What time in Australia is it when 9.30am in Wall Street?

Wall Street is in the Eastern Time Zone (ET). When it is 9:30 AM ET, it is 11:30 PM AEDT (Australian Eastern Daylight Time) or 10:30 PM AEST (Australian Eastern Standard Time), depending on whether daylight saving time is in effect. Australia has multiple time zones, so the exact time can vary in other regions, such as 9:30 PM ACST (Australian Central Standard Time) or 8:30 PM AWST (Australian Western Standard Time).