A landmark chapter for the Indian Railways is set to begin on January 17, when Prime Minister Narendra Modi flags off the nation's very first Vande Bharat Sleeper trains from Malda in West Bengal. This state-of-the-art service is designed as an overnight link connecting Howrah, near Kolkata, with Kamakhya Junction in Guwahati, establishing a high-speed rail connection between West Bengal and Assam, both of which are currently poll-bound states. The debut route of this premier service will cover a distance of approximately 1,000 km. Passengers can expect to complete the journey between Kolkata and Guwahati in roughly 14 hours. NDTV's Ratnadip Choudhury brings you the details.