It's ludicrous to have a public holiday that's tied to a sporting event, but it's even more ludicrous for the timing of that sporting event to be only known about six months ahead.
I populate our payroll system's list of public holidays on the first day of the year, for the whole year, and now I have to make a special exception and manually add the AFL Parade Day some time in April when it gets announced.
I'd rather not think about AFL at all.