Pearl Harbor

January, 1941

Jan 9, 1941

Yamamoto starts to talk to Japan officers about a possible attack on Pearl Harbor.

January 27, 1941

Jan 27, 1941

People in Washington did not believe this information they thought it was just a threat.

Febuary 1941

Feb 9, 1941

Hawaii got proper defense equipment from the Naval Military base.

April 1941

Apr 9, 1941

The U.S. used a code called magic. To moniter Japan's secret messages.

July 1941

Jul 9, 1941

Japan commanders planned and finalized the attack on Pearl Harbor.

September 24, 1941

Sep 24, 1941

Japan commanders planned the bomb plot of exact locations on ships.

November 16, 1941

Nov 16, 1941

Submarines were first involved in the attack.

November 27, 1941

Nov 27, 1941

U.S leaders called war warning indicating an attack.

Night of December 6, and Morning of December 7, 1941

Dec 6, 1941

Sensed some Japanese action.

Same date as before event

Dec 7, 1941

Message forwarded 4 hours before the attack but U.S. leaders did not get it till the first attack.