about twelve o'clock
And now go , I must make my toilet . '' `` Carmen , I have one more favor to ask of you . '' `` Well ? '' `` I must leave the house about twelve o'clock for one or more hours -- '' `` He lies , '' thought Carmen to herself . `` To do this , '' continued Larsagny , `` I must pretend some sudden sickness . You will have me brought to my room , and then -- '' `` Since when are the bankers and the money-brokers at night in their offices ? '' asked Carmen .