The official Mt Buller opening date for the 2015 winter season is Friday 6 June.
Before 6th June, visitors can enjoy tobogganing (assuming there is sufficient snow cover) or sightseeing on the mountain. On 6 June, the chairlifts open for skiers and snowboarders.
Chairlifts start operating at 8.15am with the last ride at 4.45pm. The full ist of chairlifts and their respective operating hours is available here.