Delhi , officially the National Capital Territory of Delhi, is the capital territory of India. Delhi is historically and culturally connected to both the Upper Doab of the Yamuna-Ganges river system and the Punjab region. It is bordered by Haryana on three sides and by Uttar Pradesh to the east. It is the largest city in India in terms of geographical area – about 1,484 square kilometres (573 sq mi). It has a population of about 16.3 million, making it the second most populouscity and second most populous urban agglomeration in India and 3rd largest urban area in the world. Such is the nature of urban expansion in Delhi that its growth has expanded beyond the NCT to incorporate towns in neighbouring states and at its largest extent can count a population of about 25 million residents as of 2014.
Delhi has been continuously inhabited since the 6th century BC. Through most of its history, Delhi has served as a capital of various kingdoms and empires. It has been captured, ransacked and rebuilt several times, particularly during the medieval period, and modern Delhi is a cluster of a number of cities spread across the metropolitan region.
The NCT and its urban region have been given the special status of National Capital Region (NCR) under the Constitution of India’s ‘s 69th Amendment Act of 1991. The NCR includes the neighbouring cities of Faridabad, Gurgaon, Noida, Ghaziabad, Neharpar (Greater Faridabad), Greater Noida, Bahadurgarh, Sonepat , Panipat, Karnal, Rohtak, Bhiwani, Rewari, Baghpat , Meerut, Muzaffarnagar, Alwar, Bharatpur and other nearby towns. A union territory, the political administration of the NCT of Delhi today more closely resembles that of a state of India, with its own legislature, high court and an executive council of ministers headed by a Chief Minister. New Delhi is jointly administered by the federal government of India and the local government of Delhi, and is the capital of the NCT of Delhi.
Source : Wikipedia
Delhi has an extreme climate. It is very hot in summer (April – July) and cold in winter (December – January). The average temperature can vary from 25oC to 45oC during the summer and 25oC to 5oC during the winter.
Winter : December To January ( 50 to 250 )
Spring : February to March ( 200 to 250 )
Summer : April to June (250 to 450)
Monsoon : July to Mid September (300 to 350)
Autumn : September end to November (200 to 300)
Best time to visit : February to April and September to November
Indira Gandhi International Airport is the primary international airport of the National Capital Region of Delhi, India, situated in Palam, 15 km south-west of the New Delhi railway station and 16 km from New Delhi city centre.
The New Delhi Railway Station (station code NDLS), is the main railway station in Delhi.