Previous NACAAs
National astronomy conferences have been held all over Australia since 1967. The first conference actually titled "NACAA" was held in 1972. The conference name was coined by the late John Perdrix (ASV, ASWA), and is pronounced with a hard "C" to rhyme with "backer".
| Year | City | Hosts |
| 2010 | Canberra | Canberra Astronomical Society |
| 2008 | Penrith | NACAA Inc |
| 2006 | Frankston | Mornington Peninsula Astronomical Society |
| 2004 | Hobart | Astronomical Society of Tasmania |
| 2002 | Adelaide | Astronomical Society of South Australia |
| 2000 | Perth | Astronomy WA |
| 1998 | Sutherland | Sutherland Astronomical Society |
| 1996 | Brisbane | Astronomical Association of Queensland, Southern Astronomical Society, Brisbane Astronomical Society, Southeast Queensland Astronomical Society |
| 1994 | Canberra | Canberra Astronomical Society |
| 1992 | Adelaide | Astronomical Society of South Australia |
| 1990 | Frankston | Astronomical Society of Frankston, Astronomical Society of Victoria |
| 1988 | Sydney | Astronomical Society of New South Wales, British Astronomical Association (NSW Branch), Sutherland Astronomical Society |
| 1986 | Hobart | Astronomical Society of Tasmania |
| 1984 | Perth | Astronomical Society of Western Australia |
| 1982 | Brisbane | Astronomical Association of Queensland |
| 1980 | Geelong | Astronomical Society of Geelong |
| 1978 | Canberra | Canberra Astronomical Society |
| 1976 | Sydney | Astronomical Society of New South Wales |
| 1974 | Adelaide | Astronomical Society of South Australia |
| 1972 | Melbourne | Astronomical Society of Victoria |
| 1970 | Wollongong | Illawarra Astronomical Society |
| 1969 | Ballarat | Ballaarat Astronomical Society |
| 1968 | Port Macquarie | Port Macquarie Astronomical Association |
| 1967 | Canberra | James Cook Astronomers Club, Pacific Astronomical Society |