MikeAqua:
I couldn't personally think of a worse time of year for a public holiday in NZ, than the depths of winter. Good timing for the skiers, perhaps. Maori must have been tough, to be up at dawn in winter in the traditional clothing. It would have been colder back then, too. I feel cold just thinking about it.
It's during the same season as the New Year holidays in the Northern Hemisphere. Northern Hemisphere holidays transplanted to the Southern Hemisphere are all backwards compared to their origin.