*Rescheduling of Train Service* Train No. 12840 Dr MGR Chennai Central – Howrah Superfast Mail scheduled to leave Dr MGR Chennai Central at 19.00 hrs on 20.05.2025 (Today) is rescheduled to leave Dr MGR Chennai Central at 11.00 hrs on 21.05.2025 (Tomorrow) due to late running of pairing train (Late by 16 hours)