about eleven o’clock
Now they grew quite distant , and I heard no more than a phantom of sound ; now they came near , passed over my head , and faded again into the distance . The moon 's clear rays invited me to clear up the mystery . I sprang from my bed , and ran in my nightshirt to open the window . It was about eleven o'clock . Together the keen night-air and the moonlight wrapped me round , thrilling me with delight . The large courtyard lay deserted with its leafless poplars and spiked railings . Here and there a grain of sand sparkled .