The US has a National Day of Service and Remembrance on September 11 every year. This day is the anniversary of the 9/11 terrorist attacks, which

killed a lot of people. In the US, this day is also called Patriot Day. On this day in 2001, over 25,000 people were hurt and 2,977 people died. 

President George W. Bush made September 14, 2001, a National Day of Prayer and Remembrance for the Victims of the Terrorist Attacks on

September 11, 2001, right after the attacks on September 11. The name "Patriot Day" came from the name of the law that led to the declaration.

After President Barack Obama took office, he changed the order and made September 11 Patriot Day and a National Day of Service and

Remembrance. In 2017, President Donald Trump made September 8–10 National Days of Prayer and Remembrance and September 11 Patriot Day. 

Also, read about the history of Indonesia's Independence Day, what it means, and how it is celebrated. It is significant that 

the terrorist attacks on September 11 were the deadliest in history. They caused the twin towers of the World Trade Center in New York City, the

financial capital of the United States, to fall. Not only did the attacks change the way the world works because the US used Article 5 of the NATO

treaty for the first time, but they also started the global war on terror. 
The attack was also the deadliest one for police officers and firefighters in the US.