but how is it possible 12051 departs mumbai in the morning and returns in the night as 12052 and again leaves in the morning as 12051. So technically start and end station is mumbai for 12051/12052. And 12071 departs aurangabad in the morning and returns in the night as 12072 and again leaves in the morning as 12071. So technically start and end station is aurangabad for 12071/12072. There is only one rake which goes to and fro. One on cstm-mao js and other on dr-awb js.