The central question hinges on the classification of the date, specifically whether it functions as the noun "holiday." In New York, September 11 is not designated as an official public holiday. It is formally recognized as a day of solemn observance and remembrance, meaning government offices, schools, and private businesses do not close as they would for a legal holiday.
Nationally, the date is observed as Patriot Day and a National Day of Service and Remembrance. In New York City, this observance is marked by specific, solemn ceremonies rather than by civic closures. Key commemorative events include moments of silence corresponding to the times of the attacks, the annual reading of victims' names at the 9/11 Memorial & Museum, and the "Tribute in Light" installation. Per U.S. Public Law, the American flag is flown at half-staff at all government buildings and establishments on this day.
Therefore, the term "holiday," which typically implies a day of rest from work and civic activities, does not apply. Instead, the day is categorized as one of profound civic and personal commemoration. Its significance is acknowledged through acts of remembrance and memorialization while the regular functions of the city and state continue.
