Summer officially begins on 1 December, and by 1 December 2027 the country runs its hottest, longest-daylight stretch of the year. December closes 2027 in the fourth calendar quarter, the final quarter under the standard January-to-December system used on this page.
A public holiday landing on a Wednesday sits in the middle of its working week rather than beside a weekend, so it does not create a long weekend on its own. Wednesday 1 December 2027 falls on this day of the week, at the working week's midpoint, three working days deep into the week.
2027 has 365 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.