The event on Thursday morning included the Illawarra Union Singers performing two peace songs.

"One minute's silence was also held after ringing the Peace bell, to remember those who died and to reiterate our call of "Hiroshima Never Again!"," Wollongong Hiroshima Day Committee spokeswoman Dr Margaret Perrott said.

On August 6, 1945, at a few minutes after 8am, the United States dropped an atomic bomb on the city of Hiroshima, Japan.

The bomb was known as "Little Boy", and exploded with about 13 kilotons of force. At the time of the bombing, Hiroshima was home to 280,000-290,000 civilians as well as 43,000 soldiers.

Read more: Wollongong event to mark 75th Hiroshima bombing anniversary

Between 90,000 and 166,000 people are believed to have died from the bomb in the four-month period following the explosion.

The US Department of Energy has estimated that after five years there were perhaps 200,000 or more fatalities as a result of the bombing, while the city of Hiroshima has estimated that 237,000 people were killed directly or indirectly by the bomb's effects, including burns, radiation sickness, and cancer.

"We could not let this anniversary pass without remembering this terrible event which ushered in the nuclear arms age," Dr Perrott said.

We depend on subscription revenue to support our journalism. If you are able, please subscribe here. If you are already a subscriber, thank you for your support.