February is the only month whose length changes from year to year, running to 28 days in an ordinary year and 29 in a leap year. 2029 gives February 28 days, and 19 February 2029 falls inside that count, seven months into the financial year that began the previous July and within the first two months of the 365-day calendar year.
Monday 19 February 2029 is the first working day of its week. Any bill, deadline or rostered task set for the preceding Saturday or Sunday moves to this date under standard business-day rules, and the working-day count above treats it as day one of a fresh five-day working stretch that runs through to Friday, before the weekend resets the cycle again.
2029 has 365 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.