He 111 bombers from various units of German Luftwaffe KG 4 (pathfinders), KG 53, and KG 55 were launched to attack US bombers at Poltava and Mirgorod (Myrhorod) Airfields in Ukraine; navigation errors led to all bombers attacking Poltava, starting from 2355 hours on the previous date into this date. 44 US B-17 bombers and 15 various other US and Soviet aircraft were destroyed; 26 US B-17 bombers were damaged. All German bombers returned to their bases safely.
