- Every year on September 11, Patriot Day is celebrated.
- The National Day of Service and Remembrance is another name for it.
- The day is dedicated to the victims of the 9/11 terrorist attack.

While the September 11 terrorist attacks were the deadliest in history, it resulted in the two twin towers of the World Trade Centre collapsing at the heart of America’s financial capital, New York.
Every year on September 11, Patriot Day—also known as the National Day of Service and Remembrance—is observed to remember and honour the victims of the terrorist attack on the World Trade Center on September 11, 2001. It should be noted that on this day in 2001, there were over 2,977 fatalities and over 25,000 injuries. The first Patriot Day was observed on September 11, 2002, even though a bill to designate September 11 as a day of national mourning was introduced soon after the bombing. We will discuss the origins, significance, and other specifics of Patriot Day in this article.
History
Former US President George W. Bush proclaimed Friday, September 14, 2001, as a National Day of Prayer and Remembrance to honour the victims of the terrorist attacks on September 11, 2001, in the immediate wake of the September 11 attacks. It should be noted that the name of the legislation that inspired the declaration is how the day got its name, Patriot Day. President Barack Obama changed the directive after taking office, designating September 11 as a national day of service and remembrance.
Chronology of the World Trade Center collapse

8:46 AM: American Airlines Flight hits the World Trade Center in an accident.
9:03 AM: A United Airlines flight crashes into the South Tower of the World Trade Center.
9:37 AM: A flight from American Airlines struck the Pentagon.
9:59 AM: South Tower of the World Trade Center collapsed.
10:03 AM: In Shanksville, a United Airlines flight crashes (Township in Pennsylvania)
10:28 AM: World Trade Center North Tower collapsed.
Historic Significance
The two twin towers of the World Trade Center collapsed in the middle of New York City, the centre of America’s financial capital, as a result of the September 11 terrorist attacks, which were the deadliest in history. Invoking Article 5 of the NATO treaty for the first time, the US changed the world order as a result of the attacks, which also marked the beginning of the global war on terror. At 8.46 am on September 11, US government buildings all over the world will lower the US flag to half-mast as a mark of respect for the victims.