Finland. Soviet shelling of Finnish defensive positions on the Karelian Isthmus continues, with increasing intensity. Fort Poppius and Million Fort in the Lähde sector near Summa are badly damaged by the bombardment, leading to defensive weakness in the Mannerheim Line. On the North shore of Lake Lagoda, Finns destroy the Pieni-Kelivaara motti in one day, capturing 2 field guns, 2 antitank guns, 9 mortars, 9 machineguns and 100 rifles. Dug in Soviet troops in the nearby West Lemetti motti resist a similar attack, leading to new tactics to gradually reduce mottis.
German submarines sink 2 neutral Greek ships. At 2.52 AM 100 miles West of Brest, steam merchant SS Eleni Stathatou is hit but not sunk by a torpedo from U-34. Having only one torpedo left, U-34 waits for Eleni Stathatou to sink. When she starts moving again, U-34 sinks her at 4.21 with the last torpedo (12 lives lost).
At 8 PM 200 miles off Portugal, U-44 sinks coal carrier SS Flora with one torpedo (all 25 hands lost).