Mother's Day is observed on the second Sunday of May every year, shaping retail and hospitality trade for the week either side of it. 17 May 2026 falls inside the same 31-day month, ten months into the financial year that began the previous July and two months short of its 30 June close.
Sunday 17 May 2026 is a weekend day under the standard Monday-to-Friday working pattern and does not count toward the working-day total shown above, the last day of the weekend before the working week resumes on Monday morning across most Australian workplaces and schools.
Contracts and legal deadlines that specify calendar days count every day from 17 May 2026 including weekends and public holidays, while deadlines specified in working or business days count only the days this page includes in its working-day total. The difference between the two conventions can shift a deadline by several days once weekends and holidays are counted.
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