The United States is marking the 25th anniversary of the September 11, 2001 attacks with remembrance ceremonies at the World Trade Center site in New York, the Pentagon and the Flight 93 National Memorial in Pennsylvania. The observances centre on the names of those killed, moments of silence tied to the sequence of the attacks and tributes to responders whose health was damaged in the years that followed.
Nearly 3,000 people were killed when hijacked aircraft struck the World Trade Center and Pentagon and another plane crashed near Shanksville. A quarter-century later, the anniversary is both a memorial for families and a moment to examine how the attacks changed security, foreign policy, public health and a generation that knows 9/11 primarily as history.
What is happening on the 9/11 anniversary?
At the National September 11 Memorial in Lower Manhattan, family members participate in the annual reading of victims' names. Moments of silence mark the impacts of the planes, the collapses of the Twin Towers and the attack on the Pentagon and Flight 93.
The 2026 ceremony adds particular weight because it marks 25 years. According to Associated Press coverage, commemorations are also recognising people who died from illnesses connected to exposure at and around the World Trade Center site.
Events are being held at the Pentagon Memorial and in Shanksville, where passengers and crew fought back aboard United Flight 93. Smaller services, volunteer projects and school programmes are taking place across the country under the National Day of Service and Remembrance.
Tribute in Light broadcast details
The Tribute in Light returns above Lower Manhattan after sunset, creating two vertical beams that echo the position of the original towers. The National September 11 Memorial & Museum says a special broadcast begins at 8 p.m. Eastern Time on September 11.
The programme is scheduled to be available through ABC, Disney+, Hulu, National Geographic, ABC-owned station livestreams and ABC News Live. Availability can vary by country and subscription, so international viewers should check the service listing in their region rather than assuming every platform carries the stream globally.
The installation is one of the anniversary's most recognisable visual symbols, but its purpose remains memorial rather than spectacle. The beams are visible across the New York area and provide a shared tribute for people unable to attend the family ceremony.
Why there are multiple moments of silence
The timing of the observance follows the chronology of September 11. The first moments recognise when American Airlines Flight 11 struck the North Tower and United Airlines Flight 175 struck the South Tower. Later silences mark the Pentagon attack, the collapse of each tower and the crash of Flight 93.
This structure helps the ceremony preserve individual events within a day often remembered as one collective image. It also gives families connected to different locations a defined place in the national remembrance.
The addition of recognition for post-9/11 illness reflects the expanding health toll. Firefighters, police officers, construction workers, volunteers, office workers and residents were exposed to hazardous dust and smoke. Cancer, respiratory disease and other conditions have continued to affect survivors and responders long after the immediate recovery operation ended.
How 9/11 changed the United States and the world
The attacks led to the U.S.-led war in Afghanistan, shaped the invasion of Iraq and transformed intelligence and counterterrorism policy. The Department of Homeland Security was created, airport security changed, surveillance powers expanded and governments around the world adjusted how they assessed terrorist threats.
The consequences were also social. Muslim, Arab, Sikh and South Asian communities experienced discrimination and hate crimes. Public debate about national security increasingly involved difficult questions about privacy, civil liberties and the limits of state power.
For people born after 2001, those systems can feel normal because they never experienced the period before them. The 25th anniversary therefore functions as an education challenge: explaining not just what happened, but how decisions made afterward continue to influence travel, policing, war and political language.
Remembering responders and survivors
The phrase “first responders” includes the firefighters, police officers and emergency medical teams who entered dangerous areas while others escaped. It also extends to people involved in rescue, recovery and cleanup over subsequent months.
Many survivors and relatives have spent years seeking healthcare, compensation and recognition for illnesses linked to exposure. Memorial coverage that ends with the number killed on the day misses this longer history.
The anniversary also belongs to people who lived or worked in Lower Manhattan, Pentagon staff, military families, Flight 93 relatives and communities that lost residents. Their experiences differ, which is why ceremonies across the three attack sites remain necessary.
How to observe respectfully
People can watch the official ceremonies, visit a memorial, participate in a service project or learn the story of one victim. Teachers and parents can use age-appropriate resources from the 9/11 Memorial & Museum rather than exposing children only to graphic footage.
Social-media users should avoid sharing misidentified images, conspiracy claims or footage without context. The anniversary predictably generates misleading posts, and emotionally powerful material is especially likely to travel before it is verified.
Twenty-five years is long enough for memory to become history for millions of people, but not long enough for the consequences to disappear. The central purpose of September 11, 2026 remains simple: remember the victims, honour the people who responded and understand the choices that followed.
