This is our day guide for Thursday August 21st 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 August 21st 2025

Day of Memory

Day of Memory

A state holiday that commemorates those who lost their lives during the occupation of Czechoslovakia by Warsaw Pact troops that began in August 1968.

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World Entrepreneurs' Day

World Entrepreneurs' Day

Today is World Entrepreneurs' Day, a day in which we acknowledge and celebrate those courageous enough to blaze their own trail.

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National Brazilian Blowout Day

National Brazilian Blowout Day

Find out the dates, history and traditions of National Brazilian Blowout Day

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National Senior Citizen’s Day

National Senior Citizen’s Day

Just like Senior Citizens, this holiday never gets old - at heart!

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National Spumoni Day

National Spumoni Day

Find out the dates, history and traditions of National Spumoni Day

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International Day of Remembrance and Tribute to the Victims of Terrorism

International Day of Remembrance and Tribute to the Victims of Terrorism

Find out the dates, history and traditions of International Day of Remembrance and Tribute to the Victims of Terrorism

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Public Holidays on August 21st 2025

Morocco Youth Day

Morocco Youth Day

Youth Day is celebrated on the birthday of the reigning monarch, Mohammed VI

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Ninoy Aquino Day

Ninoy Aquino Day

The holiday commemorates the assassination of former Senator Benigno 'Ninoy' Aquino, Jr. on August 21st 1983

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