Western Australia marks King's Birthday on the last Monday of September, months after every other state observes the same public holiday name. 1 September 2030 carries this public holiday only in Western Australia, with the rest of the country working through an ordinary day under a completely different holiday calendar for the same occasion.
A public holiday that falls on a Sunday sits inside the weekend rather than beside it, and whether a substitute day off applies to the following Monday depends on the specific holiday and the state. Sunday 1 September 2030 falls on this day of the week, at the close of the weekend, immediately before the working week resumes.
The hours and minutes shown in the countdown to 1 September 2030 are calculated against the clock and time zone set on the device displaying this page, and the countdown reaches zero at midnight local to that device. Two people in different time zones will see slightly different figures at the exact same moment, each reflecting their own local midnight.