eight o'clock
And now I suppose you 'll be saying I ought to go to bed ! '' `` Rosemary ? '' said Doctor Hugh . `` Sarah is supposed to go to bed at eight o'clock , '' announced Rosemary reluctantly . `` She used to argue with Mother nearly every night . No one ever wants to go to bed early , Hugh , and lots of the girls stay up till ten . '' `` Then I 'm sorry for lots of girls , '' rejoined the doctor .