Whale migration season runs along much of the eastern and western coastlines through May, one of the seasonal markers of the Australian mid-year. 21 May 2030 falls inside this stretch, as days continue shortening ahead of the winter solstice the following month and the ski season's opening in the Snowy Mountains and Victorian Alps not far behind it.
Tuesday 21 May 2030 carries no recurring public holiday of its own outside the first Tuesday of November, when the Melbourne Cup applies in metropolitan Melbourne. On every other date, this day of the week runs as a standard working day across the country, counted fully in the working-day total above.
Contracts and legal deadlines that specify calendar days count every day from 21 May 2030 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.