King's Birthday falls on the second Monday of June in New South Wales, Victoria, South Australia, Tasmania, the Northern Territory and the ACT. Western Australia and Queensland do not observe the holiday on this date, so 30 June 2027 carries the public holiday in six jurisdictions and not in the other two, one of the clearest state-by-state splits on the calendar.
Meetings, project check-ins and mid-week deadlines cluster on Wednesday in most Australian workplaces running a standard five-day week. 30 June 2027 falls on this day, three working days into its week and two working days from the weekend, a common point for reviewing progress against weekly targets before the final push toward Friday.
Contracts and legal deadlines that specify calendar days count every day from 30 June 2027 including weekends and public holidays, while deadlines specified in working or business days count only the days this page includes in its working-day total. The difference between the two conventions can shift a deadline by several days once weekends and holidays are counted.