six o'clock
Grace looked worried . `` We must n't stay at Vinton 's later than half-past seven o'clock . There are so many little things to be attended to , as well as the important question of our room . '' Arriving at Vinton 's at exactly half-past six o'clock , they found Arline Thayer and Ruth Denton waiting for them at a table on which were covers laid for six . `` We 've been waiting for ages ! '' exclaimed Arline . `` But you said half-past six , and it is only one minute past that now , '' reminded Grace , showing Arline her watch .