With phone enquiry lines busy, passengers were stranded at stations. “I was trying to know my train’s changed schedule but the lines were busy. I had to come to the station to find out,” said Jyotsna Krishnan, a passenger at the New Delhi Railway Station.

Another traveller Gaurav Gupta had a ‘harrowing’ time at the Nizamuddin Railway Station. “I have been waiting for the August Kranti Rajdhani Express to Mumbai. After I reached the station, I came to know it would leave three hours later,” said Gupta, a banker in Mumbai, who had come to visit his family in Dwarka.

The trains cancelled on Sunday include the New Delhi-Agra Express, Mahabodhi Express, Kaifiyat Express, Delhi-Sultanpur Express, Delhi-Darbhanga Express and Mahananda Express.

Rewa Express, Farraka Express, Katihar-Amritsar Express, Bareilly-Allahabad Express and Jhansi-Lucknow Express have been cancelled till January 31.

Nearly 70 trains have been running late for one week due to dense fog across north India.