New South Wales: Polity Style: 1788-1901

26 Jan 1788 part of Australia known as the territory of New South Wales is declared a possession of the King of Great Britain after the arrival and landing of the troops assigned to establish a penal colony at Sydney Cove (New South Wales Historical Records, 2:543; Governor Phillip's Voyage, p. 58)
7 Feb 1788 New South Wales is placed under the administration of a Governor-in-Chief, in accordance with a commission issued by command of the King of Great Britain on 2 Apr 1787 which was read and published at Sydney Cove on 7 Feb 1788 (New South Wales Historical Records, 2:393, 2:399; Governor Philip's Voyage, p. 64)
7 Feb 1788 - 31 Dec 1900 Territory of New South Wales : Colony of New South Wales
1 Jan 1901 the Colony of New South Wales constitutes an original state of the Commonwealth of Australia on 1 Jan 1901, the date appointed by a royal proclamation of 17 Sep 1900, issued under an act passed by the Parliament of the United Kingdom (House of Commons on 25 Jun 1900, House of Lords on 5 Jul 1900, received royal assent on 9 Jul 1900) (Public General Acts, 1900, pp. 24-45; Australia Government Gazette, No. 1, 1 Jan 1901, p. 1) [1]
  1. Full title: An Act to constitute the Commonwealth of Australia (may be cited as the Commonwealth of Australia Constitution Act).