 each year to celebrate the history and development of the aviation.

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International Day of Remembrance and Tribute to the Victims of Terrorism

8/21/2026

United Nations observance

International Day of Remembrance and Tribute to the Victims of Terrorism is a United Nations observance in the USA

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Hawaii Statehood Day

8/21/2026

State Holiday

Hawaii’s Statehood Day is celebrated on the third Friday of August to commemorate the anniversary of Hawaii’s statehood.

HI

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International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief

8/22/2026

United Nations observance

International Day Commemorating the Victims of Acts of Violence Based on Religion or Belief is a United Nations observance in the USA

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International Day for the Remembrance of the Slave Trade and its Abolition

8/23/2026

United Nations observance

The United Nations’ (UN) International Day for the Remembrance of the Slave Trade and its Abolition is held on August 23 each year to remind people of the tragedy of the transatlantic slave trade.

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The Prophet's Birthday

8/26/2026

Muslim

Eid Milad ul-Nabi (Mawlid or Milad-un-Nabi) commemorates the Prophet Muhammed's birthday.

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