eight o'clock
`` I am game , '' Arthur replied , `` but let us be off at once . What time do you think it is ? '' `` I have no idea . I do n't know how long we slept , but it was quite dark except for the fire , so it must certainly have been past eight o'clock . We set out half an hour later . I should say that it must be between twelve and one now , if not later . It will begin to get light again soon after four , so we have no time to lose . ''