Shatabdi Exp - janam-janam ka saath hai, agle shatabdi tak - Ananya D'Souza

Guys I booked ticket from LDH to BCT in dec month and on ticket instead of boarding time its written new time table from 1/10/2015 .......now wt if its time will change 23:50 to after 12 am.....
Now my point is I booked ticket like example :- I booked for 10 dec 23:50 if time of dep changes to after 12 then date will change to 11dec ......so what will be my date of journey. ...?
Please help me guys ...

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