New Delhi, Dec 17 (ANI): The operation of some flights and trains were affected in the national capital on Wednesday, as the visibility was reduced to 700 meters due to fog. According to Northern Railway around 14 Delhi bound trains including Mahananda express, Lichchavi expresss, Purushottam express and Mahabodhi express are reported to be running late due to foggy weather condition. Due to late arrivals of trains the Railway had to re-schedule the departure time of some trains.