February 2: The Senjuro Hayashi Cabinet is established.
June 4: The first Fumimaro Konoe Cabinet is established.
July 7 Marco Polo Bridge Incident (start of the Sino-Japanese War)
July 27: The Japanese government announces it intends to take self-defense actions in light of the “North China Incident” and issues orders to send three divisions from Japan to North China.
August 13: Japanese and Chinese forces begin fighting in Shanghai.
August 24: The National Spiritual Mobilization Implementation Plan is set out at a Cabinet meeting.
September 25: The Cabinet Intelligence Department government organization is promulgated.
January 11: The Ministry of Health and Welfare government organization is promulgated.
January 16: The first Konoe Statement is released.
February 16: The first issue of Shashin Shuho is published.
March 13: Germany annexes Austria.
April 1: The National Mobilization Law is promulgated.
 May 19: Japanese forces occupy Xuzhou.
August 16: Hitler Youth (Hitlerjugend) delegation visits Japan.
October 27: Japanese forces occupy the three Wuhan cities.
January 5: The Kiichiro Hiranuma Cabinet is established.
May 12: Fighting breaks out between the Manchurian and Outer Mongolian forces on the border between Manchuria and Mongolia (start of the Nomonhan Incident).
June 14: Japanese forces cut off British and French settlements in Tianjin.
August 23: Germany and the U.S.S.R. conclude the German-Soviet Nonaggression Pact.
August 30: The Nobuyuki Abe Cabinet is established.
September 1: Germany invades Poland (start of World War II).
September 15: Japan and the U.S.S.R. conclude the Nomonhan Incident Local Cease-fire Agreement.
January 16: The Mitsumasa Yonai Cabinet is established.
January 21: A British warship searches the Asama Maru off the coast of Chiba and takes in German passengers for questioning.
March 30: The Wang Jingwei Administration is established in Nanking.
June 10: Italy declares war on Britain and France.
June 14: German forces triumphantly enter into Paris.
July 22: The second Fumimaro Konoe Cabinet is established.
September 7: German forces begin bombing of London (London Blitz).
September 23: Japanese forces are stationed in northern French Indochina.
September 27: Japan, Germany, and Italy conclude the Tripartite Alliance.
October 12: The Imperial Rule Assistance Association is organized.
November 10: Japan celebrates its 2600th anniversary.
December 6: The Intelligence Bureau government organization is promulgated.
March 11: Japan helps to mediate dispute between Thailand and French Indochina.
April 13: Japan and the U.S.S.R. conclude the Soviet-Japanese Neutrality Pact.
April 22: Foreign Minister Yosuke Matsuoka returns home from diplomatic mission to the U.S.S.R., Germany, and Italy.
June 22: Germany begins invasion of the U.S.S.R.
July 18: The third Konoe Cabinet is established.
 July 28: Japanese forces advance into southern French Indochina.
August 14: U.S. President Franklin D. Roosevelt and British Prime Minister Winston Churchill announce the Atlantic Charter.
October 18: The Hideki Tojo Cabinet is established.
December 8: Japanese forces land on the Malay Peninsula and launch an attack on Pearl Harbor in Hawaii (start of the Pacific War)
December 10: Japanese naval forces sink the British battleships Prince of Wales and Repulse
 January 2: Japanese forces occupy Manila.
February 15: British forces surrender to Japanese forces in Singapore.
March 8: Japanese forces occupy Rangoon.
March 9: The Dutch East Indies Army surrenders to Japanese forces in Java.
May 7: Battle of the Coral Sea.
June 5: Battle of Midway.
 June 8: Japanese forces land on Kiska Island and Attu Island.
Augsut 8: Battle of Savo Island.
April 18: Isoroku Yamamoto, Commander-in-Chief of the Combined Fleet of Japan, is killed in battle off the coast of the Solomon Islands
May 29: Gyokusai (phrase for “honorable death” used by the Imperial General Headquarters ) of Japanese forces on Attu Island.
May 31: The Outline of Guidance on the Greater East Asian Political Ring (incorporation of Malay and Dutch Indochina into Japan and plan for Burmese and Philippine independence) is formulated.
August 1: The Ba Maw Administration declares independence in Japanese-occupied Burma.
September 8: Italy declares its unconditional surrender to the Allied Powers.
October 14: The Republic of the Philippines declares independence.
November 6: The Greater East Asia Joint Declaration is adopted.
December 1: U.S. President Franklin D. Roosevelt, British Prime Minister Winston Churchill, and Chinese President Chiang Kai-Shek issue the Cairo Declaration.
 March 8: Battle of Imphal stats.
June 6: Allied forces land at Normandy.
June 19: Battle of the Philippine Sea.
July 4: The Imperial General Headquarters decides to end the Battle of Imphal.
July 7: Gyokusai of the Japanese forces defending the island of Saipan.
July 22: The Kuniaki Koiso Cabinet is established.
October 24: Battle of Leyte Gulf.
February 4: U.S. President Franklin D. Roosevelt, British Prime Minister Winston Churchill, and Soviet Premier Joseph Stalin meet at the Yalta Conference.
March 9: Firebombing raids on Tokyo
March 17: Japanese forces defending the island of Iwo Jima are completely destroyed.
April 1: U.S. forces landed on the main island of Okinawa.
April 7: The Kantaro Suzuki Cabinet is established.
May 7: Germany declares its unconditional surrender to the Allied Powers.
July 26: The Potsdam Declaration is announced.
August 6: Atomic bombing of Hiroshima.
August 8: U.S.S.R. declares war on Japan.
August 9: Atomic bombing of Nagasaki.
August 14: Japan decides to accept the Potsdam Declaration and issues its acceptance to the Allied Powers through a neutral country.
August 15: Imperial edict announcing the conclusion of war is broadcast.
September 2: Japan signs formal surrender in the presence of Allied Powers on the USS Missouri.

Japan Center for Asian Historical Records, National Archives of Japan