Flags will be lowered to half-staff Thursday in recognition of National Pearl Harbor Remembrance Day. Flags should be at half-staff until sunset Thursday.

The day marks 76 years since more than 2,400 people died in a surprise attack on Pearl Harbor, Hawaii, by Japan. The attack prompted the United States to enter World War II.

Pearl Harbor Remembrance Day was established in 1994, however it is not a federal holiday.