When does Mafatu reach the island

In Call it Courage, Mafatu and his mother first reach land by being washed ashore by the terrible storm. Mafatu believes that the sea god is watching over them and taking them to shore while this is happening. Mafatu's mother is dying, but has one last bit of courage and energy left to pull them both ashore and press a coconut to her boy's mouth to feed him before she dies.