No fixed national public holiday falls in May outside Queensland and the Northern Territory. 4 May 2030 sits between the ANZAC Day cluster in April and the King's Birthday long weekend that most states observe in June, in the middle of an otherwise unbroken run of working weeks across the majority of the country.
A public holiday that falls on a Saturday sits inside the weekend rather than beside it, so it does not automatically create a substitute day off during the working week; whether one applies depends on the specific holiday and the state. Saturday 4 May 2030 falls on this day of the week, inside the weekend itself.
Contracts and legal deadlines that specify calendar days count every day from 4 May 2030 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.