about midnight
I had gone to bed as usual in the empty building , taking in my drawbridge and closing both windows behind me . The northwest wind had died away at sundown , and the night was still and the sky becoming cloudy . I looked for an east wind the next day and probably snow later . What hour I woke up I knew not , but it must have been about midnight . I know I awoke gradually , because I had a long dream before doing so . I thought a giant was shouting at me from a grove of green trees on a hillside ; it kept up for a long time , deep , hoarse shouts which fairly shook the earth ; I could not see him , but seemed to know what he was . I was not frightened , but stood in a meadow listening .