Summer officially begins on 1 December, and by 7 December 2030 the country runs its hottest, longest-daylight stretch of the year. December closes 2030 in the fourth calendar quarter, the final quarter under the standard January-to-December system used on this page.
Sport fixtures, markets and family events across Australia are concentrated on Saturdays more than any other day of the week. 7 December 2030 falls on Saturday, outside the standard working-day count used on this page, between the working week that ends on Friday and the one that begins the following Monday.
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 2030 can show a different total depending on which state's calendar applies to 7 December. Interstate businesses need to check more than one state's list before setting a national deadline.