Whanganui iwi will be celebrating the anniversary of their 1995 occupation of Pakaitore/Moutoa Gardens on Sunday.
The day will mark 21 years since they walked on to the land and set up camp for 79 days.
Kaumatua John Maihi said it would begin with karakia at the Whanganui River at 5am, and continue into the early evening.
Elders wanted the day to focus on the tribe's land claims. The Waitangi Tribunal report on the claims was launched in October last year.
In the area around Mount Ruapehu, the Ngati Rangi iwi is already negotiating with Government. Other parts of the large Whanganui region are working towards a mandate to represent their people.
There would likely be music as well as claims korero on Sunday, Mr Maihi said.