one o'clock in the morning
`` The fact is , '' said he , `` this war is a nerve-racking business . I never dreamed I was so jumpy until I came home . I hate being by myself . I 've kept my poor devoted mother up till one o'clock in the morning . To-night she struck , small blame to her ; but , after five minutes on my lones , I felt as if I should go off my head . So I routed out the car and came along . But of course I did n't expect to see Betty .