First Fleet
The First Fleet was commanded by Commodore Arthur Phillip, who was given instructions authorising him to make regulations and land grants in the colony. The ships arrived at Botany Bay between 18 and 20 January 1788; HMS "Supply" arrived on 18 January, "Alexander", "Scarborough" and "Friendship" arrived on 19 January, and the remaining ships on 20 January.
Western Australia Day
HMS "Challenger", under Captain Charles Fremantle, anchored off Garden Island on 25 April 1829. Fremantle officially claimed the western part of Australia for Britain on 2 May. The merchant vessel "Parmelia" – with the new colony's administrator Lieutenant-Governor James Stirling, other officials, and civilian settlers on board – arrived on the night of 31 May and sighted the coast on 1 June. It finally anchored in Cockburn Sound on 6 June. The warship HMS "Sulphur" arrived on 8 June, carrying the British Army garrison. The Swan River Colony was officially proclaimed by Stirling on 11 June.