đš Train No.12691 Dr MGR Chennai Central â Sai P Nilayam Weekly Superfast Express leaving Dr MGR Chennai Central at 23.30 hrs oÂn 07th April, 2023 will commence service from Chennai Beach at 23.30 hrs instead of Dr MGR Chennai Central. Additional stoppage will be provided at Perambur [(23.50 (Arr)/23.55(Dep)] for the convenience of passengers. đš Train No. 12691 MGR Chennai Central â Sri Sathya Sai Prasanthi Nilayam Weekly Superfast Express will start its journey from Chennai Beach instead of MGR Chennai Central oÂn April 14 & 21, 2023 with an additional stoppage at Perambur.