The school year ends for most students partway through December, handing over to the long summer holidays that run through January and into February of the following year. 22 December 2028 falls inside this end-of-year school stretch, the longest holiday period on the Australian school calendar.
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 22 December 2028 falls on this day of the week, the last working day of its standard Monday-to-Friday week before the weekend begins.
2028 has 366 days on the calendar. Leap years add a single extra day to February, giving those years 366 days instead of 365 and shifting the day-of-year number for every date from March onward by one compared with an ordinary year. This is the only irregularity in the length of the Australian calendar year.