Green’s Dictionary of Slang

(Aus./N.Z.) afternoon.

1924		Catholic Press (Sydney) 5 June 437/3: ‘What about that geography for this afto’. Do you know yours?’‘Not very well’.
1945		Baker Aus. Lang.
1955		N. Pulliam I Travelled a Lonely Land (1957) 229/2: afto – afternoon.
1964		R. Helmer Stag Party 103: Got another case comin’ in on the truck this afto.
1978		N. Hilliard Glory and The Dream 166: ‘Anybody seen Charlie?’ ‘In the rubbity this arfto.’.
1983		L. Mantell Murder to Burn 76: Forgot about it till we got your flier this afto.
2003		McGill Reed Dict. of N.Z. Sl.
2008		G. Dufour Lydian Hall 125: They were supposed to be going off to that riding school together again this afto.