Queensland, Western Australia and the Northern Territory do not observe daylight saving, so from October onward those three run an hour behind the south-eastern states. 9 October 2026 falls inside this seasonal clock split, which lasts until the following April when the south-east moves back onto standard time.
A public holiday on a Friday pairs directly with the Saturday and Sunday that follow it, producing one of the two most common three-day-weekend patterns on the Australian calendar. Friday 9 October 2026 falls on this day of the week, the last working day of its standard Monday-to-Friday week before the weekend begins.
The week number shown for 9 October 2026 counts full weeks from the start of 2026, a figure used in payroll cycles, rostering and any planning done in weekly or fortnightly blocks rather than by calendar month. Businesses running fortnightly pay runs rely on this figure to track which of the two alternating pay weeks a date falls in.