1941
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December 7, 1941 – ◆World War II: Attack on Pearl Harbor – The Imperial Japanese Navy attacks the US Pacific Fleet and its defending Army Air Forces and Marine air forces at Pearl Harbor, Hawaii (US time).
⇒Timeline Detail
Not only the date but also the year of the attack was a pun. The puns were made from the combination of the two dates of the Mongol invasions of Japan.
■ October 20, 1274 (Koki 1934) in the Japanese calendar - Battle of Bun'ei. Kublai Khan's Yuan Dynasty attempts the first of several invasions of Japan (The number of the Koki year is 660 years more than that of the Gregorian year).
■ July 30, 1281 (Koki 1941) in the Japanese calendar - Battle of Koan. The second Mongol invasion of Japan is foiled, as a large typhoon – famously called a kamikaze, or divine wind – destroys much of the combined Chinese and Korean fleet and forces, numbering over 140,000 men and 4,000 ships.
The Japanese government took the year 1941 from the Battle of Koan and the date October 20 from the Battle of Bun'ei, respectively. Then the Japanese government determined the date of the Pearl Harbor attack to be October 20, 1941 in the Japanese calendar. The day was December 8, 1941 (Japan time) or December 7, 1941 (US time).
Koki
1941 (1281)
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July 30, 1281 - ★Battle of Koan. The second Mongol invasion of Japan is foiled, as a large typhoon – famously called a kamikaze, or divine wind – destroys much of the combined Chinese and Korean fleet and forces, numbering over 140,000 men and 4,000 ships.
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