Delhi Airport's fourth runway will have CAT III instrument landing system by Jan 26. The reopening of runway 28/10, which is in a better visibility area, has been further delayed. During flight restrictions, Delhi Airport will have only one CAT III runway, causing potential delays in case of dense fog.
source https://timesofindia.indiatimes.com/india/igias-main-runway-reopening-delayed-dial-aims-for-2-cat-iii-runways-by-jan-26/articleshow/107017379.cms
source https://timesofindia.indiatimes.com/india/igias-main-runway-reopening-delayed-dial-aims-for-2-cat-iii-runways-by-jan-26/articleshow/107017379.cms