After the 1972 election of the third Labour government under Prime Minister Norman Kirk, it was announced that from 1974, Waitangi Day would be a national holiday known as New Zealand Day. The New Zealand Day Act legislation was passed in 1973. For Kirk, the change was simply an acceptance that New Zealand was ready to move towards a broader concept of nationhood. Diplomatic posts had for some years marked the day, and it seemed timely in view of the country's increasing role on the international stage that the national day be known as New Zealand Day. At the 1974 commemorations, the Flag of New Zealand was flown for the first time at the top of the flagstaff at Waitangi, rather than the Union Flag, and a replica of the flag of the United Tribes of New Zealand was also flown.