September is the third and final month of the financial year's first quarter, which runs from July to September. 17 September 2029 falls a quarter of the way through the financial year that began the previous July, in the third calendar quarter of 2029 under the standard January-to-December system used across most business reporting.
The week containing Monday 17 September 2029 is counted from this date under the standard week-numbering convention used on this page, with weeks running Monday to Sunday rather than Sunday to Saturday. This convention affects rostering, payroll cycles and any planning done in weekly blocks across Australian workplaces that pay staff or schedule shifts on a weekly basis.
A public holiday that falls on a Monday or a Friday produces a three-day weekend without using any annual leave, which is why long-weekend planning around 17 September 2029 depends on which day of the week the nearest public holiday falls on. A midweek holiday delivers no such automatic extension, though many workers bridge it with a single day of leave.