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?
Holidays on August 21st 2025
Not a Public Holiday
Czech Republic: 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.
Morocco: Youth Day
Youth Day is celebrated on the birthday of the reigning monarch, Mohammed VI
Philippines: Ninoy Aquino Day
The holiday commemorates the assassination of former Senator Benigno 'Ninoy' Aquino, Jr. on August 21st 1983Observances on August 21st 2025
United Nations: 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
USA: National Brazilian Blowout Day
Find out the dates, history and traditions of National Brazilian Blowout Day
USA: National Senior Citizen’s Day
Just like Senior Citizens, this holiday never gets old - at heart!
USA: National Spumoni Day
Find out the dates, history and traditions of National Spumoni Day
International: World Entrepreneurs' Day
Today is World Entrepreneurs' Day, a day in which we acknowledge and celebrate those courageous enough to blaze their own trail.
Czech Republic: 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.August 20th 2025 | Go to Today | August 22nd 2025
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| General Information for August 21st 2025 | |
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| There are 3 public holidays today. | |
| Day 233 of 2025 | |
| 132 days left in 2025 | |
| Week 34 of the year | |
| On this Day in History | |
| 2012 - Erden Eruç completes the first solo human-powered circumnavigation of the world. | |
| 1986 - Carbon dioxide gas erupts from volcanic Lake Nyos in Cameroon, killing up to 1,800 people within a 20-kilometer range. | |
| 1954 - First Indochina War: The Geneva Conference partitions Vietnam into North Vietnam and South Vietnam. | |
| 1949 - The United States Senate ratifies the North Atlantic Treaty. |
Office Holidays provides calendars with dates and information on public holidays and bank holidays in key countries around the world.
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