The designation of September 11 as a day of national observance occurred on December 18, 2001, when President George W. Bush signed Public Law 107-89. This joint resolution of Congress established September 11 of each year as Patriot Day. It is officially a national day of remembrance to commemorate the individuals who lost their lives in the terrorist attacks of September 11, 2001.
The resolution calls for the flag of the United States to be flown at half-staff at all U.S. government buildings and establishments, both domestically and abroad, on this day. It also requests that the American people observe a moment of silence to honor the victims. In 2009, this observance was further amended by the Edward M. Kennedy Serve America Act (Public Law 111-13), which designated September 11 as a National Day of Service and Remembrance, encouraging Americans to participate in community service and charitable activities as a tribute.
It is important to note that Patriot Day is a national observance, not a federal holiday. Consequently, government offices, schools, and private businesses are not required to close. Its purpose is to serve as a solemn annual commemoration, providing a formal occasion for the nation to reflect on the events of 9/11, remember the victims, and honor the first responders and heroes of that day.