Photos: Cold wave in Delhi December 21, 2021 by Press Trust of India New Delhi: Homeless people wearing woollen clothes bask in the sun on a cold winter morning, in New Delhi, Monday, Dec 20, 2021. A cold wave swept parts of Delhi on Monday with the minimum temperature at the Safdarjung Observatory dropping to 3.2 degrees Celsius (PTI Photo/Kamal Kishore) New Delhi: Homeless people wearing woollen clothes bask in the sun on a cold winter morning, in New Delhi, Monday, Dec 20, 2021. A cold wave swept parts of Delhi on Monday with the minimum temperature at the Safdarjung Observatory dropping to 3.2 degrees Celsius (PTI Photo/Kamal Kishore) New Delhi: Homeless people wearing woollen clothes bask in the sun on a cold winter morning, in New Delhi, Monday, Dec 20, 2021. A cold wave swept parts of Delhi on Monday with the minimum temperature at the Safdarjung Observatory dropping to 3.2 degrees Celsius (PTI Photo/Kamal Kishore) New Delhi: Passenger cover themselves from cold waves as they travel in a passenger train reaching New Delhi railway station, New Delhi, saturday, dec. 18, 2021. The India meteorological department (IMD) has forecasted cold wave in isolated pockets over Punjab till December 20 and over Haryana, Chandigarh, and north Rajasthan from December 18 to 20, 2021. (PTI Photo/Vijay Verma)