International Astronautical Congress 2017
The 68th International Astronautical Congress 2017 will be held in Adelaide, Australia from 25th to 29th September 2017.
Every year, the International Astronautical Federation together with the International Academy of Astronautics and the International Institute of Space Law (IISL), holds the International Astronautical Congress (IAC) which is hosted by one of the national society members of the IAF.
They are an annual meeting of the actors in the discipline of space, and are generally held in late September or early October. They consist of plenary sessions, lectures and meetings. The IAC is attended by the agency heads and senior executives of the world's space agencies.
Incidentally, the 39th IAC was held in Bangalore, from October 8–15, 1988.