six o'clock
demanded Nora , from the porch swing . `` You ca n't have your dinner yet . It 's only four o'clock . When you 're invited to six o'clock dinner you must n't arrive two hours beforehand . Did n't you know that ? '' This wifely counsel was accompanied by a teasing smile that belied its harshness . `` Do n't pay any attention to her , Hippy , '' called Grace mischievously .