The event was attended by Japan's Ambassador to PNG Morio Matsumoto, representatives from other embassies including Australia and the United States, Japanese people living in PNG and other stakeholders.
Akihito is the reigning Emperor of Japan, the 125th Emperor of his line according to Japan traditional order of succession.
Mr Matsumoto said at this age, Emperor Akihito remained actively dedicated to his official duties.
He spoke about the good relationship between PNG and Japan and how both countries had agreed on further strengthening of bilateral cooperation.
