ID #2457 When was Lae proclaimed capital of the territory of New Guinea? Trevor 05/06/2017 0 Comments On Saturday, August 23, 1941, the executive council of the administration met and the decision – delayed for almost 4 years – was made to move the seat of government from Rabaul to Lae. Lae was proclaimed capital of the territory on September 1941. Tags: Lae, Rabaul