Attack on Pearl Harbor
Article Talk
"December 7, 1941" redirects here. For the date, see December 1941 § December 7, 1941 (Sunday).
The attack on Pearl Harbor[nb 3] was a surprise military strike by the Imperial Japanese Navy Air Service upon the United States against the U.S. Naval base at Pearl Harbor in Honolulu, Hawaii, just before 8:00 a.m. (local time) on Sunday, December 7, 1941. The United States was a neutral country at the time; the attack led the U.S. to formally enter World War II on the side of the Allies the following day. The Japanese military leadership referred to the attack as the Hawaii Operation and Operation AI,[nb 4] and as Operation Z during its planning.[12][13][14]