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January, 1941
Yamamoto starts to talk to Japan officers about a possible attack on Pearl Harbor. -
January 27, 1941
People in Washington did not believe this information they thought it was just a threat. -
Febuary 1941
Hawaii got proper defense equipment from the Naval Military base. -
April 1941
The U.S. used a code called magic. To moniter Japan's secret messages. -
July 1941
Japan commanders planned and finalized the attack on Pearl Harbor. -
September 24, 1941
Japan commanders planned the bomb plot of exact locations on ships. -
November 16, 1941
Submarines were first involved in the attack. -
November 27, 1941
U.S leaders called war warning indicating an attack. -
Night of December 6, and Morning of December 7, 1941
Sensed some Japanese action. -
Same date as before event
Message forwarded 4 hours before the attack but U.S. leaders did not get it till the first attack.