Australia has kept a version of the UTC atomic time scale since the 1990s, but Greenwich Mean Time (GMT) remained the formal basis for the standard times of all of the states until 2005.
Meskipun Australia telah mempertahankan versi waktu atom Coordinated Universal Time (UTC) sejak 1990-an, Greenwich Mean Time (GMT) masih menjadi dasar formal untuk waktu standar semua negara bagian hingga 2005.