six o’clock
`` Soon be time to go , '' he thought to himself , and resumed his work . How strangely silent the place seemed ! Not a footstep to be heard or the sound of a human voice . He looked at his watch again , and saw that it was six o'clock , not five , or so the thing said . But that was impossible , for the Museum shut at five ; evidently the desert sand had got into the works . The room in which he stood was that known as Room I , and he had noticed that its Arab custodian often frequented Room K or the gallery outside . He would find him and ask what was the real time .