Japanese South Seas Force Transport Fleet ships crossed the Equator en route to Rabaul, New Britain at 0500 hours; it was the first Japanese Army force to cross the Equator in history. At 1214 hours, coast watchers at Tabar north of Rabaul spotted 20 Japanese Zero fighters; 109 carrier aircraft reached Rabaul at 1248 hours, destroying 5 of the 8 remaining Wirraway fighters at Rabaul. Shortly after, 27 Type 97 aircraft of carrier Kaga and a number of Type 99 aircraft from carrier Shokaku and Zuikaku attacked, sinking Norwegian freighter Herstein and coal hulk Westralia, losing only one aircraft in combat (a Type 97 piloted by Petty Officer 1st Class Tatsuya Sugihara) and two during recovery. No. 24 Squadron RAAF was effectively wiped out after the attacks on Rabaul on this day.
