Whale migration season runs along much of the eastern and western coastlines through May, one of the seasonal markers of the Australian mid-year. 30 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.
A public holiday landing on a Thursday sits one day short of the weekend, and workers commonly take the Friday after it as annual leave to turn a single day off into a four-day break. Thursday 30 May 2030 falls on this day of the week, one working day ahead of Friday and two ahead of the weekend that follows it.
A public holiday that falls on a Monday or a Friday produces a three-day weekend without using any annual leave, which is why long-weekend planning around 30 May 2030 depends on which day of the week the nearest public holiday falls on. A midweek holiday delivers no such automatic extension, though many workers bridge it with a single day of leave.