When did Japan attack Hawaii?

Answer 1

1942. Only small parts of the Aleutian islands were occupied by the Japanese forces, when Attu and Kiska were invaded in order to divert American forces away from the main Japanese attack at Midway.

Answer 2

Never. In 1942 Japan invaded the Philippines, Guam, Wake Island, and two of the Aleutian Islands (Kiska and Attu) which were US possessions at the time. The invasions of the Aleutians were a diversion from the real invasion planned for Midway, but it was stopped. If not for the defeat at Midway, Japan might have been in a position to invade the continental US after invading the Hawaiian Islands and the rest of the Aleutian Islands first, but it never came to that.

Answer 3

The Japanese attack on Pearl Harbor Hawaii was on December 7, 1941.