six o'clock
`` Neither have I , '' was Grace 's quick response . `` It 's only half-past three . We 'll have plenty of time to go there and back before dinner . The boys wo n't be here until six o'clock . You know that Tom Gray arrived yesterday , I suppose ? That makes the Eight Originals complete . We 'll have to do without the Plus Two , because Miriam has n't come home yet and Arnold wo n't be here until the night before Nora 's wedding . ''