http://homepage.ntlworld.com/andrew.etherington/month/thismonth/26.htm
November 26th, 1941
UNITED KINGDOM: The British government presents Finland an ultimatum. Finland has to cease all offensive military operations by 3 December or His Majesty’s Government shall declare war. (Mikko Härmeinen)
Submarine HMS Pompon laid down. (Dave Shirlaw)
FRANCE: Paris: A attack is made with a revolver on a German sentry post.
GERMANY:
U-529 laid down.
U-174 commissioned.
Anti-Comintern Pact of Nov. 25, 1936, renewed for five years by Germany, Japan, Italy, Hungary, Spain, Manchukuo, Bulgaria, Croatia, Denmark, Finland, Rumania, Slovakia, and Nanking regime in China.(Dave Shirlaw)
NORTH AFRICA: After two days of German attacks around Capuzzo and Sisi Aziz, Rommel recognizes the gathering of British Armour at Sidi Rezegh and the continued movement of the New Zealand Division toward Tobruk. He begins moving his forces back there.
General Cuningham is relieved of command of the British 8th Army. General Ritchie takes over.
JAPAN: Japanese military leaders confer on Formosa to complete plans for the invasion of the Philippines. (Marc Small)
The Japanese naval carrier forces bound for Pearl Harbor sail.
COMMONWEALTH OF THE PHILIPPINES: 34th Pursuit moves from Nichols to Del Carmen. (Marc Small)
Brereton returns to Clark AAF from his tour of Australian sites. (Marc James Small)
CANADA:
Corvettes HMCS Halifax and Weyburn commissioned.
Minesweeper HMCS Miramichi commissioned. (Dave Shirlaw)
U.S.A.: 11 pm (9:00 am Washington time) Stimson called Roosevelt to draw his attention to an intelligence report that the Japanese had sent five divisions by sea from Formosa to the south.
Marshall stated at a conference that war could be expected by March.
Navy Department advises Hart that war is impending.
Cordell Hull replies to Japanese proposal Plan B with an American counter-proposal.
Destroyer USS Killen laid down. (Dave Shirlaw)
Units of the 36th division, en route to the far east, were two days out from Pearl on Nov. 26 when the ship went on blackout and radio silence and the troops were told to expect a Japanese attack at any time.
After departing Hawaii, the convoy was routed south to Australia instead of west, so that it would not run into the approaching Japanese fleet.
Given the posts you’ve supplied, I don’t understand how anyone could say with a straight face that the high command was not aware that an attack on Pearl Harbor was imminent.