I think if Coro starts the HWH departure will be around 12:30 PM for Coro to arrive Chennai central around 14:00 PM. Coro return departure would be leaving MAS around 06:35 am and arrive HWH around 07:00 am (PM at SRC), Railfans whats your opinion on it? The Coromandal that arrives MAS at 14:00 PM will leave as HWH mail around 19:00 and the train that arrives as Chennai mail around 03:00 will leave towards HWH around 06:30 am as coromandal.
PM maintanence at SRC (for hwh mail from night...
more... 23:00 to next day 12:00 ) and Another train from (Morning 08:30 am to night 23:55 PM )