The AFL and NRL home-and-away seasons close out through August, with ladder positions for the finals series settled in the closing rounds. 17 August 2028 falls inside this final stretch of the regular season, ahead of the finals that begin the following month and run through to the grand finals in late September and early October.
Workplaces commonly schedule their heaviest meeting load on Thursday, leaving Friday clearer for closing out the week's remaining work. 17 August 2028 falls on this day, the fourth working day of its standard Monday-to-Friday week, with one working day remaining before the weekend begins and the count above resets for Monday.
2028 has 366 days on the calendar. Leap years add a single extra day to February, giving those years 366 days instead of 365 and shifting the day-of-year number for every date from March onward by one compared with an ordinary year. This is the only irregularity in the length of the Australian calendar year.