On September 11, American flags will be flown at half-staff across the United States as the nation marks the 25th anniversary of the terrorist attacks that claimed 2,977 lives and significantly impacted the country. The day will be filled with memorial ceremonies and events to honor those affected.
Federal agencies, state governments, organizations, and private citizens are encouraged to participate in Patriot Day observances. The anniversary coincides with ongoing legal proceedings related to the attacks. Recently, a military judge scheduled a June 5, 2028, trial for Khalid Sheikh Mohammed, who is accused of masterminding the attacks, and three co-defendants at Guantánamo Bay, after a plea agreement failed.
Key Points
- September 11 marks the 25th anniversary of the attacks.
- U.S. flags will be flown at half-staff to observe Patriot Day.
- Americans are encouraged to observe moments of silence and participate in events.
- A seventh moment of silence has been added to honor those who later died from related illnesses.
Why It Matters
September 11 remains a solemn date. In late 2001, Congress designated it as Patriot Day to honor victims and responders to the attacks in New York, Pennsylvania, and Washington, D.C. Annual observances involve flying flags at half-staff. The 2026 commemoration holds particular significance as it marks 25 years since the attacks, arriving at a time when many young Americans have no firsthand memory of the day.
Ceremonies focus on remembering victims, recognizing survivors, and honoring responders and military personnel involved in the aftermath.
Half-Staff Flag Protocol
Guidance for Patriot Day states the American flag is traditionally flown at half-staff from sunrise to sunset. It is raised to the peak briefly before being lowered to half-staff, then returned to the peak before lowering it at day’s end.
Memorial Ceremonies and Moments of Silence
This year’s observances emphasize remembrance. The National September 11 Memorial & Museum in New York will hold a ceremony starting at 8:30 a.m. Family members will read names of the victims.
Seven moments of silence will mark the anniversary, including six reflecting key events from September 11, 2001:
- 8:46 a.m.—Flight 11 struck the North Tower
- 9:03 a.m.—Flight 175 struck the South Tower
- 9:37 a.m.—Flight 77 struck the Pentagon
- 9:59 a.m.—Fall of the South Tower
- 10:03 a.m.—Flight 93 crashed near Shanksville, Pennsylvania
- 10:28 a.m.—Fall of the North Tower
The seventh silence will honor those who died from related illnesses, becoming a permanent part of the ceremony.
Marking the 25th Anniversary Across America
Beyond official ceremonies, the anniversary features exhibitions and educational programs. The “Our Flag Was Still There” installation at the National September 11 Memorial & Museum showcases flags from Ground Zero and the Pentagon, exploring the flag as a symbol of resilience during grief.
Patriot Day is observed as a National Day of Service and Remembrance, inspiring Americans to pay tribute through volunteer work and community engagement. Local governments, veterans’ groups, and civic organizations across the nation will conduct memorial programs throughout the anniversary.

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