In Tokyo... An Imperial Conference (a meeting of Japanese government and military leaders and the Emperor to explain policy to the Emperor and nominally to take important decisions -- in practice these are already taken at the Liaison Conferences between the politicians and the military leaders) records the decision that attempts should be made to take bases in Indochina even at the risk of war. 

In the United States... The US authorities very soon know of this determination through their code-breaking service which has managed to work out the key to the major Japanese diplomatic code and some other minor operational codes. The information gained from the diplomatic code is circulated under the code name Magic.

On the Eastern Front... After a rapid concentration and regrouping Hoeppner's Panzer Group 4 attacks with renewed vigor toward Ostrov. In the south, the forces of German Army Group South, based in Romania and including the Romanian 3rd and 4th Armies and the German 11th Army, begin full-scale attacks.