Over Finland… Some 600 Soviet bombers attack Helsinki between 1800 and 0600 the following morning. Fires begun by the raid are visible for 400 km. Only three bombers are lost.

On the Eastern Front… In the north, Soviet forces capture Porkhov, east of Dno.

In the Bismark Archipelago… Allied aircraft raid Rabaul, on New Britain, destroying Japanese munitions dumps.

In British Guiana… The source of the Orinoco River is discovered by the crew of a USAAF plane in a mountainous gorge near the Brazilian-Venezuelan border.

In Occupied France… French resistance members attack the SOMUA armor plate works at Lyons. Over 30 of the plastic explosive charges planted fail to detonate.