On the south-west of the continent, the Nyoongar annual cycle is marked by six seasons, which includes two summers.
The seasons are not marked by a particular date, but instead people observe changes in the natural environment such as the wind, the blooming of banksias and gum trees and the migration of animals.
The cycle begins in mid-February, and is marked by the special event where Yokalar (Pleiades constellation) appears in the north side.
The season of Djeran is experienced over April and May (autumn), during this season the local Nyoongar people observe the daily dew point. This determines the best time to burn.
The others are Birak (first summer during December to January), Bunuru (second summer during February to March), Makuru (winter during June to July), Djilba (first spring August to September) and Kambarang (second spring during the months of October to November).
Nyoongar Boodja country covers the entire south-western portion of Western Australia, approximately from Jurien Bay to Esperance and everywhere west.
It's one of the largest Aboriginal cultural areas in Australia.