Harmony Week/Day

Gibu - week
Yaadha - day (from yaay, one of the words for 'sun' in Yuwaalaraay and Yuwaalaraay)

Winanga-y-la-waa-y-gu
The parts of this word are:
winanga-y   harmony/respect (y-class verb)
-la -             continuous
-waa-          moving
-y                future
-gu              for