If you live in Australia or New Zealand, celebrating Samhain in October means you are honoring the dead and the descent into winter while the physical world outside your window is bursting into spring life. It makes no energetic or practical sense.
The earth's seasons dictate the magical tides, not a calendar printed in the UK or the US. Up north, October brings frost and dying crops. Down here, October brings swooping magpies, jasmine blooms, and the start of the summer heat. That is Beltane.
If you want to work with the actual thinning of the veil, you have to wait for the land to go to sleep. Down under, that happens in late April into May. The leaves drop, the cold sets in, and the land goes dormant. That is when you set the ancestor altar. That is when you sit in silence and listen.
Working the inverted Southern Wheel of the Year isn't about being contrarian. It is about trusting the sky and the soil you actually live on, rather than pretending you live in 16th-century Scotland.