Earlier quoted context omitted.
No, it really isn't, and it's mildly obnoxious to people living in the southern hemisphere (or the tropics, for that matter) when people assume spring = Q2. Mildly because we're used to it, but it's not hard to avoid. And for better or worse, the Gregorian calendar is the universal civil system now, even in the countries like Saudi Arabia that notionally use other calendars. Even Korean Juche years, Japanese imperial…
All the people who live in the southern hemisphere live in the tropics or subtropics. Spring has no more meaning in Melbourne than it does in Mexico City.
https://plantmaps.com/koppen-climate-classification-map-aust...