strike I 1. v. 3) бить (о часах); it has just struck four - только что пробило четыре; the hour has struck - пробил час, настало время; his hour has struck - его (смертный) час пробил...
be onto a good thing использовать благоприятную возможность The secret of his success as a businessman is that, he always knows when he's onto a good thing....