The Papua New Guinea parliament will meet on April the 20th to try to choose a new governor-general after two elections last year were annulled by the Supreme Court.
The announcement was made after a special cabinet meeting and comes as the the prime minister had adjourned the house in January for five months.
The grace period for the government not to have to face a no-confidence motion expired in February and observers say the sitting could be a test for the administration of Sir Michael Somare.
Last week, the Supreme court annulled the election of Sir Pato Kakaraya despite an official having travelled to London for the Queen to sign his appointment.
Sir Pato's election was challenged by Sir Albert Kipalan who had earlier been chosen in an election also ruled unlawful.