To go from Coimbatore to Howrah on Oct 20th, I booked by 12676 kovai exp (cbe 14:20 - mas 21:45) from cbe to chennai and by 12840 chennai-howrah mail same night (23:40). But timings of kovai exp is changed in new TT (cbe 14:55 - mas 22:25). Now I had to cancel the first ticket and book by West coast exp (cbe 06:35 - mas 14:40) to avoid risk.