The Adelaide University Union coordinates the activities, events and entertainment for Adelaide University O'Week. O'Week is the week before lectures begin. During O'Week the Union coordinates a variety of events centering on activities, free stuff, entertainment, competitions and a huge area for clubs on the Math Lawns near the Union House and the Braggs building.
Taken from Wikipedia - https://en.wikipedia.org/wiki/Adelaide_University_Union - Accessed 20 December 2020