Delhi airport in the winter is a foggy mess, flights are delayed, passengers are stranded but one wonders what it is like for the pilot when visibility is nearly zero. A cockpit view of landing at Delhi airport during the winter fog is revelationary to say the least. What the pilot can see when visibility is 1000 metres or more is known as a CAT 1 condition. An aircraft landing when the fog is more dense, means a visibility limit of 350 metres or a CAT 2 condition.