six o'clock
See , up above is the sign of my departure . '' Out of a little bank of white , fleecy clouds which hung down , here and there , from the blue sky , came the _ Black Dragon _ , her engines purring softly , her movements slow and graceful . Both men watched her for a moment in silence . `` At six o'clock to-morrow morning I start , '' Prince Shan announced . `` My pilot tells me that the weather conditions are wonderful , all the way from here to Pekin . We shall be there on Wednesday . '' `` You travel alone ? ''