Constitution Day and Citizenship Day, observed on the previous Friday if it falls on a Saturday, the following Monday if on a Sunday; and the beginning of theConstitution Week(United States)
An annual observance commemorating the signing of the U.S. Constitution and celebrating American citizenship.
Constitution Day and Citizenship Day is observed on September 17 to honor the signing of the U.S. Constitution in 1787.
When the date falls on a weekend, the observance shifts to the closest weekday, ensuring schools and institutions can participate.
The week around this date is also designated as Constitution Week, promoting awareness of the Constitution's history and principles.
Educational programs in schools across the United States focus on civics, encouraging students to explore their rights and responsibilities.
Naturalization ceremonies often take place, welcoming new citizens and celebrating the ongoing story of American democracy.
This observance underscores the enduring legacy of the Constitution as the foundation of U.S. governance and citizenship.
Constitution Day and Citizenship Day
Constitution Week
Heroes' Day (Angola)
A national holiday in Angola honoring those who fought for the nation’s independence.
Heroes' Day is observed in Angola on September 17 each year.
The holiday honors the bravery and sacrifice of Angolan freedom fighters who led the struggle against Portuguese colonial rule.
The date coincides with the birthday of Agostinho Neto, Angola's first President and a prominent independence leader.
Nationwide ceremonies feature wreath-laying at memorials, parades, and cultural events celebrating Angolan heritage.
Heroes' Day reminds citizens of the resilience and unity that secured the nation's sovereignty.
Heroes' Day (Angola)
Marathwada Liberation Day(Maharashtra)
A regional observance marking the liberation of Marathwada from Nizam rule.
Marathwada Liberation Day is observed on September 17 in Maharashtra, India.
It commemorates the region's liberation from the rule of the Nizam of Hyderabad in 1948 following India's independence.
The day marks the successful integration of Marathwada into the Indian Union, ending princely state governance.
Government offices, educational institutions, and cultural organizations host events showcasing Marathwada's rich heritage.
Festivities include flag hoisting, patriotic programs, and reflections on the sacrifices of freedom fighters.
Marathwada Liberation Day
Maharashtra
National Unity Day (Belarus)(since 2021)
A Belarusian public holiday celebrating the country's reunification in 1939.
National Unity Day in Belarus is celebrated annually on September 17.
The holiday marks the 1939 unification of West Belarus with the Belarusian Soviet Socialist Republic.
It symbolizes national solidarity and the historic ties between different Belarusian regions.
Official ceremonies include speeches by government officials, performances highlighting Belarusian culture, and mass gatherings in Minsk.
While recognized officially since 2021, it has sparked discussions on historical memory and contemporary identity.
National Unity Day (Belarus)
Operation Market Garden Anniversaryis still remembered with parachuting and dedications on this day. (Netherlands)
The anniversary of the largest airborne operation of World War II, remembered with ceremonies and commemorations in the Netherlands.
Operation Market Garden was a major Allied airborne operation during World War II that began on September 17, 1944.
Its ambitious goal was to secure key bridges in the Netherlands and pave the way into Germany.
Though ultimately unsuccessful in its final objectives, the operation showcased remarkable courage and sacrifice.
Every year, the Netherlands honors the paratroopers and soldiers who took part, with memorial services and commemorative jumps.
Local events include exhibitions, guided battlefield tours, and community gatherings remembering the war's impact.
Operation Market Garden Anniversary