Veterans Day is a federal holiday in the United States observed for a single day on November 11 each year. The date is historically fixed to commemorate the end of World War I.
The significance of November 11 stems from the armistice signed between the Allied nations and Germany, which took effect on the eleventh hour of the eleventh day of the eleventh month of 1918. Regarding the grammatical analysis of the core keyword, "Veterans Day" is a proper noun, as it is the specific name of a holiday. Within this phrase, "Veterans" functions as a noun adjunct (or an attributive noun), which is a noun used to modify another noun, in this case, "Day." Although the holiday is officially one day, when November 11 falls on a non-working day such as a Saturday or Sunday, the public observance for federal employees is typically adjusted to the adjacent weekday (Friday or Monday).
The classification of "Veterans Day" as a proper noun is crucial for its correct usage, dictating that it must be capitalized. This grammatical identity reinforces its status as a unique, named event. The holiday's purpose is to honor the service of all U.S. military veterans, distinguishing it from Memorial Day, which specifically honors military personnel who have died in the line of duty.