two o'clock
There was no carpet on the floor , no windows in the walls . The only light came from the door , and from a small skylight in the sloping roof , which showed that it was a garret-room . Nor did much light come from the open door , for there was no window on the walled stair to which it opened ; only opposite the door a few steps led up into another garret , larger , but with a lower roof , unceiled , and perforated with two or three holes , the panes of glass filling which were no larger than the small blue slates which covered the roof : from these panes a little dim brown light tumbled into the room where the boy sat on the floor , with his head almost between his knees , thinking . But there was less light than usual in the room now , though it was only half-past two o'clock , and the sun would not set for more than half-an-hour yet ; for if Robert had lifted his head and looked up , it would have been at , not through , the skylight . No sky was to be seen . A thick covering of snow lay over the glass . A partial thaw , followed by frost , had fixed it there -- a mass of imperfect cells and confused crystals .