National Pearl Harbor Remembrance Day, also referred to as Pearl Harbor Remembrance Day or Pearl Harbor Day, is observed annually in the United States on December 7, to remember and honor the 2,403 citizens of the United States who were killed in the Japanese surprise attack on Pearl Harbor in Hawaii on December 7, 1941.
On August 23, 1994, the United States Congress, by Pub.L. 103–308, designated December 7 of each year as National Pearl Harbor Remembrance Day. On Pearl Harbor Day, the American flag should be flown at half-staff until sunset to honor those who died as a result of the attack on U.S. Military and naval forces in Hawaii.
Pearl Harbor Day is not a federal holiday – government offices, schools, and businesses do not close. Some organizations may hold special events in memory of those killed or injured at Pearl Harbor.
On Sunday morning, December 7, 1941, the Imperial Japanese Navy Air Service attacked Naval Station Pearl Harbor in Honolulu, Hawaii, without warning and without a declaration of war, killing 2,403 American non-combatants, and injuring 1,178 others. The attack sank two U.S. Navy battleships and damaged five others. It also damaged three cruisers, three destroyers, and one minelayer. Aircraft losses were 188 destroyed and 159 damaged.