Summer begins on 1 December, and December carries the two biggest fixed public holidays of the year: Christmas Day on 25 December and Boxing Day on 26 December. 13 December 2026 falls inside this 31-day month, at the height of the Australian retail and travel calendar for the year.
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 13 December 2026 falls on this day of the week, at the close of the weekend, immediately before the working week resumes.
The working-day count on this page excludes both weekend days and any public holiday declared for the state selected, so the same date in 2026 can show a different total depending on which state's calendar applies to 13 December. Interstate businesses need to check more than one state's list before setting a national deadline.
Cookie policy