Green’s Dictionary of Slang

(Aus.) to beg someone for food and drink; thus sundowning n.

1892		H. Nisbet Bushranger’s Sweetheart 279: Your days of sundowning and uncertainty are over at last.
1902		Bulletin (Sydney) 2 Aug. 35/1: Caddy and I were sundowning our way from Melbourne to Queenbeyan, where we hoped to find a friend who owned a gold-mine.
1907		W.H. Koebel Return of Joe 18: No more sundowning for me.