VSKP-SC is profitable,but one run might take 9 hrs.
So 18 hrs total run with 1 rake.If we add buffer time of 1 hr,19 hrs of run.
Instead of running with one rake,a rake can start as BZA-SC Shatabdi and another one from VSKP.When the BZA-SC Shatabdi reaches SC,it can be reversed as SC-VSKP Shatabdi.And the VSKP-SC Shatabdi can be reversed as SC-BZA Shatabdi.