My best research places the first Bushball as being held on the 22nd of June, 1974. 44 years later there might have been a few less sideburns but otherwise it was the same deal - a bloody good party at Aspiring Hut. It’s the pinnacle of the club’s social calendar.
Bushball is usually held near the beginning of second semester. For more information check out the semester two Muesli Mag.