Quoting from still another Greek authority, that of Handbook to the Grammar of the Greek Testament, by Samuel G. Green, D.D. (Revision of 1912 edition), on pages 248, 249, under katá, it says: “β. With the Accusative. . . . 4. Of place or time, distributively, from one to another. Mark xiii.8: seismoì katà tópous, earthquakes in diverse places. Luke viii.1: diódeue katà pólin, he was journeying from city to city. So kat’ étos year by year, Luke ii.41; kat’ oíkon, at different houses, Acts ii.46, v. 42; katà pan sábbaton, every Sabbath, Acts xv.21;” and so forth.
The Watchtower Announcing Jehovah’s Kingdom. August 15, 1961 p. 503