The objective of this repository is we have two scheduled plan (old and new) from this we need to find the cancelled period from the old plan. for eexample : As per the old plan we have schedule 10-05-2016 to 20-05-2016 and as per new plan schedule is 01-05-2016 to 05-05-2016. So from old and new plan we get the cancelletion period as 10-052016 to 20-05-2016.