Fall of Mozhaisk (night 19-20): Russian Guards and tank units capture town after house-to-house fighting. Germans retreating west towards Vyazma, harried at Borodino by Russian cavalry, ski troops and Ilyushin Stormovik aircraft.
Crimea: Germans recapture Feodosia.
Leningrad Front: 57°F of frost.
Atlantic: Canadian SS Lady Hawkins sunk by U-boat with heavy loss of life.