Today marks 40 years since the Erebus air crash happened.
There were 257 people who died when an Air New Zealand plane crashed into Mount Erebus in 1979.
At 1.00pm, a public memorial event will be held at the Erebus Crew Memorial Garden at Auckland Airport, where there will be a release of butterflies.
A private event will be held later at Wellington's Government House with family, the Prime Minister and the Governor General in attendance.
There will be a minute's silence marked at 1.49pm, which is the time of impact, at both ceremonies here in New Zealand.