Norfolk Island is the only non-mainland Australian territory to have achieved self-governance. The Norfolk Island Act , passed by the Parliament of Australia in 1979, is the Act under which the island is governed. The Australian Government maintains authority on the island through an Administrator (currently Owen Walsh), who is appointed by the Governor-General of Australia. A Legislative Assembly is elected by popular vote for a term of not more than three years, although legislation passed by the Australian Parliament can extend its laws to the territory at will, including the power to override any laws made by the Norfolk Island Legislative Assembly.The Assembly consists of nine seats, with electors casting nine equal votes, of which no more than four can be given to any individual candidate. It is a method of voting called a "weighted first past the post system". Four of the members of the Assembly form the Executive Council, which devises policy and acts as an advisory body to the Administrator. The current Chief Minister of Norfolk Island is David Buffett. Other ministers are Minister for Tourism, Industry and Development, Minister for Finance and Attorney-General and Minister for Community Services. All seats are held by independent candidates. Norfolk Island has yet to embrace party politics. In 2007 a branch of the Australian Labor Party was formed on Norfolk Island, with the aim of reforming the system of government. Residents of Norfolk Island are entitled to enrol in a mainland Australian division in a state to which they have a connection, or the Division of Canberra in the ACT, or for the Division of Solomon in the NT. Enrolment for Norfolk Islanders is not compulsory, but once enrolled they must vote.26 - The island's official capital is Kingston; it is, however, more a centre of government than a sizeable settlement. The largest settlement is at Burnt Pine. The most important local holiday is Bounty Day, celebrated on 8 June, in memory of the arrival of the Pitcairn Islanders in 1856. Local ordinances and acts apply on the island, where most laws are based on the Australian legal system. Australian common law applies when not covered by either Australian or Norfolk Island law. Suffrage is universal at age eighteen. As a territory of Australia, Norfolk Island does not have diplomatic representation abroad, or within the territory, and is also not a participant in any international organisations, other than sporting organisations. The flag is three vertical bands of green (hoist side), white, and green with a large green Norfolk Island pine tree centered in the slightly wider white band.