Father's Day is observed on the first Sunday of September every year, shaping retail trade for the week either side of it. 14 September 2027 falls inside the same 30-day month as this observance, in the first month of the Australian spring, as warmer weather returns across the southern half of the country.
Shift rosters in retail, hospitality, healthcare and emergency services regularly schedule staff on Tuesdays as part of rotating patterns that do not follow the standard Monday-to-Friday week. Tuesday 14 September 2027 falls within this rostering system for shift-based industries, separate from the standard working-day count above that assumes a five-day week.
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 2027 can show a different total depending on which state's calendar applies to 14 September. Interstate businesses need to check more than one state's list before setting a national deadline.