To mark the anniversary of the bombing of the World Trade Center and the Pentagon in 2001, President Bush proclaimed September 11 as Patriot Day.
On this day, the proclamation asks that flags be flown at half-mast and that the day be marked by ceremonies, candlelight vigils, and other remembrance services. It is recognized annually as a National Day of Service and Remembrance.
We shall never forget. We shall keep this day.
We shall keep the events and the tears in our minds,
our memory and our hearts and take them with us as we carry on.
Source: 9/11 Memorial Web site