Economy Delhi residents spend Christmas indoors as smog emergency reaches fourth day Updated : December 25, 2018 04:31 PM IST Senior officials predicted the severe pollution would last another three days due to unusually stagnant and cold air. They issued a three-day emergency response on Monday that included closing area factories and banning construction works. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.